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Calibration of the NEVOD-EAS array for detection of extensive air
showers: In this paper we discuss the calibration of the NEVOD-EAS array which is a
part of the Experimental Complex NEVOD, as well as the results of studying the
response features of its scintillation detectors. We present the results of the
detectors... | astro-ph_IM |
The RATT PARROT: serendipitous discovery of a peculiarly scintillating
pulsar in MeerKAT imaging observations of the Great Saturn-Jupiter
Conjunction of 2020. I. Dynamic imaging and data analysis: We report on a radiopolarimetric observation of the Saturn-Jupiter Great
Conjunction of 2020 using the MeerKAT L-band s... | astro-ph_IM |
Enhanced models for stellar Doppler noise reveal hints of a 13-year
activity cycle of 55 Cancri: We consider the impact of Doppler noise models on the statistical robustness
of the exoplanetary radial-velocity fits. We show that the traditional model of
the Doppler noise with an additive jitter can generate large non... | astro-ph_IM |
Analysis of active optics correction for a large honeycomb mirror: In the development of space-based large telescope systems, having the
capability to perform active optics correction allows correcting wavefront
aberrations caused by thermal perturbations so as to achieve
diffraction-limited performance with relaxed st... | astro-ph_IM |
The Carnegie Astrometric Planet Search Program: We are undertaking an astrometric search for gas giant planets and brown
dwarfs orbiting nearby low mass dwarf stars with the 2.5-m du Pont telescope at
the Las Campanas Observatory in Chile. We have built two specialized
astrometric cameras, the Carnegie Astrometric Plan... | astro-ph_IM |
Unrolling PALM for sparse semi-blind source separation: Sparse Blind Source Separation (BSS) has become a well established tool for a
wide range of applications - for instance, in astrophysics and remote sensing.
Classical sparse BSS methods, such as the Proximal Alternating Linearized
Minimization (PALM) algorithm, ne... | astro-ph_IM |
Thermal control of long delay lines in a high-resolution astrophotonic
spectrograph: High-resolution astronomical spectroscopy carried out with a photonic Fourier
transform spectrograph (FTS) requires long asymmetrical optical delay lines
that can be dynamically tuned. For example, to achieve a spectral resolution of... | astro-ph_IM |
Characterization Of Inpaint Residuals In Interferometric Measurements of
the Epoch Of Reionization: Radio Frequency Interference (RFI) is one of the systematic challenges
preventing 21cm interferometric instruments from detecting the Epoch of
Reionization. To mitigate the effects of RFI on data analysis pipelines,
nu... | astro-ph_IM |
Analysis Methods for Gamma-ray Astronomy: The launch of the Fermi satellite in 2008, with its Large Area Telescope
(LAT) on board, has opened a new era for the study of gamma-ray sources at GeV
($10^9$ eV) energies. Similarly, the commissioning of the third generation of
imaging atmospheric Cherenkov telescopes (IACTs)... | astro-ph_IM |
Coherent Imaging with Photonic Lanterns: Photonic Lanterns (PLs) are tapered waveguides that gradually transition from
a multi-mode fiber geometry to a bundle of single-mode fibers (SMFs). They can
efficiently couple multi-mode telescope light into a multi-mode fiber entrance
at the focal plane and convert it into mult... | astro-ph_IM |
The ASTRO-H X-ray Astronomy Satellite: The joint JAXA/NASA ASTRO-H mission is the sixth in a series of highly
successful X-ray missions developed by the Institute of Space and Astronautical
Science (ISAS), with a planned launch in 2015. The ASTRO-H mission is equipped
with a suite of sensitive instruments with the high... | astro-ph_IM |
JUDE (Jayant's UVIT Data Explorer) Pipeline User Manual: We have written a reference manual to use JUDE (Jayant's UVIT data Explorer)
data pipeline software for processing and reducing the Ultraviolet Imaging
Telescope (UVIT) Level~1 data into event lists and images -- Level~2 data. The
JUDE pipeline is written in the ... | astro-ph_IM |
Reconstruction of Cherenkov radiation signals from extensive air showers
of cosmic rays using data of a wide field-of-view telescope: The operation of a wide field-of-view (WFOV) Cherenkov telescope is
described. The detection of extensive air showers (EAS) of cosmic rays (CR) is
based upon the coincidence with signa... | astro-ph_IM |
Technical Note: Asteroid Detection Demonstration from SkySat-3 B612 Data
using Synthetic Tracking: We report results from analyzing the B612 asteroid observation data taken by
the sCMOS cameras on board of Planet SkySat-3 using the synthetic tracking
technique. The analysis demonstrates the expected sensitivity impro... | astro-ph_IM |
AMEGO-X: MeV gamma-ray Astronomy in the Multimessenger Era: Recent detections of gravitational wave signals and neutrinos from gamma-ray
sources have ushered in the era of multi-messenger astronomy, while
highlighting the importance of gamma-ray observations for this emerging field.
AMEGO-X, the All-sky Medium Energy G... | astro-ph_IM |
Multi-Chroic Feed-Horn Coupled TES Polarimeters: Multi-chroic polarization sensitive detectors offer an avenue to increase
both the spectral coverage and sensitivity of instruments optimized for
observations of the cosmic-microwave background (CMB) or sub-mm sky. We report
on an effort to adapt the Truce Collaboration ... | astro-ph_IM |
AnisoCADO: a python package for analytically generating adaptive optics
point spread functions for the Extremely Large Telescope: AnisoCADO is a Python package for generating images of the point spread
function (PSF) for the european extremely large telescope (ELT). The code
allows the user to set many of the most im... | astro-ph_IM |
AstroDAbis: Annotations and Cross-Matches for Remote Catalogues: Astronomers are good at sharing data, but poorer at sharing knowledge.
Almost all astronomical data ends up in open archives, and access to these is
being simplified by the development of the global Virtual Observatory (VO).
This is a great advance, but... | astro-ph_IM |
Building models for extended radio sources: implications for Epoch of
Reionisation science: We test the hypothesis that limitations in the sky model used to calibrate an
interferometric radio telescope, where the model contains extended radio
sources, will generate bias in the Epoch of Reionisation (EoR) power spectr... | astro-ph_IM |
CAPTURE: A continuum imaging pipeline for the uGMRT: We present the first fully automated pipeline for making images from the
interferometric data obtained from the upgraded Giant Metrewave Radio Telescope
(uGMRT) called CAsa Pipeline-cum-Toolkit for Upgraded Giant Metrewave Radio
Telescope data REduction - CAPTURE. It... | astro-ph_IM |
Arm-Locking with the GRACE Follow-On Laser Ranging Interferometer: Arm-locking is a technique for stabilizing the frequency of a laser in an
inter-spacecraft interferometer by using the spacecraft separation as the
frequency reference. A candidate technique for future space-based gravitational
wave detectors such as th... | astro-ph_IM |
Correcting for Telluric Absorption: Methods, Case Studies, and Release
of the TelFit Code: Ground-based astronomical spectra are contaminated by the Earth's atmosphere
to varying degrees in all spectral regions. We present a Python code that can
accurately fit a model to the telluric absorption spectrum present in
as... | astro-ph_IM |
PandExo: A Community Tool for Transiting Exoplanet Science with JWST &
HST: As we approach the James Webb Space Telescope (JWST) era, several studies
have emerged that aim to: 1) characterize how the instruments will perform and
2) determine what atmospheric spectral features could theoretically be detected
using tra... | astro-ph_IM |
Differential HBT Method for Binary Stars: Two photon correlations are studied for a binary star system. It is
investigated how the differential Hanbury Brown and Twiss (HBT) approach can be
used in order to determine orbital parameters of a binary star. | astro-ph_IM |
4MOST: Project overview and information for the First Call for Proposals: We introduce the 4-metre Multi-Object Spectroscopic Telescope (4MOST), a new
high-multiplex, wide-field spectroscopic survey facility under development for
the four-metre-class Visible and Infrared Survey Telescope for Astronomy
(VISTA) at Parana... | astro-ph_IM |
Optimizing Gravitational-Wave Detector Design for Squeezed Light: Achieving the quantum noise targets of third-generation detectors will
require 10 dB of squeezed-light enhancement as well as megawatt laser power in
the interferometer arms - both of which require unprecedented control of the
internal optical losses. In... | astro-ph_IM |
SORA: Stellar Occultation Reduction and Analysis: The stellar occultation technique provides competitive accuracy in
determining the sizes, shapes, astrometry, etc., of the occulting body,
comparable to in-situ observations by spacecraft. With the increase in the
number of known Solar System objects expected from the L... | astro-ph_IM |
Astrophysics Source Code Library: Here we grow again!: The Astrophysics Source Code Library (ASCL) is a free online registry of
research codes; it is indexed by ADS and Web of Science and has over 1300 code
entries. Its entries are increasingly used to cite software; citations have
been doubling each year since 2012 an... | astro-ph_IM |
Seeing Black Holes : from the Computer to the Telescope: Astronomical observations are about to deliver the very first telescopic
image of the massive black hole lurking at the Galactic Center. The mass of
data collected in one night by the Event Horizon Telescope network, exceeding
everything that has ever been done i... | astro-ph_IM |
Cn2 profile from Shack-Hartmann data with CO-SLIDAR data processing: Cn2 profile monitoring usually makes use of wavefront slope correlations or
of scintillation pattern correlations. Wavefront slope correlations provide
sensitivity to layers close to the receiving plane. In addition, scintillation
correlations allow a... | astro-ph_IM |
On Optimal Geometry for Space Interferometers: This paper examines options for orbit configurations for a space
interferometer. In contrast to previously presented concepts for space very
long baseline interferometry, we propose a combination of regular and
retrograde near-Earth circular orbits in order to achieve a fa... | astro-ph_IM |
Technical Note: Asteroid Detection Demonstration from SkySat-3 B612 Data
using Synthetic Tracking: We report results from analyzing the B612 asteroid observation data taken by
the sCMOS cameras on board of Planet SkySat-3 using the synthetic tracking
technique. The analysis demonstrates the expected sensitivity impro... | astro-ph_IM |
WAHRSIS: A Low-cost, High-resolution Whole Sky Imager With Near-Infrared
Capabilities: Cloud imaging using ground-based whole sky imagers is essential for a
fine-grained understanding of the effects of cloud formations, which can be
useful in many applications. Some such imagers are available commercially, but
their ... | astro-ph_IM |
The 4m International Liquid Mirror Telescope project: The International Liquid Mirror Telescope (ILMT) project is a scientific
collaboration in observational astrophysics between the Li{\`e}ge Institute of
Astrophysics and Geophysics (Li{\`e}ge University, Belgium), the Aryabatta
Research Institute of observational sci... | astro-ph_IM |
The Unified Astronomy Thesaurus: The Unified Astronomy Thesaurus (UAT) is an open, interoperable and
community-supported thesaurus which unifies the existing divergent and isolated
Astronomy & Astrophysics vocabularies into a single high-quality,
freely-available open thesaurus formalizing astronomical concepts and the... | astro-ph_IM |
The International Pulsar Timing Array: The International Pulsar Timing Array (IPTA) is an organisation whose raison
d'etre is to facilitate collaboration between the three main existing PTAs (the
EPTA in Europe, NANOGrav in North America and the PPTA in Australia) in order
to realise the benefits of combined PTA data s... | astro-ph_IM |
Systematics in the ALMA Proposal Review Rankings: The results from the ALMA proposal peer review process in Cycles 0-6 are
analyzed to identify any systematics in the scientific rankings that may
signify bias. Proposal rankings are analyzed with respect to the experience
level of a Principal Investigator (PI) in submit... | astro-ph_IM |
RSM detection map for direct exoplanet detection in ADI sequences: Beyond the choice of wavefront control systems or coronographs, advanced data
processing methods play a crucial role in disentangling potential planetary
signals from bright quasi-static speckles. Among these methods, angular
differential imaging (ADI) ... | astro-ph_IM |
The star catalogue of Wilhelm IV, Landgraf von Hessen-Kassel: Accuracy
of the catalogue and of the measurements: We analyse a manuscript star catalogue by Wilhem IV, Landgraf von
Hessen-Kassel, from 1586. From measurements of altitudes and of angles between
stars, given in the catalogue, we find that the measurement ... | astro-ph_IM |
Efficient least-squares basket-weaving: We report on a novel method to solve the basket-weaving problem.
Basket-weaving is a technique that is used to remove scan-line patterns from
single-dish radio maps. The new approach applies linear least-squares and works
on gridded maps from arbitrarily sampled data, which great... | astro-ph_IM |
A template method for measuring the iron spectrum in cosmic rays with
Cherenkov telescopes: The energy-dependent abundance of elements in cosmic rays plays an important
role in understanding their acceleration and propagation. Most current results
are obtained either from direct measurements by balloon- or satellite-... | astro-ph_IM |
Characterization and correction of charge-induced pixel shifts in DECam: Interaction of charges in CCDs with the already accumulated charge
distribution causes both a flux dependence of the point-spread function (an
increase of observed size with flux, also known as the brighter/fatter effect)
and pixel-to-pixel correl... | astro-ph_IM |
Optimal Probabilistic Catalogue Matching for Radio Sources: Cross-matching catalogues from radio surveys to catalogues of sources at
other wavelengths is extremely hard, because radio sources are often extended,
often consist of several spatially separated components, and often no radio
component is coincident with the... | astro-ph_IM |
Reaching Diverse Groups in Long-Term Astronomy Public Engagement Efforts: Professional astronomy is historically not an environment of diverse
identities. In recognizing that public outreach efforts affect career outcomes
for young people, it is important to assess the demographics of those being
reached and continuall... | astro-ph_IM |
Analysis of a Custom Support Vector Machine for Photometric Redshift
Estimation and the Inclusion of Galaxy Shape Information: Aims: We present a custom support vector machine classification package for
photometric redshift estimation, including comparisons with other methods. We
also explore the efficacy of includin... | astro-ph_IM |
COMAP Early Science: II. Pathfinder Instrument: Line intensity mapping (LIM) is a new technique for tracing the global
properties of galaxies over cosmic time. Detection of the very faint signals
from redshifted carbon monoxide (CO), a tracer of star formation, pushes the
limits of what is feasible with a total-power i... | astro-ph_IM |
Stout: Cloudy's Atomic and Molecular Database: We describe a new atomic and molecular database we developed for use in the
spectral synthesis code Cloudy. The design of Stout is driven by the data needs
of Cloudy, which simulates molecular, atomic, and ionized gas with kinetic
temperatures 2.8 K < T < 1e10 K and densit... | astro-ph_IM |
Adapting the PyCBC pipeline to find and infer the properties of
gravitational waves from massive black hole binaries in LISA: The Laser Interferometer Space Antenna (LISA), due for launch in the mid
2030s, is expected to observe gravitational waves (GW)s from merging massive
black hole binaries (MBHB)s. These signals... | astro-ph_IM |
Astrobiological Complexity with Probabilistic Cellular Automata: Search for extraterrestrial life and intelligence constitutes one of the
major endeavors in science, but has yet been quantitatively modeled only rarely
and in a cursory and superficial fashion. We argue that probabilistic cellular
automata (PCA) represen... | astro-ph_IM |
A Novel Greedy Approach To Harmonic Summing Using GPUs: Incoherent harmonic summing is a technique which is used to improve the
sensitivity of Fourier domain search methods. A one dimensional harmonic sum is
used in time-domain radio astronomy as part of the Fourier domain periodicity
search, a type of search used to d... | astro-ph_IM |
The Simons Observatory 220 and 280 GHz Focal-Plane Module: Design and
Initial Characterization: The Simons Observatory (SO) will detect and map the temperature and
polarization of the millimeter-wavelength sky from Cerro Toco, Chile across a
range of angular scales, providing rich data sets for cosmological and
astro... | astro-ph_IM |
High-Contrast Testbeds for Future Space-Based Direct Imaging Exoplanet
Missions: Instrumentation techniques in the field of direct imaging of exoplanets have
greatly advanced over the last two decades. Two of the four NASA-commissioned
large concept studies involve a high-contrast instrument for the imaging and
spect... | astro-ph_IM |
Planck-LFI radiometers tuning: "This paper is part of the Prelaunch status LFI papers published on JINST:
http://www.iop.org/EJ/journal/-page=extra.proc5/jinst"
This paper describes the Planck Low Frequency Instrument tuning activities
performed through the ground test campaigns, from Unit to Satellite Levels.
Tuning... | astro-ph_IM |
A tomographic algorithm to determine tip-tilt information from laser
guide stars: Laser Guide Stars (LGS) have greatly increased the sky-coverage of Adaptive
Optics (AO) systems. Due to the up-link turbulence experienced by LGSs, a
Natural Guide Star (NGS) is still required, preventing full sky-coverage. We
present a... | astro-ph_IM |
Information field theory: Non-linear image reconstruction and signal analysis deal with complex inverse
problems. To tackle such problems in a systematic way, I present information
field theory (IFT) as a means of Bayesian, data based inference on spatially
distributed signal fields. IFT is a statistical field theory, ... | astro-ph_IM |
Optimum Acceptance Regions for Direct Dark Matter Searches: Most experiments that search for direct interactions of WIMP dark matter with
a target can distinguish the dominant electronrecoil background from the
nuclear recoil signal, based on some discrimination parameter. An acceptance
region is defined inthe paramete... | astro-ph_IM |
The BINGO Project II: Instrument Description: The measurement of diffuse 21-cm radiation from the hyperfine transition of
neutral hydrogen (HI signal) in different redshifts is an important tool for
modern cosmology. However, detecting this faint signal with non-cryogenic
receivers in single-dish telescopes is a challe... | astro-ph_IM |
Automated Speckle Interferometry of Known Binaries: Astronomers have been measuring the separations and position angles between
the two components of binary stars since William Herschel began his
observations in 1781. In 1970, Anton Labeyrie pioneered a method, speckle
interferometry, that overcomes the usual resolutio... | astro-ph_IM |
LIGO series, dimension of embedding and Kolmogorov's complexity: The interpretation of the series recorded by the Laser Interferometer
Gravitational Wave Observatory is a very important issue. Naturally, it is not
free of controversy. Here we apply two methods widely used in the study of
nonlinear dynamical systems, na... | astro-ph_IM |
4MOST Consortium Survey 10: The Time-Domain Extragalactic Survey (TiDES): The Time-Domain Extragalactic Survey (TiDES) is focused on the spectroscopic
follow-up of extragalactic optical transients and variable sources selected
from forthcoming large sky surveys such as that from the Large Synoptic Survey
Telescope (LSS... | astro-ph_IM |
Miniature X-Ray Solar Spectrometer (MinXSS) - A Science-Oriented,
University 3U CubeSat: The Miniature X-ray Solar Spectrometer (MinXSS) is a 3-Unit (3U) CubeSat
developed at the Laboratory for Atmospheric and Space Physics (LASP) at the
University of Colorado, Boulder (CU). Over 40 students contributed to the
projec... | astro-ph_IM |
Daemons: Detection at Pulkovo, Gran Sasso, and Soudan: During a week of the March maximum in 2011, two oppositely installed
direction-sensitive TEU-167d Dark Electron Multipliers (DEMs) recorded a flux
of daemons from the near-Earth almost circular heliocentric orbits (NEACHOs).
The flux measured from above is f \appro... | astro-ph_IM |
On the Estimation of the Depth of Maximum of Extensive Air Showers Using
the Steepness Parameter of the Lateral Distribution of Cherenkov Radiation: Using Monte Carlo simulation of extensive air showers, we showed that the
maximum depth of showers, $X_{max}$ can be estimated using $P=Q(100)/Q(200)$,
the ratio of Cher... | astro-ph_IM |
Applied Machine-Learning Models to Identify Spectral Sub-Types of M
Dwarfs from Photometric Surveys: M dwarfs are the most abundant stars in the Solar Neighborhood and they are
prime targets for searching for rocky planets in habitable zones. Consequently,
a detailed characterization of these stars is in demand. The ... | astro-ph_IM |
The SVOM gamma-ray burst mission: We briefly present the science capabilities, the instruments, the operations,
and the expected performance of the SVOM mission. SVOM (Space-based multiband
astronomical Variable Objects Monitor) is a Chinese-French space mission
dedicated to the study of Gamma-Ray Bursts (GRBs) in the ... | astro-ph_IM |
Optimal detuning for quantum filter cavities: Vacuum quantum fluctuations impose a fundamental limit on the sensitivity of
gravitational-wave interferometers, which rank among the most sensitive
precision measurement devices ever built. The injection of conventional
squeezed vacuum reduces quantum noise in one quadratu... | astro-ph_IM |
Sub-Kelvin Cooling for the BICEP Array Project: In the field of astrophysics, the faint signal from distant galaxies and
other dim cosmological sources at millimeter and submillimeter wavelengths
require the use of high-sensitivity experiments. Cryogenics and the use of
low-temperature detectors are essential to the ac... | astro-ph_IM |
Concept of multiple-cell cavity for axion dark matter search: In cavity-based axion dark matter search experiments exploring high mass
regions, multiple-cavity design is considered to increase the detection volume
within a given magnet bore. We introduce a new idea, referred to as
multiple-cell cavity, which provides v... | astro-ph_IM |
KilonovaNet: Surrogate Models of Kilonova Spectra with Conditional
Variational Autoencoders: Detailed radiative transfer simulations of kilonova spectra play an essential
role in multimessenger astrophysics. Using the simulation results in parameter
inference studies requires building a surrogate model from the simul... | astro-ph_IM |
Reduced Order Estimation of the Speckle Electric Field History for
Space-Based Coronagraphs: In high-contrast space-based coronagraphs, one of the main limiting factors
for imaging the dimmest exoplanets is the time varying nature of the residual
starlight (speckles). Modern methods try to differentiate between the
i... | astro-ph_IM |
A High Sensitivity Fourier Transform Spectrometer for Cosmic Microwave
Background Observations: The QUIJOTE Experiment was developed to study the polarization in the Cosmic
Microwave Background (CMB) over the frequency range of 10-50 GHz. Its first
instrument, the Multi Frequency Instrument (MFI), measures in the ran... | astro-ph_IM |
A Parallel Monte Carlo Code for Simulating Collisional N-body Systems: We present a new parallel code for computing the dynamical evolution of
collisional N-body systems with up to N~10^7 particles. Our code is based on
the the Henon Monte Carlo method for solving the Fokker-Planck equation, and
makes assumptions of sp... | astro-ph_IM |
The LSST era of supermassive black holes accretion-disk reverberation
mapping: The Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) will
detect an unprecedentedly large sample of actively accreting supermassive black
holes with typical accretion disk (AD) sizes of a few light days. This brings
us to f... | astro-ph_IM |
Application of the optimised next neighbour image cleaning method to the
VERITAS array: Imaging atmospheric Cherenkov telescopes, such as the VERITAS array, are
subject to the Night Sky Background (NSB) and electronic noise, which
contribute to the total signal of pixels in the telescope camera. The
contribution of n... | astro-ph_IM |
Using multiobjective optimization to reconstruct interferometric data
(II): polarimetry and time dynamics: In Very Long Baseline Interferometry (VLBI), signals from multiple antennas
combine to create a sparsely sampled virtual aperture, its effective diameter
determined by the largest antenna separation. The inheren... | astro-ph_IM |
Astronomy & Astrophysics in ICAD History: The International Conference on Auditory Display (ICAD) is a significant
event for researchers and practitioners interested in exploring the use of
sound in conveying information and data. Since its inception in 1994, the
conference has served as a vital forum for exchanging id... | astro-ph_IM |
Broadband spectroscopy of astrophysical ice analogs. I. Direct
measurement of complex refractive index of CO ice using terahertz time-domain
spectroscopy: Context: Reliable, directly measured optical properties of astrophysical ice
analogs in the infrared (IR) and terahertz (THz) range are missing. These
parameters... | astro-ph_IM |
Response of the XENON100 Dark Matter Detector to Nuclear Recoils: Results from the nuclear recoil calibration of the XENON100 dark matter
detector installed underground at the Laboratori Nazionali del Gran Sasso
(LNGS), Italy are presented. Data from measurements with an external 241AmBe
neutron source are compared wit... | astro-ph_IM |
Charge Transfer Inefficiency in the Hubble Space Telescope since
Servicing Mission 4: We update a physically-motivated model of radiation damage in the Hubble
Space Telescope Advanced Camera for Surveys/Wide Field Channel, using data up
to mid 2010. We find that Charge Transfer Inefficiency increased dramatically
bef... | astro-ph_IM |
Explicit expansion of the three-body disturbing function for arbitrary
eccentricities and inclinations: Since the original work of Hansen and Tisserand in the XIXth century, there
have been many variations in the analytical expansion of the three-body
disturbing function in series of the semi-major axis ratio. With t... | astro-ph_IM |
Agile Earth observation satellite scheduling over 20 years:
formulations, methods and future directions: Agile satellites with advanced attitude maneuvering capability are the new
generation of Earth observation satellites (EOSs). The continuous improvement
in satellite technology and decrease in launch cost have boo... | astro-ph_IM |
Research Performance of Turkish Astronomers in the Period of 1980-2010: We investigated the development of astronomy and astrophysics research
productivity in Turkey in terms of publication output and their impacts as
reflected in the Science Citation Index (SCI) for the period 1980-2010. It
includes 838 refereed publi... | astro-ph_IM |
Astronomical Imagery: Considerations For a Contemporary Approach with
JPEG2000: The new wide-field radio telescopes, such as: ASKAP, MWA, LOFAR, eVLA and
SKA; will produce spectral-imaging data-cubes (SIDC) of unprecedented size --
in the order of hundreds of Petabytes. Servicing such data as images to the
end-user i... | astro-ph_IM |
Tokyo Axion Helioscope: The idea of a magnetic axion helioscope was first proposed by Pierre Sikivie
in 1983. Tokyo axion helioscope was built exploiting its detection principle
with a dedicated cryogen-free superconducting magnet and PIN photodiodes for
x-ray detectors. Solar axions, if exist, would be converted into ... | astro-ph_IM |
Dome C site testing: long term statistics of integrated optical
turbulence parameters at ground level: We present long term site testing statistics obtained at Dome C, Antarctica
with various experiments deployed within the Astroconcordia programme since
2003. We give values of integrated turbulence parameters in the... | astro-ph_IM |
Classification methods for noise transients in advanced
gravitational-wave detectors II: performance tests on Advanced LIGO data: The data taken by the advanced LIGO and Virgo gravitational-wave detectors
contains short duration noise transients that limit the significance of
astrophysical detections and reduce the d... | astro-ph_IM |
A Novel Source of Tagged Low-Energy Nuclear Recoils: For sufficiently wide resonances, nuclear resonance fluorescence behaves like
elastic photo-nuclear scattering while retaining the large cross-section
characteristic of resonant photo-nuclear absorption. We show that NRF may be
used to characterize the signals produc... | astro-ph_IM |
Agile Software Engineering and Systems Engineering at SKA Scale: Systems Engineering (SE) is the set of processes and documentation required
for successfully realising large-scale engineering projects, but the classical
approach is not a good fit for software-intensive projects, especially when the
needs of the differe... | astro-ph_IM |
The Transients Handler System for the Cherenkov Telescope Array
Observatory: The Cherenkov Telescope Array Observatory (CTAO) will be the largest and most
advanced ground-based facility for gamma-ray astronomy. Several dozens of
telescopes will be operated at both the Northern and Southern Hemisphere. With
the advent... | astro-ph_IM |
A Study of the Effect of Molecular and Aerosol Conditions in the
Atmosphere on Air Fluorescence Measurements at the Pierre Auger Observatory: The air fluorescence detector of the Pierre Auger Observatory is designed to
perform calorimetric measurements of extensive air showers created by cosmic
rays of above 10^18 eV... | astro-ph_IM |
WOMBAT: A Scalable and High Performance Astrophysical MHD Code: We present a new code for astrophysical magneto-hydrodynamics specifically
designed and optimized for high performance and scaling on modern and future
supercomputers. We describe a novel hybrid OpenMP/MPI programming model that
emerged from a collaboratio... | astro-ph_IM |
FACT: Towards Robotic Operation of an Imaging Air Cherenkov Telescope: The First G-APD Cherenkov Telescope (FACT) became operational at La Palma in
October 2011. Since summer 2012, due to very smooth and stable operation, it is
the first telescope of its kind that is routinely operated from remote, without
the need for... | astro-ph_IM |
The Large Array Survey Telescope -- Pipeline. I. Basic image reduction
and visit coaddition: The Large Array Survey Telescope (LAST) is a wide-field telescope designed to
explore the variable and transient sky with a high cadence and to be a test-bed
for cost-effective telescope design. A LAST node is composed of 48 ... | astro-ph_IM |
matvis: A matrix-based visibility simulator for fast forward modelling
of many-element 21 cm arrays: Detection of the faint 21 cm line emission from the Cosmic Dawn and Epoch of
Reionisation will require not only exquisite control over instrumental
calibration and systematics to achieve the necessary dynamic range of... | astro-ph_IM |
SSTRED: Data- and metadata-processing pipeline for CHROMIS and CRISP: Context: Data from ground-based, high-resolution solar telescopes can only be
used for science with calibrations and processing, which requires detailed
knowledge about the instrumentation. [...] Aims: We aim to provide observers
with a user-friendly... | astro-ph_IM |
Measurements of diffusion of volatiles in amorphous solid water:
application to interstellar medium environments: The diffusion of atoms and molecules in ices covering dust grains in dense
clouds in interstellar space is an important but poorly characterized step in
the formation of complex molecules in space. Here w... | astro-ph_IM |
Towards 10 cm/s radial velocity accuracy on the Sun using a Fourier
transform spectrometer: The IAG solar observatory is producing high-fidelity, ultra-high-resolution
spectra (R>500000) of the spatially resolved surface of the Sun using a Fourier
Transform spectrometer (FTS). The radial velocity (RV) calibration of ... | astro-ph_IM |
Ray-tracing 3D dust radiative transfer with DART-Ray: code upgrade and
public release: We present an extensively updated version of the purely ray-tracing 3D dust
radiation transfer code DART-Ray. The new version includes five major upgrades
: 1) a series of optimizations for the ray-angular density and the scattered... | astro-ph_IM |
Design, pointing control, and on-sky performance of the mid-infrared
vortex coronagraph for the VLT/NEAR experiment: Vortex coronagraphs have been shown to be a promising avenue for
high-contrast imaging in the close-in environment of stars at thermal infrared
(IR) wavelengths. They are included in the baseline desig... | astro-ph_IM |
Spread spectrum for imaging techniques in radio interferometry: We consider the probe of astrophysical signals through radio interferometers
with small field of view and baselines with non-negligible and constant
component in the pointing direction. In this context, the visibilities measured
essentially identify with a... | astro-ph_IM |
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