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Roman CCS White Paper: Optimizing the HLTDS Cadence at Fixed Depth: The current proposal for the High Latitude Time Domain Survey (HLTDS) is two
tiers (wide and deep) of multi-band imaging and prism spectroscopy with a
cadence of five days (Rose et al., 2021). The five-day cadence is motivated by
the desire to measure ... | 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 |
Design and optimization of a dispersive unit based on cascaded volume
phase holographic gratings: We describe a dispersive unit consisting of cascaded volume-phase holographic
gratings for spectroscopic applications. Each of the gratings provides high
diffractive efficiency in a relatively narrow wavelength range and... | astro-ph_IM |
IVOA Recommendation: Simple Cone Search Version 1.03: This specification defines a simple query protocol for retrieving records
from a catalog of astronomical sources. The query describes sky position and an
angular distance, defining a cone on the sky. The response returns a list of
astronomical sources from the catal... | astro-ph_IM |
Intrinsic Instrumental Polarization and High-Precision Pulsar Timing: Radio telescopes are used to accurately measure the time of arrival (ToA) of
radio pulses in pulsar timing experiments that target mostly millisecond
pulsars (MSPs) due to their high rotational stability. This allows for detailed
study of MSPs and fo... | astro-ph_IM |
Effects of transients in LIGO suspensions on searches for gravitational
waves: This paper presents an analysis of the transient behavior of the Advanced
LIGO suspensions used to seismically isolate the optics. We have characterized
the transients in the longitudinal motion of the quadruple suspensions during
Advanced... | astro-ph_IM |
The Eleventh and Twelfth Data Releases of the Sloan Digital Sky Survey:
Final Data from SDSS-III: The third generation of the Sloan Digital Sky Survey (SDSS-III) took data
from 2008 to 2014 using the original SDSS wide-field imager, the original and
an upgraded multi-object fiber-fed optical spectrograph, a new near-... | astro-ph_IM |
Probing the Spacetime Around Supermassive Black Holes with Ejected
Plasma Blobs: Millimeter-wavelength VLBI observations of the supermassive black holes in
Sgr A* and M87 by the Event Horizon Telescope could potentially trace the
dynamics of ejected plasma blobs in real time. We demonstrate that the
trajectory and ti... | astro-ph_IM |
SISPO: Space Imaging Simulator for Proximity Operations: This paper describes the architecture and demonstrates the capabilities of a
newly developed, physically-based imaging simulator environment called SISPO,
developed for small solar system body fly-by and terrestrial planet surface
mission simulations. The image s... | astro-ph_IM |
The PLATO Payload Data Processing System SpaceWire network: PLATO has been selected and adopted by ESA as the third medium-class Mission
(M3) of the Cosmic Vision Program, to be launched in 2026 with a Soyuz-Fregat
rocket from the French Guiana. Its Payload is based on a suite of 26 telescopes
and cameras in order to d... | astro-ph_IM |
Strong Lens Time Delay Challenge: I. Experimental Design: The time delays between point-like images in gravitational lens systems can
be used to measure cosmological parameters. The number of lenses with measured
time delays is growing rapidly; the upcoming \emph{Large Synoptic Survey
Telescope} (LSST) will monitor $\s... | astro-ph_IM |
IVOA Recommendation: IVOA Astronomical Data Query Language Version 2.00: This document describes the Astronomical Data Query Language (ADQL). ADQL has
been developed based on SQL92. This document describes the subset of the SQL
grammar supported by ADQL. Special restrictions and extensions to SQL92 have
been defined in... | astro-ph_IM |
Woofer-tweeter deformable mirror control for closed-loop adaptive
optics: theory and practice: Deformable mirrors with very high order correction generally have smaller
dynamic range of motion than what is required to correct seeing over large
aperture telescopes. As a result, systems will need to have an architectur... | astro-ph_IM |
Background analysis and status of the ANAIS dark matter project: ANAIS (Annual modulation with NaI Scintillators) is a project aiming to set
up at the new facilities of the Canfranc Underground Laboratory (LSC), a large
scale NaI(Tl) experiment in order to explore the DAMA/LIBRA annual modulation
positive result using ... | astro-ph_IM |
Gaia Data Release 3: Gaia scan-angle dependent signals and spurious
periods: Context: Gaia DR3 time series data may contain spurious signals related to
the time-dependent scan angle. Aims: We aim to explain the origin of scan-angle
dependent signals and how they can lead to spurious periods, provide statistics
to ide... | astro-ph_IM |
An elastic lidar system for the H.E.S.S. Experiment: The H.E.S.S. experiment in Namibia, Africa, is a high energy gamma ray tele-
scope sensitive in the energy range from 100 Gev to a few tens of TeV, via the
use of the atmospheric Cherenkov technique. To minimize the systematic errors
on the derived fluxes of the meas... | astro-ph_IM |
Large-aperture wide-bandwidth antireflection-coated silicon lenses for
millimeter wavelengths: The increasing scale of cryogenic detector arrays for sub-millimeter and
millimeter wavelength astrophysics has led to the need for large aperture, high
index of refraction, low loss, cryogenic refracting optics. Silicon wi... | astro-ph_IM |
Non-linear parameter estimation for the LTP experiment: analysis of an
operational exercise: The precursor ESA mission LISA-Pathfinder, to be flown in 2013, aims at
demonstrating the feasibility of the free-fall, necessary for LISA, the
upcoming space-born gravitational wave observatory. LISA Technology Package
(LTP)... | astro-ph_IM |
Galaxy Image Classification using Hierarchical Data Learning with
Weighted Sampling and Label Smoothing: With the development of a series of Galaxy sky surveys in recent years, the
observations increased rapidly, which makes the research of machine learning
methods for galaxy image recognition a hot topic. Available ... | astro-ph_IM |
STROBE-X: X-ray Timing and Spectroscopy on Dynamical Timescales from
Microseconds to Years: We present the Spectroscopic Time-Resolving Observatory for Broadband Energy
X-rays (STROBE-X), a probe-class mission concept selected for study by NASA. It
combines huge collecting area, high throughput, broad energy coverage... | astro-ph_IM |
Historical astronomical data: urgent need for preservation, digitization
enabling scientific exploration: Over the past decades and even centuries, the astronomical community has
accumulated a signif-icant heritage of recorded observations of a great many
astronomical objects. Those records con-tain irreplaceable inf... | astro-ph_IM |
Homography-Based Correction of Positional Errors in MRT Survey: The Mauritius Radio Telescope (MRT) images show systematics in the positional
errors of sources when compared to source positions in the Molonglo Reference
Catalogue (MRC). We have applied two-dimensional homography to correct
positional errors in the imag... | astro-ph_IM |
SAT.STFR.FRQ (UWA) Detail Design Report (MID): The Square Kilometre Array (SKA) project is an international effort to build
the world's most sensitive radio telescope operating in the 50 MHz to 14 GHz
frequency range. Construction of the SKA is divided into phases, with the first
phase (SKA1) accounting for the first 1... | astro-ph_IM |
Understanding synthesis imaging dynamic range: We develop a general framework for quantifying the many different
contributions to the noise budget of an image made with an array of dishes or
aperture array stations. Each noise contribution to the visibility data is
associated with a relevant correlation timescale and f... | astro-ph_IM |
Unveiling the Dynamic Infrared Sky with Gattini-IR: While optical and radio transient surveys have enjoyed a renaissance over the
past decade, the dynamic infrared sky remains virtually unexplored. The
infrared is a powerful tool for probing transient events in dusty regions that
have high optical extinction, and for d... | astro-ph_IM |
Multimessenger Astronomy and Astrophysics Synergies: A budget neutral strategy is proposed for NSF to lead the implementation of
multimessenger astronomy and astrophysics, as outlined in the Astro2010 Decadal
Survey. The emerging capabilities for simultaneous measurements of physical and
astronomical data through the d... | astro-ph_IM |
Sensitivity curves for searches for gravitational-wave backgrounds: We propose a graphical representation of detector sensitivity curves for
stochastic gravitational-wave backgrounds that takes into account the increase
in sensitivity that comes from integrating over frequency in addition to
integrating over time. This... | astro-ph_IM |
The performance of the bolometer array and readout system during the
2012/2013 flight of the E and B experiment (EBEX): EBEX is a balloon-borne telescope designed to measure the polarization of the
cosmic microwave background radiation. During its eleven day science flight in
the Austral Summer of 2012, it operated 9... | astro-ph_IM |
Detectability of Galactic Faraday Rotation in Multi-wavelength CMB
Observations: A Cross-Correlation Analysis of CMB and Radio Maps: We introduce a new cross-correlation method to detect and verify the
astrophysical origin of Faraday Rotation (FR) in multiwavelength surveys. FR is
well studied in radio astronomy from... | astro-ph_IM |
Conditional Density Estimation Tools in Python and R with Applications
to Photometric Redshifts and Likelihood-Free Cosmological Inference: It is well known in astronomy that propagating non-Gaussian prediction
uncertainty in photometric redshift estimates is key to reducing bias in
downstream cosmological analyses. ... | astro-ph_IM |
Efficient generation and optimization of stochastic template banks by a
neighboring cell algorithm: Placing signal templates (grid points) as efficiently as possible to cover a
multi-dimensional parameter space is crucial in computing-intensive
matched-filtering searches for gravitational waves, but also in similar
s... | astro-ph_IM |
Space very long baseline interferometry in China: Space very long baseline interferometry (VLBI) has unique applications in
high-resolution imaging of fine structure of astronomical objects and
high-precision astrometry due to the key long space-Earth or space-space
baselines beyond the Earth's diameter. China has been... | astro-ph_IM |
A linearized approach to radial velocity extraction: High-precision radial velocity (RV) measurements are crucial for exoplanet
detection and characterisation. Efforts to achieve ~10 cm/s precision have been
made over the recent decades, with significant advancements in instrumentation,
data reduction techniques, and s... | astro-ph_IM |
Estimating Extinction using Unsupervised Machine Learning: Dust extinction is the most robust tracer of the gas distribution in the
interstellar medium, but measuring extinction is limited by the systematic
uncertainties involved in estimating the intrinsic colors to background stars.
In this paper we present a new tec... | astro-ph_IM |
Supersonic turbulence simulations with GPU-based high-order
Discontinuous Galerkin hydrodynamics: We investigate the numerical performance of a Discontinuous Galerkin (DG)
hydrodynamics implementation when applied to the problem of driven, isothermal
supersonic turbulence. While the high-order element-based spectral ... | astro-ph_IM |
Mechanical cryocooler noise observed in the ground testing of the
Resolve X-ray microcalorimeter onboard XRISM: Low-temperature detectors often use mechanical coolers as part of the cooling
chain in order to reach sub-Kelvin operating temperatures. The microphonics
noise caused by the mechanical coolers is a general ... | astro-ph_IM |
Low-frequency wideband timing of InPTA pulsars observed with the uGMRT: High-precision measurements of the pulsar dispersion measure (DM) are
possible using telescopes with low-frequency wideband receivers. We present an
initial study of the application of the wideband timing technique, which can
simultaneously measure... | astro-ph_IM |
Flexure updates to MOSFIRE on the Keck I telescope: We present a recent evaluation and updates applied to the Multi-Object
Spectrometer For Infra-Red Exploration (MOSFIRE) on the Keck I telescope. Over
the course of significantly long integrations, when MOSFIRE sits on one mask
for $>$4 hours, a slight drift in mask st... | astro-ph_IM |
First on-sky results of a FIOS prototype, a Fabry Perot Based Instrument
for Oxygen Searches: The upcoming Extremely Large Telescopes (ELTs) are expected to have the
collecting area required to detect potential biosignature gases such as
molecular oxygen, $\mathrm{O_2}$, in the atmosphere of terrestrial planets
aroun... | astro-ph_IM |
Development of Dual-Gain SiPM Boards for Extending the Energy Dynamic
Range: Astronomical observations with gamma rays in the range of several hundred keV
to hundreds of MeV currently represent the least explored energy range. To
address this so-called MeV gap, we designed and built a prototype CsI:Tl
calorimeter ins... | astro-ph_IM |
First 230 GHz VLBI Fringes on 3C 279 using the APEX Telescope: We report about a 230 GHz very long baseline interferometry (VLBI) fringe
finder observation of blazar 3C 279 with the APEX telescope in Chile, the
phased submillimeter array (SMA), and the SMT of the Arizona Radio Observatory
(ARO). We installed VLBI equip... | astro-ph_IM |
First observations and magnitude measurement of Starlink's Darksat: Measure the Sloan g' magnitudes of the Starlink's STARLINK-1130 (Darksat) and
1113 LEO communication satellites and determine the effectiveness of the
Darksat darkening treatment at 475.4\,nm. Two observations of the Starlink's
Darksat LEO communicatio... | astro-ph_IM |
The ROAD to discovery: machine learning-driven anomaly detection in
radio astronomy spectrograms: As radio telescopes increase in sensitivity and flexibility, so do their
complexity and data-rates. For this reason automated system health management
approaches are becoming increasingly critical to ensure nominal teles... | astro-ph_IM |
Effects of the Hunga Tonga-Hunga Ha'apai Volcanic Eruption on
Observations at Paranal Observatory: The Hunga Tonga-Hunga Ha'apai volcano erupted on 15 January 2022 with an
energy equivalent to around 61 megatons of TNT. The explosion was bigger than
any other volcanic eruption so far in the 21st century. Huge quantit... | astro-ph_IM |
A Constrained Transport Scheme for MHD on Unstructured Static and Moving
Meshes: Magnetic fields play an important role in many astrophysical systems and a
detailed understanding of their impact on the gas dynamics requires robust
numerical simulations. Here we present a new method to evolve the ideal
magnetohydrodyn... | astro-ph_IM |
Optical Cross Correlation Filters: An Economical Approach for
Identifying SNe Ia and Estimating their Redshifts: Large photometric surveys of transient phenomena, such as Pan-STARRS and
LSST, will locate thousands to millions of type Ia supernova candidates per
year, a rate prohibitive for acquiring spectroscopy to d... | astro-ph_IM |
Autocollimating compensator for controlling aspheric optical surfaces: A compensator (null-corrector) for testing aspheric optical surfaces is
proposed, which enables i) independent verification of optical elements and
assembling of the compensator itself, and ii) ascertaining the compensator
position in a control layo... | astro-ph_IM |
An optimized algorithm for multi-scale wideband deconvolution of radio
astronomical images: We describe a new multi-scale deconvolution algorithm that can also be used
in multi-frequency mode. The algorithm only affects the minor clean loop. In
single-frequency mode, the minor loop of our improved multi-scale algorit... | astro-ph_IM |
An Overview of CHIME, the Canadian Hydrogen Intensity Mapping Experiment: The Canadian Hydrogen Intensity Mapping Experiment (CHIME) is a drift scan
radio telescope operating across the 400-800 MHz band. CHIME is located at the
Dominion Radio Astrophysical Observatory near Penticton, BC Canada. The
instrument is design... | astro-ph_IM |
The JEM-EUSO Mission: Contributions to the ICRC 2013: Contributions of the JEM-EUSO Collaboration to the 33rd International Cosmic
Ray Conference (The Astroparticle Physics Conference) Rio de Janeiro, July,
2013. | astro-ph_IM |
Data mining techniques on astronomical spectra data. I : Clustering
Analysis: Clustering is an effective tool for astronomical spectral analysis, to mine
clustering patterns among data. With the implementation of large sky surveys,
many clustering methods have been applied to tackle spectroscopic and
photometric data... | astro-ph_IM |
Advanced Kelvin Probe Operational Methodology for Space Applications: We present a novel methodology for the operation of macroscopic Kelvin Probe
instruments. The methodology is based on the use of a harmonic backing
potential signal to drive the tip-sample variable capacitance and on a Fourier
representation of the t... | astro-ph_IM |
Improvements to the Search for Cosmic Dawn Using the Long Wavelength
Array: We present recent improvements to the search for the global Cosmic Dawn
signature using the Long Wavelength Array station located on the Sevilleta
National Wildlife Refuge in New Mexico, USA (LWA-SV). These improvements are
both in the method... | astro-ph_IM |
Effects of $150-1000$ eV Electron Impacts on Pure Carbon Monoxide Ices
using the Interstellar Energetic-Process System (IEPS): Pure CO ice has been irradiated with electrons of energy in the range
$150-1000$~eV with the Interstellar Energetic-Process System (IEPS). The main
products of irradiation are carbon chains C... | astro-ph_IM |
Bayesian inference for pulsar timing models: The extremely regular, periodic radio emission from millisecond pulsars makes
them useful tools for studying neutron star astrophysics, general relativity,
and low-frequency gravitational waves. These studies require that the observed
pulse times of arrival be fit to complex... | astro-ph_IM |
VOEvent Standard for Fast Radio Bursts: Fast radio bursts are a new class of transient radio phenomena currently
detected as millisecond radio pulses with very high dispersion measures. As new
radio surveys begin searching for FRBs a large population is expected to be
detected in real-time, triggering a range of multi-... | astro-ph_IM |
Study on the gain and photon detection efficiency drops of silicon
photomultipliers under bright background conditions: The use of silicon photomultipliers (SiPMs) in imaging atmospheric Cherenkov
telescopes is expected to extend the observation times of very-high-energy
gamma-ray sources, particularly within the hig... | astro-ph_IM |
Evolution of Data Formats in Very-High-Energy Gamma-ray Astronomy: Most major scientific results produced by ground-based gamma-ray telescopes
in the last 30 years have been obtained by expert members of the collaborations
operating these instruments. This is due to the proprietary data and software
policies adopted by... | astro-ph_IM |
Perspectives on Reproducibility and Sustainability of Open-Source
Scientific Software from Seven Years of the Dedalus Project: As the Science Mission Directorate contemplates establishing an open code
policy, we consider it timely to share our experiences as the developers of the
open-source partial differential equa... | astro-ph_IM |
A broadband scalar optical vortex coronagraph: In recent years, new coronagraphic schemes have been proposed, the most
promising being the optical vortex phase mask coronagraphs. In our work, a new
scheme of broadband optical scalar vortex coronagraph is proposed and
characterized experimentally in the laboratory. Our ... | astro-ph_IM |
The LOFAR View of Cosmic Magnetism: The origin of magnetic fields in the Universe is an open problem in
astrophysics and fundamental physics. Polarization observations with the
forthcoming large radio telescopes will open a new era in the observation of
magnetic fields and should help to understand their origin. At low... | astro-ph_IM |
Optimal PSF modeling for weak lensing: complexity and sparsity: We investigate the impact of point spread function (PSF) fitting errors on
cosmic shear measurements using the concepts of complexity and sparsity.
Complexity, introduced in a previous paper, characterizes the number of degrees
of freedom of the PSF. For i... | astro-ph_IM |
Design and performance of a Collimated Beam Projector for telescope
transmission measurement using a broadband light source: Type Ia supernovae are the most direct cosmological probe to study dark
energy in the recent Universe, for which the photometric calibration of
astronomical instruments remains one major source... | astro-ph_IM |
Gravitational Waves from Orphan Memory: Gravitational-wave memory manifests as a permanent distortion of an idealized
gravitational-wave detector and arises generically from energetic astrophysical
events. For example, binary black hole mergers are expected to emit memory
bursts a little more than an order of magnitude... | astro-ph_IM |
The Lexington Benchmarks for Numerical Simulations of Nebulae: We present the results of a meeting on numerical simulations of ionized
nebulae held at the University of Kentucky in conjunction with the celebration
of the 70th birthdays of Profs. Donald Osterbrock and Michael Seaton. | astro-ph_IM |
The KaVA and KVN Pulsar Project: We present our work towards using the Korean VLBI (Very Long Baseline
Interferometer) Network (KVN) and VLBI Exploration of Radio Astronomy (VERA)
arrays combined into the KVN and VERA Array (KaVA) for observations of radio
pulsars at high frequencies ($\simeq$22-GHz). Pulsar astronomy ... | astro-ph_IM |
Separating the EoR Signal with a Convolutional Denoising Autoencoder: A
Deep-learning-based Method: When applying the foreground removal methods to uncover the faint
cosmological signal from the epoch of reionization (EoR), the foreground
spectra are assumed to be smooth. However, this assumption can be seriously
vio... | astro-ph_IM |
The Signal-to-Noise Ratio for Photon Counting After Photometric
Corrections: Photon counting is a mode of processing astronomical observations of
low-signal targets that have been observed using an electron-multiplying
charge-coupled device (EMCCD). In photon counting, the EMCCD amplifies the
signal, and a thresholdi... | 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 |
fastRESOLVE: fast Bayesian imaging for aperture synthesis in radio
astronomy: The standard imaging algorithm for interferometric radio data, CLEAN, is
optimal for point source observations, but suboptimal for diffuse emission.
Recently, RESOLVE, a new Bayesian algorithm has been developed, which is ideal
for extended... | astro-ph_IM |
Atacama Compact Array Correlator for Atacama Large
Millimeter/submillimeter Array: We have developed a FX-architecture digital spectro-correlator, Atacama
Compact Array Correlator for the Atacama Large Millimeter/submillimeter Array.
The ACA Correlator processes four pairs of dual polarization signals, whose
bandwidt... | astro-ph_IM |
The Pégase.3 code of spectrochemical evolution of galaxies:
documentation and complements: P\'egase.3 is a Fortran 95 code modeling the spectral evolution of galaxies
from the far-ultraviolet to submillimeter wavelengths. It also follows the
chemical evolution of their stars, gas and dust.
For a given scenario (a s... | astro-ph_IM |
On-sky performance of the SPT-3G frequency-domain multiplexed readout: Frequency-domain multiplexing (fMux) is an established technique for the
readout of large arrays of transition edge sensor (TES) bolometers. Each TES in
a multiplexing module has a unique AC voltage bias that is selected by a
resonant filter. This s... | astro-ph_IM |
Pre-flight integration and characterization of the SPIDER balloon-borne
telescope: We present the results of integration and characterization of the SPIDER
instrument after the 2013 pre-flight campaign. SPIDER is a balloon-borne
polarimeter designed to probe the primordial gravitational wave signal in the
degree-scal... | astro-ph_IM |
BICEP3: a 95 GHz refracting telescope for degree-scale CMB polarization: BICEP3 is a 550 mm-aperture refracting telescope for polarimetry of radiation
in the cosmic microwave background at 95 GHz. It adopts the methodology of
BICEP1, BICEP2 and the Keck Array experiments - it possesses sufficient
resolution to search f... | astro-ph_IM |
The optimization of satellite orbit for Space-VLBI observation: By sending one or more telescopes into space, Space-VLBI (SVLBI) is able to
achieve even higher angular resolution and is therefore the trend of the VLBI
technique. For SVLBI program, the design of satellite orbits plays an important
role for the success o... | astro-ph_IM |
HIDE & SEEK: End-to-End Packages to Simulate and Process Radio Survey
Data: As several large single-dish radio surveys begin operation within the coming
decade, a wealth of radio data will become available and provide a new window
to the Universe. In order to fully exploit the potential of these data sets, it
is impo... | astro-ph_IM |
An Extension of the Athena++ Framework for Fully Conservative
Self-Gravitating Hydrodynamics: Numerical simulations of self-gravitating flows evolve a momentum equation
and an energy equation that account for accelerations and gravitational energy
releases due to a time-dependent gravitational potential. In this work... | astro-ph_IM |
Performance of multi-detector hybrid statistic in targeted compact
binary coalescence search: In this paper we compare the performance of two likelihood ratio based
detection statistics namely maximum likelihood ratio statistic and {\it hybrid}
statistic designed for the detection of gravitational waves from compact ... | astro-ph_IM |
A Joint Roman Space Telescope and Rubin Observatory Synthetic Wide-Field
Imaging Survey: We present and validate 20 deg$^2$ of overlapping synthetic imaging surveys
representing the full depth of the Nancy Grace Roman Space Telescope
High-Latitude Imaging Survey (HLIS) and five years of observations of the Vera
C. Ru... | astro-ph_IM |
Kinematic Modelling of Disc Galaxies using Graphics Processing Units: With large-scale Integral Field Spectroscopy (IFS) surveys of thousands of
galaxies currently under-way or planned, the astronomical community is in need
of methods, techniques and tools that will allow the analysis of huge amounts
of data. We focus ... | astro-ph_IM |
A proposal for relative in-flight flux self-calibrations for
spectro-photometric surveys: We present a method for the in-flight relative flux self-calibration of a
spectro-photometer instrument, general enough to be applied to any upcoming
galaxy survey on satellite. The instrument response function, that accounts fo... | astro-ph_IM |
Target Detection Framework for Lobster Eye X-Ray Telescopes with Machine
Learning Algorithms: Lobster eye telescopes are ideal monitors to detect X-ray transients, because
they could observe celestial objects over a wide field of view in X-ray band.
However, images obtained by lobster eye telescopes are modified by t... | astro-ph_IM |
Searching for high-energy neutrinos in coincidence with gravitational
waves with the ANTARES and VIRGO/LIGO detectors: Cataclysmic cosmic events can be plausible sources of both gravitational
waves (GW) and high-energy neutrinos (HEN). Both GW and HEN are alternative
cosmic messengers that may escape very dense media... | astro-ph_IM |
A Laser Frequency Comb System for Absolute Calibration of the VTT
Echelle Spectrograph: A wavelength calibration system based on a laser frequency comb (LFC) was
developed in a co-operation between the Kiepenheuer-Institut f\"ur
Sonnenphysik, Freiburg, Germany and the Max-Planck-Institut f\"ur Quantenoptik,
Garching,... | astro-ph_IM |
A Novel Technique to Observe Rapidly Pulsating Objects Using Spectral
Wave-Interaction Effects: Conventional techniques that measure rapid time variations are inefficient or
inadequate to discover and observe rapidly pulsating astronomical sources. It
is therefore conceivable that there exist some classes of objects ... | astro-ph_IM |
A Cryogenic Integrated Noise Calibration and Coupler Module Using a MMIC
LNA: A new cryogenic noise calibration source for radio astronomy receivers is
presented. Dissipated power is only 4.2 mW, allowing it to be integrated with
the cold part of the receiver. Measured long-term stability, sensitivity to
bias voltage... | astro-ph_IM |
Deep learning method for identifying mass composition of
ultra-high-energy cosmic rays: We introduce a novel method for identifying the mass composition of
ultra-high-energy cosmic rays using deep learning. The key idea of the method
is to use a chain of two neural networks. The first network predicts the type
of a p... | astro-ph_IM |
Aerosol characterization using satellite remote sensing of light
pollution sources at night: A demanding challenge in atmospheric research is the night-time
characterization of aerosols using passive techniques, that is, by extracting
information from scattered light that has not been emitted by the observer.
Satelli... | astro-ph_IM |
Wavefront error tolerancing for direct imaging of exo-Earths with a
large segmented telescope in space: Direct imaging of exo-Earths and search for life is one of the most exciting
and challenging objectives for future space observatories. Segmented apertures
in space will be required to reach the needed large diamet... | astro-ph_IM |
A Visible-light Lyot Coronagraph for SCExAO/VAMPIRES: We describe the design and initial results from a visible-light Lyot
coronagraph for SCExAO/VAMPIRES. The coronagraph is comprised of four
hard-edged, partially transmissive focal plane masks with inner working angles
of 36 mas, 55 mas, 92 mas, and 129 mas, respecti... | astro-ph_IM |
SST-GATE: A dual mirror telescope for the Cherenkov Telescope Array: The Cherenkov Telescope Array (CTA) will be the world's first open
observatory for very high energy gamma-rays. Around a hundred telescopes of
different sizes will be used to detect the Cherenkov light that results from
gamma-ray induced air showers i... | astro-ph_IM |
Synthetic tracking using ZTF Long Dwell Datasets: The Zwicky Transit Factory (ZTF) is a powerful time domain survey facility
with a large field of view. We apply the synthetic tracking technique to
integrate a ZTF's long-dwell dataset, which consists of 133 nominal 30-second
exposure frames spanning about 1.5 hours, to... | astro-ph_IM |
PESummary: the code agnostic Parameter Estimation Summary page builder: PESummary is a Python software package for processing and visualising data
from any parameter estimation code. The easy to use Python executable scripts
and extensive online documentation has resulted in PESummary becoming a key
component in the in... | astro-ph_IM |
Gaussian phase autocorrelation as an accurate compensator for FFT-based
atmospheric phase screen simulations: Accurately simulating the atmospheric turbulence behaviour is always
challenging. The well-known FFT based method falls short in correctly
predicting both the low and high frequency behaviours. Sub-harmonic
c... | astro-ph_IM |
The Near Infrared Imager and Slitless Spectrograph for the James Webb
Space Telescope -- IV. Aperture Masking Interferometry: The James Webb Space Telescope's Near Infrared Imager and Slitless
Spectrograph (JWST-NIRISS) flies a 7-hole non-redundant mask (NRM), the first
such interferometer in space, operating at 3-5 ... | astro-ph_IM |
On Surface Brightness and Flux Calibration for Point and Compact
Extended Sources in the AKARI Far-IR All-Sky Survey (AFASS) Maps: The AKARI Infrared Astronomical Satellite produced the all-sky survey (AFASS)
maps in the far-IR at roughly arc-minute spatial resolution, enabling us to
investigate the whole sky in the ... | astro-ph_IM |
Waveguide-Type Multiplexer for Multiline Observation of Atmospheric
Molecules using Millimeter-Wave Spectroradiometer: In order to better understand the variation mechanism of ozone abundance in
the middle atmosphere, the simultaneous monitoring of ozone and other minor
molecular species, which are related to ozone d... | astro-ph_IM |
Gaia Early Data Release 3. Building the Gaia DR3 source list --
Cross-match of Gaia observations: The Gaia Early Data Release 3 (Gaia EDR3) contains results derived from 78
billion individual field-of-view transits of 2.5 billion sources collected by
the European Space Agency's Gaia mission during its first 34 months... | astro-ph_IM |
Cleaning radio interferometric images using a spherical wavelet
decomposition: The deconvolution, or cleaning, of radio interferometric images often
involves computing model visibilities from a list of clean components, in order
that the contribution from the model can be subtracted from the observed
visibilities. Th... | astro-ph_IM |
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