juliensimon/tevcat-tev-gamma-ray

TeVCat — TeV Gamma-Ray Source Catalog

Part of the Astronomy Datasets collection on Hugging Face.

Catalog of 322 astronomical sources detected at very high energies (>50 GeV) by ground-based gamma-ray telescopes such as H.E.S.S., MAGIC, and VERITAS. TeVCat is the reference catalog for the ground-based VHE gamma-ray community.

Dataset description

Very-high-energy (VHE) gamma-ray astronomy probes the most extreme environments in the universe: supernova remnants, pulsar wind nebulae, active galactic nuclei, and gamma-ray binaries. TeVCat maintains the canonical list of sources detected above ~50 GeV by imaging atmospheric Cherenkov telescopes and water Cherenkov detectors.

This dataset is sourced from the HEASARC mirror of TeVCat and includes sky coordinates, flux measurements, redshifts, and source classifications.

Quick stats

• 322 TeV gamma-ray sources
• 84 with measured redshift
• 179 with flux measurements

Top source types

• 116 UNID
• 56 HBL
• 32 PWN
• 13 Shell
• 11 FSRQ

Usage

from datasets import load_dataset

ds = load_dataset("juliensimon/tevcat-tev-gamma-ray", split="train")
df = ds.to_pandas()

print(f"{len(df):,} TeV gamma-ray sources")

# Sky map
import matplotlib.pyplot as plt
fig, ax = plt.subplots(subplot_kw={"projection": "aitoff"})
import numpy as np
ra_rad = np.deg2rad(df["ra"].dropna() - 180)
dec_rad = np.deg2rad(df["dec"].dropna())
ax.scatter(ra_rad, dec_rad, s=5, alpha=0.7)
ax.set_title("TeV Gamma-Ray Sky")
ax.grid(True)

Data source

All data comes from TeVCat (Wakely & Horan), accessed via NASA's HEASARC TAP service.

Pipeline

Source code: juliensimon/space-datasets

Related datasets

• gamma-ray-bursts — Fermi GBM Gamma-Ray Burst Catalog
• pulsar-catalog — ATNF Pulsar Catalogue

Citation

@dataset{tevcat_tev_gamma_ray,
  author = {Simon, Julien},
  title = {TeVCat — TeV Gamma-Ray Source Catalog},
  year = {2026},
  publisher = {Hugging Face},
  url = {https://huggingface.co/datasets/juliensimon/tevcat-tev-gamma-ray},
  note = {Based on TeVCat (Wakely & Horan) via NASA HEASARC}
}

License

CC-BY-4.0