INTEGRAL ISGRI: 499 High-Energy Celestial Sources Catalog

INTEGRAL satellite observations over 4 years detected 499 sources of soft gamma-ray and X-ray emission above 20 keV. The catalog, created by NASA HEASARC in 2011, provides precise coordinates, source classifications, and parameters like absorption, distances, and pulsation periods. It includes around 250 sources that were new or unknown at these energies at the time of discovery.

Use Cases

• Classifying high-energy celestial objects based on provided source classifications and parameters.
• Analyzing spatial distribution of sources in the Milky Way based on Galactic plane projections mentioned in the description.
• Testing theoretical correlations for high-energy objects using listed parameters like column density and pulsation periods.
• Investigating characteristics of High-Mass X-ray Binaries (HMXBs) based on listed companion types and modulation studies.

Strengths

• Contains 499 distinct high-energy sources detected over a 4-year observational period.
• Includes precise coordinates and error radii described as the most precise available in the literature at the time.
• Provides classifications for all sources and lists parameters like absorption, distances, and periods when available.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is known (499), but the specific number of rows with complete parameter data is unknown.
• Last updated 2026-03-13 17:19:10.716438; freshness should be verified as the underlying data is from 2011.

Provenance

Source

NASA HEASARC, based on CDS catalog J/A+A/467/585.

Collection Method

Observations from the INTEGRAL Soft Gamma-ray Imager (ISGRI) satellite instrument.

Time Range

Covers the first 4 years of INTEGRAL/ISGRI observations.

Freshness

Catalog created in April 2011; metadata last updated in March 2026.

Geography

Celestial, focusing on the Milky Way galaxy.