HEAO 1 A2: Catalog of High-Energy X-ray Point Sources

A catalog of high-energy X-ray sources observed by the HEAO 1 A-2 experiment. The data was collected from three detectors covering energy ranges from 0.15 to 15 KeV during targeted pointings from November 15, 1977, to January 9, 1979. This service is provided by NASA's HEASARC.

Use Cases

• Identify and catalog high-energy X-ray point sources based on observations from the HED, MED, and LED detectors.
• Analyze the spectral properties of celestial objects across the 0.15-15 KeV energy range.
• Study point source sensitivity and characteristics using data from an experiment originally designed for diffuse background surveys.

Strengths

• Data collected from three distinct detectors covering complementary energy ranges (0.15-3 KeV, 1.5-15 KeV, and 3-6 KeV).
• Observations cover a defined period of targeted pointings from day 319, 1977 to day 739, 1979.
• Originates from a NASA mission and is served by the authoritative HEASARC archive.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data is historical, collected in the late 1970s; freshness should be verified for modern applications.

Provenance

Source

National Aeronautics and Space Administration (NASA) HEASARC

Collection Method

Observations from the three detectors (HED, MED, LED) of the HEAO 1 A-2 experiment during targeted point maneuvers.

Time Range

November 15, 1977 to January 9, 1979

Freshness

Last updated 2026-03-13 16:53:37.288573; freshness should be verified.