The HEASARC is running nominally. If you are trying to download a lot of data, please consider using the AWS cloud copy of most HEASARC data. As an alternative to locally installing HEASoft, SciServer is an online platform which has the software installed and data available when you login.
Questions (and Answers) About Cosmic High-Energy (X-ray & Gamma-Ray) Astronomy
How are the X-ray and gamma-ray energy bands defined?What are the energy bands for the other various types of electromagnetic radiation?
How do the sensitivity & angular resolution of current X-ray telescopes compare with previous ones?
What kinds of cosmic objects are X-ray emitters?
What are the brightest objects in the X-ray sky?
How do the numbers of catalogued X-ray & gamma-ray sources compare with other energies?
How much X-ray and gamma-ray data are in the HEASARC's archive?
Please send information concerning dates/deadlines not currently included on this page and/or corrections to:
- Stephen.A.Drake @ nasa.gov
Web page maintainer: Stephen A. Drake