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To find and download HEASARC data in the cloud, you can use astroquery.heasarc or download our new tool, hark.

The HEASARC and NuSTAR teams are greatly saddened by the sudden passing of Katja Pottschmidt. Most recently Katja was the lead scientist for the NuSTAR Guest Observer Facility (GOF), a role she had supported for many years. During her science career she worked on many other high energy astrophysics missions and played an integral role in advancing our knowledge of the universe. She was a wonderful colleague and friend and will be keenly missed by all who knew her.

High Energy Astrophysics Observatories

These Web pages describe all the high energy astronomy observatories, or “missions,” ever launched, excluding those solely dedicated to observing the Sun. List of the cosmic microwave background experiments are available from the LAMBDA web site.

The links to the left in the menu-bar are dedicated to the most notable past and present X-ray and gamma-ray astronomy missions. The pages for each mission include:

  • a mission overview,
  • technical information on the instrumentation,
  • a bibliography and
  • a gallery of images.

They also contain a description of the available data if they are present in the HEASARC archive. Information on other satellites carrying either an X-ray or a gamma-ray telescope is available on the All Missions pages.

Other Resources

After the rocket experiments during the 1960s, the first X-ray Earth-orbiting explorers were launched in the 1970s (Uhuru, SAS 3, Ariel5) followed in late 1970s early 1980s by larger missions (HEAO-1, Einstein, EXOSAT, and Ginga). Their scientific outcome, in particular the first X-ray images taken by Einstein, lifted X-ray astronomy into the mainstream of astronomical research. It is now known that nearly every astronomical object from nearby comets to distant quasars emits X-rays. In the 1990s the ROSAT survey detected more than 100,000 X-ray objects, the ASCA mission made the first sensitive measurements of the X-ray spectra from these objects, and RXTE studied their timing properties. The late 1990's launch of the Chandra and XMM-Newton observatories brought high-resolution imaging and high-throughput capability to X-ray astronomy. These missions, combined with Suzaku/Astro-E2, launched in 2005, have opened new and exciting horizons in the journey of the X-ray astronomy exploration.

SAS 2 and Cos B, launched in the 1970s, made the first surveys of the gamma-ray sky, followed by the Compton Gamma-ray Observatory in 1990 and more recently by INTEGRAL in 2002. Blazars, pulsars, and many unidentified sources in our galaxy are the gamma-ray emitters. Fermi (formerly GLAST), the latest gamma-ray observatory, is expected to resolve the diffuse emission and make an all-sky survey with higher angular and energy resolution. The mysterious gamma-ray bursts (GRBs) discovered in the late 1960s by the Vela satellite, were shown to be the most powerful explosions in the Universe and isotropically distributed, thanks to the rapid response capability of BeppoSAX and the all-sky monitoring of CGRO. Swift, launched in November 2004, is providing data on the GRBs prompt emission and their afterglows to allow the most comprehensive study on GRBs and determine their origin.

Further Reading

Books

  • "Astronomy from Space" by John K. Davies, 1997, Praxis Publishing Ltd.
  • "X-ray Detectors" by George Fraser, Cambridge Astrophysics series.