The HEASARC is a multi-mission astronomy archive for the EUV, X-ray, and
Gamma ray wave bands. Because EUV, X and Gamma rays cannot reach the
Earth's surface it is necessary to place the telescopes and sensors on
spacecraft. The HEASARC now holds the data from 20 observatories covering
30 years of X-ray and gamma-ray astronomy. Data and software from many of
the older missions were restored by the HEASARC staff.
Examples of these missions include
ROSAT,
ASCA,
BeppoSAX,
Compton GRO,
EUVE,
HEAO 1,
Einstein Observatory (HEAO 2),
EXOSAT, and
Rossi XTE.
The HEASARC scientists
are recognized in their own right as world-class researchers. They provide
the essential ingredient to the HEASARC's success by using the archival
data for their own research.
The HEASARC on-line service is an archive
and database system accessible through the networks that provides rapid access
to the entire HEASARC data holding either directly via ftp, or using the Browse, Argus
and
SkyView interface to search the HEASARC catalogs and access the
data. The analysis tools to work
on these data (typically running under various unix systems) are also
provided via the networks. A High Energy Astrophysics Learning Center provides
education and outreach activities.
The HEASARC is very active in promoting data format standards and has
promoted the Flexible Image Transport
System (FITS)
as a
standard for all level of data. As part of this effort, the FITSIO library of software
has been developed to handle FITS files to be written, read, and
manipulated.
The HEASARC develops multi-mission analysis tools that facilitate the
comparison and analysis of high level data in the archive (e.g. spectral analysis).
The HEASARC will be providing access to a variety of new missions that
have been launched recently or are approved for launch over the coming 5
years. These include: Chandra
(1999), XMM-Newton (1999), HETE-2 (2000), AGILE (2002), INTEGRAL (2002), the Swift Gamma-Ray Burst Explorer (2003),
Astro-E2 (2005), and GLAST (2006). It is interesting
to note that there are many new small gamma ray missions, in contrast to
the past decade which was dominated by Compton GRO. The level of support
HEASARC will provide to these missions will depend on the size of the
mission.
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