The High Energy Astrophysics Science Archive Research Center (HEASARC) is the primary archive for NASA's (and other space agencies') missions studying electromagnetic radiation from extremely energetic cosmic phenomena ranging from black holes to the Big Bang. Since its merger with the Legacy Archive for Microwave Background Data Analysis (LAMBDA) in 2008, the HEASARC archive contains data obtained by high-energy astronomy missions observing in the extreme-ultraviolet (EUV), X-ray, and gamma-ray bands, as well as data from space missions, balloons, and ground-based facilities that have studied the relic cosmic microwave background (CMB) radiation in the sub-mm, mm and cm bands.

The HEASARC is a member of the NASA Astronomical Virtual Observatories (NAVO) where we work with other NASA archives to ensure comprehensive and consistent VO access to NASA mission datasets. Users may now query the HEASARC's catalogs using VO-enabled services and specialized tools. This page describes how to get to the HEASARC VO-enabled services and provides information on other HEASARC VO activities.


Latest News
  • NICER observations of the X-ray transient MAXI J1807+132: flaring activity (08 Oct 2019)
    NICER has been monitoring the X-ray transient MAXI J1807+132 regularly since September 16. During this time, NICER detected brief, sudden episodes of X-ray brightening which may be analogous to similar flaring behavior seen near the end of the 2017 outburst of the source.
  • Fermi Science Tools Updated (07 Oct 2019)
    The FermiTools (formerly the SAE) were updated to version 1.2.1 on October 4, 2019. This release contains a major update to the implementation of the energy dispersion correction method in the Fermitools. It also includes new tool called gtdrm that estimates the energy dispersion matrix for the energy binning, and fixes a bug which was preventing updated parameter files from installing.
  • M33 Supernova Remnant Catalog (M33SNRXMM) Catalog Released (02 Oct 2019)
    The M 33 Supernova Remnant (SNR) catalog comprises of deep observations of eight fields in M 33. This catalog includes 105 SNRs, detected at the 3-sigma level, of which 54 SNRs are newly detected in X-rays, and three are newly discovered SNRs. This catalog also includes optical emission line ratio data and results from X-ray spectral fitting, based on deep Chandra survey data. This table is now available in Browse and Xamin.
  • XAMIN updated (02 Oct 2019)
    The HEASARC XAMIN archive interface has been updated to version 6.4. This release is a major update to installation utilities, along with other improvements.
  • XSPEC 12.10.1n Patch Released (02 Oct 2019)
    This patch fixes an issue with the Pearson chi-square (pchi) test statistic calculatoin when a spectrum has mulitple models assigned to it.
  • PIMMS updated to Version 4.10a (02 Oct 2019)
    Version 4.10a contains an updated set of effective area curves for XMM-Newton EPIC instruments, suitable for AO-19 proposals

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Last modified: Friday, 21-Jun-2019 15:13:08 EDT

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