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Access to the catalogs and astronomical archives of the HEASARC

Select an interface or start using our keyword search tool below. HEASARC Data Access New Xamin Interfaces Xamin Web InterfaceIntro    Our new faster and more powerful access to HEASARC data Xamin Batch InterfaceDownload    Use Xamin from the command line on your machine Traditional Browse Interfaces   Tips Archive Browse Mission Interface   Our traditional full-featured interface Browse Keyword Search Search-Engine-like query using keywords Browse Table Index List of all tables in the HEASARC database: if we don't have the one you want, ask us to add it Browse Correlation Cross-correlation of full tables Browse Notification Service Get notified when new data is available in the archive Browse Batch InterfaceDownload   Perl scripts (by default these now query Xamin database) CMB Data CMB Missions and Projects Data from space-bourne and suborbital CMB experiments in LAMBDA Specialized forms KML Browse Interface Map Browse sources in Google Sky and other KML services Chandra FOV Search Search for targets within the active fields of view Argus Observation Monitor Search Browse proposal information for observation details and status Swift Data Query Search bursts and observations of the Swift mission Direct Access to HEASARC archive directories HTTP or FTP

Other Resources SkyView - An easy-to-use tool that returns digital images of the sky in any waveband from radio through to gamma rays VAO DataScope - Query catalogs and services from the HEASARC and from around the world using a single form Literature - Links to literature search engines and online versions of refereed journals and science magazines Archive Information New and Updated Databases Deleted Databases Data restoration status of all data sets available from the HEASARC Bibliography/archive cross-reference status of HEASARC data sets with ADS-listed publications Science results that used HEASARC data The HEASARC Cookbook - how to find, download, and analyze data Open Archive Policy - find out how you can integrate HEASARC resources into your Web site Documentation for the HEASARC Database System - General description of the database system and a description of the TDAT format used to serialize data and metadata for HEASARC catalogs

Latest News Chandra X-Ray Point Source Catalog for the Old Open Cluster Collinder 261 (15 Jun 2017) The catalog of 151 X-ray sources detected in a 53.8 ks observation of the 7-Gyr old open cluster Cr 261 by the Chandra ACIS instrument (from Vats & van den Berg 2017, ApJ, 837, 130) is now available in Browse and Xamin, as is the associated list of 135 optical counterpart candidates of 98 of these X-ray sources. A New X-Ray Observatory is Launched: the Hard X-ray Modulation Telescope (HXMT) (15 Jun 2017) The Chinese X-ray observatory, HXMT (also known as Insight), was launched earlier today (3:00 UTC) on a Long March 4B rocket. This mission will perform the most sensitive all-sky survey to date in the hard X-ray (20-250 keV) energy band. It also has soft and medium X-ray (1 - 30 keV) detectors for pointed observations of such objects as X-ray binaries, AGN, SNRs, soft gamma repeaters, and clusters of galaxies. Congratulations to our Chinese colleagues! NuSTAR CALDB Update (14 Jun 2017) The NuSTAR CALibration DataBase was updated on June 14, 2017 (CALDB version 20170614) This updates the NuSTAR clock correction file to version 72, valid through 2017-06-14. NICER Installed on ELC2 (14 Jun 2017) As of June 14, NICER is installed on the ISS Express Logistics Carrier 2 Site 7, and power up of the instrument has begun. Happy 5th Birthday to NuSTAR! (13 Jun 2017) The Nuclear Spectroscopic Telescope Array (NuSTAR) spacecraft was launched on a Pegasus XL rocket dropped from a Lockheed L-1011 "TriStar" aircraft flying over the Pacific Ocean near the Kwajalein Atoll on June 13, 2012. Since then it has made over 2100 hard X-ray observations in science mode which have yielded (to date) hundreds of refereed and other publications. ROSAT All-Sky Survey and Sloan Digital Sky Survey DR7 Galaxy Clusters (13 Jun 2017) This catalog of the X-ray emission (or lack thereof) found in the RASS at the positions of 64,646 candidate galaxy clusters optically identified in the SDSS DR7 (from Wang et al. 2014, MNRAS, 439, 611) is now available in Browse and Xamin. [What is this?]