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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 Xamin Interfaces Xamin Web InterfaceIntro    Our faster and more powerful access to HEASARC data Xamin Batch InterfaceDownload    Use Xamin from the command line on your machine Browse Interfaces   Tips Archive Browse Mission Interface   Our full-featured interface Browse Table Index Listing of all tables in the HEASARC database Browse Correlation of 2 Tables Correlation of more than 2 tables is available in Xamin Browse Notification Service Get notified when new data is available in the archive Use Xamin if you wish to monitor any query 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 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 Command-line downloads Describes using our download script as well as wget and curl. Using HTTPS If there is a table you'd like added to the HEASARC let us know.

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 MAXI/GSC 7-Year High and Low Galactic Latitude Source Catalog (3MAXI) (13 Apr 2021) This catalog of 221 low galactic latitude X-ray sources and 686 high galactic latitude X-ray sources detected by the MAXI Gas Slit Camera (GSC) in its first 7 years of operations (combining Hori et al. 2018, ApJS, 207, 36 and Kawamuro et al. 2018, ApJS, 238, 33) is now available in Browse and Xamin. NICER Finds X-ray Boosts in the Crab Pulsar's Radio Bursts (08 Apr 2021) A global science collaboration using data from NASA's Neutron star Interior Composition Explorer (NICER) telescope has discovered X-ray surges accompanying radio bursts from the pulsar in the Crab Nebula. The finding shows that these giant radio pulses release far more energy than previously suspected. NICER follow-up of SRGA J181414.6-225604 (08 Apr 2021) NICER followup observations of a possible new X-ray transient discovered by the SRG observatory detected a source showing a peak in soft X-rays and a hard non-thermal tail at higher energies. No evidence for temporal variability was seen. Viewing tool updated (07 Apr 2021) The Swift pole constraints have been updated in the Viewing tool. The revised coefficients extrapolate the trend for the next two years. NICER Virtual Data Analysis and Science Meeting: Registration Open (31 Mar 2021) Registration is now open for a virtual data analysis workshop, which will be held the week of May 10, 2021, on Monday, Tuesday, Thursday and Friday, 9 am to 1 pm. You can register using the workshop registration form. NICER and Swift observations of the new outburst of MAXI J1820+070 (30 Mar 2021) NICER and Swift observations of the black hole X-ray transient MAXI J1820+070 near the start of its outburst found an X-ray luminosity of only 1e33 ergs/s. This is one of the lowest luminosities at which the start of a black hole-X-ray transient outburst has been caught in X-rays. [What is this?]