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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 (Currently unavailable due to updates) 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 Viewing tool updated (17 Sep 2018) The Swift pole constraints have been updated in the Viewing tool. The revised coefficients extrapolate the trend for the next year. The Viewing tool now also can report a "preferred" visibility window for NICER observations, which has a Sun angle constraint of 60-180 degrees. (The nominal visibility window for NICER observations is unchanged.) PIMMS updated to Version 4.9 (17 Sep 2018) Version 4.9 contains updates for NICER rate simulations and updated calibrations for XMM.... XAMIN updated (17 Sep 2018) The HEASARC XAMIN archive interface has been updated to version 5.3.1. This release includes improvements to VOTable output and other performance improvements Chandra CALDB 4.8.0 installed at the HEASARC (14 Sep 2018) CalDB 4.8.0 is now installed and available at the HEASARC. Chandra 4.8.0 was released by the CXC on June 28, 2018. Swift CALDB Data updated (14 Sep 2018) The Swift SC clock correction has been updated (CALDB update version 20180911). The Million Quasars Catalog v5.3 available (13 Sep 2018) The Million Quasars Catalog (MILLIQUAS) has been updated to version 5.3 (12 September 2018). It contains 618,097 type-I QSOs and AGN, including sources from SDSS-DR14Q and LAMOST DR4, and ~1,320,000 high-confidence (80%+ likelihood) quasar candidates. This table is now available in Browse and Xamin. [What is this?]