http://heasarc.gsfc.nasa.gov/ High Energy Astrophysics Science Archive Research Center Tue, 24 Nov 2009 12:15:07 -0500 http://heasarc.gsfc.nasa.gov/Images/objects/heapow/current_thumbnail.jpg http://heasarc.gsfc.nasa.gov/docs/objects/heapow/ http://heasarc.gsfc.nasa.gov/docs/suzaku/news/c5closed.html Suzaku Cycle 5 (Stage 1) is now closed. NASA has received 88 proposals for an oversubscription factor of 3.45 id_20 23 Nov 2009 20:30:00 EST http://www.nasa.gov/topics/universe/features/cobe_20th.html The Cosmic Background Explorer, launched on Nov 18, 1989, discovered evidence to support the Big Bang theory and earned a Nobel Prize for scientists John Mather and George Smoot. id_19 18 Nov 2009 12:00:00 EDT http://heasarc.gsfc.nasa.gov/W3Browse/all/xmmobstars.html This XMM-Newton catalog (from Naze 2009, A+A, 506, 1055) is now available in Browse. id_18 17 Nov 2009 12:00:00 EDT http://www.nasa.gov/topics/universe/features/middle_blackhole.html While astronomers have studied lightweight and heavyweight black holes for decades, the evidence for black holes with intermediate masses has been much harder to come by. Now, astronomers at NASA's GSFC find that an X-ray source in galaxy NGC 5408 represents one of the best cases for a middleweight black hole to date. id_17 15 Nov 2009 12:00:00 EDT http://heasarc.gsfc.nasa.gov/W3Browse/all/ccosmoscat.html This Chandra catalog (from Elvis et al. 2009, ApJS, 184, 158) is now available in Browse. id_16 13 Nov 2009 00:00:00 EDT http://heasarc.gsfc.nasa.gov/W3Browse/all/markarian2.html This catalog of active galaxies (from Petrosian et al. 2007, ApJS, 170, 33) is now available in Browse. id_15 12 Nov 2009 12:00:00 EDT http://heasarc.gsfc.nasa.gov/docs/xanadu/xspec/issues/issues.html XSPEC 12.5.1n updated Nov 5; Fix to the setplot add feature when viewing folded models while using the energies command. id_14 06 Nov 2009 14:49:00 EST http://heasarc.gsfc.nasa.gov/W3Browse/all/intagncat.html This INTEGRAL catalog (from Beckmann et al. 2009, A+A, 505, 417) is now available in Browse. id_13 04 Nov 2009 12:00:00 EDT http://heasarc.gsfc.nasa.gov/docs/heasarc/caldb/caldb_wotsnew.html#xte_20091102 PCA breakdown history and SAA history file updated for the PCA (update 02 November 2009)... id_12 03 Nov 2009 06:44:00 EST http://www.nasa.gov/mission_pages/GLAST/news/star_factories.html Two so-called "starburst" galaxies plus a satellite of our own Milky Way galaxy, representing a new category of gamma-ray-emitting objects, have been detected both by Fermi and ground-based observatories. id_11 02 Nov 2009 12:00:00 EDT http://heasarc.gsfc.nasa.gov/W3Browse/all/galccxonid.html This catalog (from Mauerhan et al. 2009, ApJ, 703, 30) is now available in Browse. id_10 29 Oct 2009 12:00:00 EDT http://www.nasa.gov/mission_pages/GLAST/news/first_year.html During its first year of operations, NASA's Fermi Gamma Ray Space Telescope mapped the extreme sky with unprecedented resolution and sensitivity. id_9 28 Oct 2009 18:00:00 EDT http://heasarc.gsfc.nasa.gov/W3Browse/all/glxsdssqso.html This GALEX catalog (from Trammell et al. 2007, AJ, 133, 1780) is now available in Browse. id_8 28 Oct 2009 12:00:00 EDT http://heasarc.gsfc.nasa.gov/W3Browse/all/cygob2cxo2.html This Chandra catalog (from Wright and Drake 2009, ApJS, 184, 84) is now available in Browse. id_7 21 Oct 2009 00:00:00 EDT http://heasarc.gsfc.nasa.gov/W3Browse/all/m31xmm2.html This XMM-Newton catalog (from Shaw Greening et al. 2009, A+A, 495, 733) is now available in Browse. id_6 20 Oct 2009 12:00:00 EDT http://heasarc.gsfc.nasa.gov/docs/xanadu/xspec/issues/issues.html XSPEC 12.5.1h,i,j,k,l,m updated Oct 16; batch mode script fix, others ... id_5 20 Oct 2009 11:36:00 EDT http://hea-www.harvard.edu/RD/ds9/ Updated 15-Oct-2009; Snow Leopard support, other features... id_4 20 Oct 2009 11:35:00 EDT http://heasarc.gsfc.nasa.gov/docs/integral/inthp_prop_tools.html#ao07start Switch from JEM-X1 to JEM-X2 and 14th SPI annealing. id_3 19 October 2009 http://astronomy2009.esa.int/science-e/www/object/index.cfm?fobjectid=45693 Students from India and South Africa have been selected as the winners of the European Space Agency's 'Be an INTEGRAL astronomer' competition. id_2 18 October 2009 http://heasarc.gsfc.nasa.gov/W3Browse/all/rassusnoid.html This ROSAT catalog (from Rutledge et al. 2000, ApJS, 131, 335) is now available in Browse. id_1 16 Oct 2009 12:00:00 EDT