Scope: SO3 summarizes recent results from high energy astrophysics observations with the main focus on space based satellites and observatories. The session primarily highlights observations from missions such as CHANDRA, XMM-Newton, Suzaku, Swift, FERMI, and Integral which are related to science involving strong gravity environments as found near neutron stars and black holes but also gravity environments on large scales such as clusters of galaxies. The session also includes science programs proposed for future missions. The Marcel Grossmann Meetings take place every three years and bring together a large number of scientists to discuss recent advances in gravitation, general relativity, field theories, experimental tests including relativistic aspects of high energy astrophysics. This is a great opportunity to present and discuss recent astrophysical reseach results with strong implications to general relativity directly with the relevant community.

The deadline for abstract submission: June 1st, 2012 The deadline for early registration (350 Euro) : May 25th, 2012 (400 Euro after) For more info see the updated SO3 schedule above and the check the main Marcel Grossmann meeting home page.

Featured Speakers: Jose Torrejon (University of Alicante, Spain) Fred Baganoff (MIT, USA) Wolfgang Pietsch (MPE, Germany) Andrea Merloni (MPE, Germany) Ivica Miskovicova (Bamberg, Germany) Pietro Ubertini (IASF Rome, Italy) Norbert Schartel (ESA Villafranca, Spain) Norbert Schulz (MIT, USA)

Anticipated Topics (TBC): The Mystery of gCas-Type X-ray Sources The High Energy View of Globular Clusters The Supermassive Black Hole at the Galactic Center X-Ray Sources in Galaxies of the Local Group Stellar Mass Black Holes in the Milky Way X-ray afterglows of Gamma-Ray Bursts Recent Results from Integral Recent Results from XMM-Newton Observations of Black Holes with Chandra Future Hard X-Ray Surveys with eROSITA

Elena Pian INAF, Osservatorio Astronomico di Trieste Via G.B. Tiepolo, 11 I-34131 Trieste, Italy phone: +39-040-3199219 fax: +39-040-309418 email: pian@oats.inaf.it, pian@iasfbo.inaf.it http://www.iasf-bologna.inaf.it/~pian

Norbert S. Schulz Massachusetts Institute of Technology Kavli Institute for Astrophyscis and Space Science 70 Vassar Street, Bldg. 37, NE80-6075 Cambridge, MA 02139, USA phone: 001 617 258 5767 fax: 001 617 253 8084 email: nss@space.mit.edu http://space.mit.edu/~nss

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