Dear Colleague The next Eleventh Marcel Grossmann Meeting on General Relativity, will be held in July 23-29, 2006 in Berlin, Germany. The meeting takes place every three years and brings 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. You will find some basic information about the meeting and the meeting site on "http://www.icra.it/MG/mg11/". More information specifically about deadlines will appear when available. The meeting includes plenary sessions and parallel sessions. Norbert S. Schulz (MIT, Cambridge, USA) and Elena Pian (INAF, Trieste, Italy) will co-chair the parallel session: "ASTROPHYSICS OF NEUTRON STARS AND BLACK HOLES: OBSERVATIONS -High Energy Astrophysics Space Missions" The session will take place during 2 half-days and will include both invited and contributed talks. Several invited speakers have already agreed to review some recent critical progress in the galactic and extragalactic domain. We here would like to solicit oral contributions from the community. If you are interested in presenting recent results of space-based observations of high energy sources, please send a title and abstract to Norbert Schulz or Elena Pian (see e-mail addresses below). A web-page of the session has been posted at http://space.mit.edu/~nss/mg11.html We look forward seeing you in Berlin. Best Regards Norbert S. Schulz and Elena Pian -------------------------------------------- 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@ts.astro.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