======================================================================== G C N E W S * Newsflash * - The Newsletter for Galactic Center Research - gcnews@mpifr-bonn.mpg.de http://www.mpifr-bonn.mpg.de/gcnews ======================================================================== Vol. 12, No. 3 Aug 6, 2000 We apologize for the long delay since the last Newsflash. The vacation season resulted in a rather low flux of abstracts (and our own vacations interfered with the output)... Recently submitted papers: -------------------------- 1) To Probe a Black Hole (Gruzinov, ApJL) 2) An X-ray Binary Model for the Galactic Center Source IRS 13E (Pittard, A&A) ------------------------------------------------------------------------ Email : andrei@ias.edu Title : To Probe a Black Hole Author(s): Andrei Gruzinov Institute: Institute for Advanced Study, School of Natural Sciences, Princeton, NJ 08540 Paper : ApJL, to be submitted EPrint : astro-ph/0007080 Abstract: We show how an idealized high-frequency VLBI can probe the metric of nearby supermassive black holes. No quantitative assumptions about plasma dynamics are used in the suggested diagnostic, which is based on strong-field lensing. ------------------------------------------------------------------------ Email : rfc@physics.arizona.edu Title : An X-ray Binary Model for the Galactic Center Source IRS 13E Author(s): R.F. Coker and J.M. Pittard Institute: (1) Department of Physics and Astronomy,, University of Leeds, Leeds LS2 9JT UK Paper : A&A, in press EPrint : astro-ph/0008091 Abstract: We present several models for IRS 13E, an infrared, mm and X-ray source in the Galactic Center. Our favored interpretation is that of an early-type binary with strong colliding winds emission. This naturally explains the observed X-ray count rate and the strong IR emission lines, and has a distinct advantage over competing hypotheses based upon a single star or BH system. ------------------------------------------------------------------------ (Older versions of the Newsflash can be found at the gcnews web-page) ======================================================================== Edited by Angela Cotera Heino Falcke & Sera Markoff (cotera@ipac.caltech.edu) (hfalcke,smarkoff@mpifr-bonn.mpg.de) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - For Abstract submission please send the (La)Tex file of your paper to gcnews@mpifr-bonn.mpg.de ========================================================================