XMM-Newton Proposal 02047302

Details XMM-Newton Proposal 02047302 XMM-Newton Proposal 02047302

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003xmm..prop..252m&link_type=abstract

XMM-Newton Proposal ID #02047302

Computer Science

Gx 339-4, Gx 339-4, Xmm-Newton Proposal 02047302

Scientific paper

The ADAF model for stellar-mass Galactic black holes makes a specific prediction: at fractional Eddington mass accretion rates below 0.08, the inner edge of the accretion disk should be truncated at appx. 1 E+4 Schwarzschild radii. Disks truncated at such radii should not be visible in X-rays, as viscous heating is small when the disk is not very deep in the gravitational potential. We request 270 ksec of goodtime to observe GX 339-4 in quiescence with XMM-Newton, to rigorously test the truncated disk prediction at an m-dot-Edd. of 3 E-5 by searching for a disk component in the X-ray spectrum. We will support this observation with IR (Magellan) and radio (ATCA) monitoring observation.

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