in this proposal, more time is being requested for scolgan.grtannil we propose 3 by 3 point maps of oi (63 microns) and cii (158 microns) emission, a 9 position map of siii (35 microns), measurement of the feii (26 microns), oh (119 microns), and oi (146 microns) lines, and the 43-170 micron continuum spectrum at the central position of the variable x-ray source grs1758-258. we also propose to complete our 3 by 3 point map of oi (63 microns) from 1e1740.7-2942. both are black hole candidates and the latter is the purported compact, variable source of gamma-ray annihilation emission in the galactic center region. the purpose of these measurements is to determine the state of the ism surrounding these objects and to test whether bondi-hoyle accretion onto an isolated compact object or a binary system could power the observed x-ray and gamma-ray emission. we will accomplish this by probing the effect of the hard (1-100 kev) x-rays on the adjacent gas through measurement of the gas temperature, density, and chemical abundances.
Instrument
LWS01 , LWS02 , LWS04 , SWS02
Temporal Coverage
1997-02-22T16:53:44Z/1997-03-01T12:15:37Z
Version
1.0
Mission Description
The Infrared Space Observatory (ISO) was the worlds first true orbiting infrared observatory. Equipped with four highly-sophisticated and versatile scientific instruments, it was launched by Ariane in November 1995 and provided astronomers world-wide with a facility of unprecedented sensitivity and capabilities for a detailed exploration of the Universe at infrared wavelengths.
European Space Agency, COLGAN et al., 1999, 'INFRARED SPECTROSCOPY OF BLACK HOLE CANDIDATES', 1.0, European Space Agency, https://doi.org/10.5270/esa-1p5mdmp
