we propose 3 by 5 point maps of oi (63 microns) and cii (158 microns) emission, measurement of the fei (24 microns), si (25 microns), feii (26 microns), siii (35 microns), oh (119 microns), oi (146 microns), and co j=14-13 (186 microns) lines, and the 40-196 micron continuum spectrum at the central position of the x-ray source 1e1740.7-2942. this is the purported compact, variable source of gamma-ray annihilation emission in the galactic center region. the purpose of these measurements is to determine whether 1e1740.7-2942 is embedded within a molecular cloud, and to test whether bondi-hoyle accretion onto an isolated compact object could power the observed x-ray and gamma-ray emission. we will accomplish this by probing the effect of the 1-100 kev x-rays on the molecular gas through measurement of the gas temperature, density, and chemical abundances. these measurements will also probe whether a significant fraction of the positrons produced by the source escape the vicinity to power the steady, bulge component of the gamma-ray annihilation emission observed from the galactic center.
Instrument
LWS01 , LWS04 , SWS02
Temporal Coverage
1997-02-22T15:21:28Z/1997-02-22T16:49:38Z
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 THE GREAT ANNIHILATOR', 1.0, European Space Agency, https://doi.org/10.5270/esa-1spo694
