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 world's 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.
