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abstract |
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(Abridged) This proposal is a continuation of the on-going (AO4--AO5) program of making a several Msec-long series of multiple latitude scans of selected regions of the Galactic disk. Even although our AO4 and AO5 accepted proposals are not yet completed, our analysis of first 4 Msec of already performed observations showed that this technique of studying the extended/diffuse high-energy emission of the Galaxy is very successful in minimizing systematic errors associated with the SPI and ISGRI detectors background variations and thus providing a clean emission spectrum of the Galactic disk, limited only by the photon counting statistics. In this proposal we selected three regions in the Galaxy for dissections -- l~40,22.5, -30 -- which will be complimentary to the already performed observations of the inner Galaxy |
yWe propose to obtain up to 6 deep exposures of a black hole transient in outburst, as part of a global, simultaneous multi-wavelength campaign. Each exposure should be 130 ksec in duration (1/2 orbit). Curvature and breaks in the high energy spectra of black holes are essential for comparing gamma-ray and X-ray states, and for revealing the relationship between hard X-ray emission and jets. It is now clear that deep exposures are needed to reveal diagnostic curvature in the high energy spectra of black holes. To ease the burden of these observations on INTEGRAL and the community, and to generate broad interest in this science, we request that the data be made public immediately. |
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