Simultaneous Gamma-Ray to Sub-Millimeter Monitoring of Sagittarius A*

Details Simultaneous Gamma-Ray to Sub-Millimeter Monitoring of Sagittarius A* Simultaneous Gamma-Ray to Sub-Millimeter Monitoring of Sagittarius A*

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004cxo..prop.1826b&link_type=abstract

Chandra Proposal ID #06621003

Physics

Chandra Proposal Id #06621003

Scientific paper

We propose five 50-ks ACIS-I observations of SgrA*. Chandra detects 1.3 +/- 0.4 X-ray flares per day from SgrA*. VLT and Keck detect 2-6 IR flares per day. Chandra and VLT have detected one correlated X-ray/IR flare; more flares are needed to constrain the broad-band spectrum. Simultaneous monitoring with Chandra, HESS, VLT, Keck, and SMA are proposed to search for correlated variations between X-ray, gamma-ray, IR, and sub-mm to characterize the emission process. Simultaneous multiwavelength monitoring provides the only means to discriminate between synchrotron and SSC origins for the Sgr A* flares. HESS has discovered a TeV point source within 30" of Sgr A* (confidential). All known TeV point sources are variable, so simultaneous Chandra and HESS monitoring will identify the TeV source.

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