Simultaneous X-Ray Monitoring of Sagittarius A*

Details Simultaneous X-Ray Monitoring of Sagittarius A* Simultaneous X-Ray Monitoring of Sagittarius A*

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cxo..prop..902g&link_type=abstract

Chandra Proposal ID #03601019

Computer Science

Chandra Proposal Id #03601019

Scientific paper

In Cycle 1, we discovered the first clear evidence of X-ray emission from Sagittarius A* (Sgr A*), the compact nonthermal radio source associated with the massive black hole at the dynamical center of the Milky Way. In Cycle 2, we reported the first detection of large-amplitude X-ray variability of Sgr A*. We propose 4x12.5-ks (50-ks total) GTO observations with ACIS-I spanning a reported 106-day radio cycle. Simultaneous monitoring with the VLA, OVRO, SMA, and VLBA will be proposed: 1) to search for correlated variations and lags between the wavebands and 2) to produce the first simultaneous broad-band spectra of Sgr A* at multiple epochs in order to constrain the emission processes and the sizes and structures of the emitting regions.

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