Multiwavelength Monitoring of the Spectral and Spatial Evolution of Sgr A* Flares

Details Multiwavelength Monitoring of the Spectral and Spatial Evolution of Sgr A* Flares Multiwavelength Monitoring of the Spectral and Spatial Evolution of Sgr A* Flares

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008cxo..prop.2684b&link_type=abstract

Chandra proposal ID #10620790

Physics

Scientific paper

We propose six 40-ks ACIS-I observations of the Galactic SMBH, SgrA*, with simultaneous NIR, submm, and mm monitoring. Our last two campaigns observed two flares simultaneously in the X-ray, NIR, and submm. We found a possible correlation between the X-ray to NIR flux ratio and the time lag of the submm peak in the two flares that can be explained with an adiabatically expanding relativistic plasma model. This project will test the proposed correlation and the expansion model for flare evolution; test the apparent overabundance of X-ray transients in the central pc; extend our survey of X-ray point sources to fainter fluxes; and measure the proper motion of variable Fe fluorescent features near SgrA* to test whether the SMBH was the irradiator, and hence more luminous in the recent past.

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