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Chandra/HETGS Observations of the Brightest Flare Seen from Sgr A*

  • Authors: M. A. Nowak, J. Neilsen, S. B. Markoff, F. K. Baganoff, D. Porquet, N. Grosso, Y. Levin, J. Houck, A. Eckart, H. Falcke, L. Ji, J. M. Miller, and Q. D. Wang

Nowak et al. 2012 The Astrophysical Journal 759 95.

  • Provider: AAS Journals

Caption: Figure 1.

Top: 2–8 keV, 2–4 keV, and 4–8 keV Sgr A* light curves in 300 s bins from Chandra ObsID 14392, comprised of zeroth-order and ± first-order counts. Time is measured relative to the observation start: 2012 February 9, 06:17:04 UTC. Each light curve is fit with a constant, two Gaussian distributions (for the precursor flares), and a Gumbel distribution. Middle: hardness ratio of the 4–8 keV/2–4 keV rates, shown with the hardness ratio from the fits. Bottom: close-up of the bright flare, highlighting its asymmetric profile.

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