Vol. 669
1. Letters to the Editor
Common relativistic results and the near-infrared and X-ray variability of Sgr A* I
The greater than one million photo voltaic plenty black gap on the middle of our Galaxy, Sagittarius A* (Sgr A*), exhibits recurrent, puzzling flares at near-infrared (NIR) and X-ray wavelengths. These flares are thought to originate from blobs (i.e., overdensities) within the innermost accretion disk areas, near the black gap, the place normal relativistic results play a task. This inference comes from the flares’ quick length (roughly half an hour) and brightness.
On this Letter, von Fellenberg et al. analyze 25 NIR flares (detected by the Spitzer satellite tv for pc) and 24 X-ray flares (detected by the Chandra satellite tv for pc) utilizing a principal part evaluation methodology. Regardless of the apparently completely different shapes of the sunshine curve flares, the authors had been capable of finding an underlying widespread form, which is symmetric within the rise and fall. The truth that the flare form is symmetric is essential as a result of it implies that relativistic results play solely a minor position. This could solely occur if we’re viewing the disk at a low inclination angle (~30 deg).
