Authors: Roberto Abuter, António Amorim, M. Bauböck, Frederick K. Baganoff, Jean-Phillipe Berger, Hope Boyce, H. Bonnet, Wolfgang Brandner, Yann Clénet, Ric Davies, P. T. de Zeeuw, Jason Dexter, Y. Dallilar, A. Drescher, Andreas Eckart, Frank Eisenhauer, Giovanni G. Fazio, N. M. Förster Schreiber, K. Foster, Charles F. Gammie, Paulo J. V. Garcia, Feng Gao, Eric Gendron, Reinhard Genzel, Gabriele Ghisellini, Stefan Gillessen, Mark Gurwell, Maryam Habibi, Daryl Haggard, C. J. Hailey, Fiona A. Harrison, Xavier Haubois, G. Heißel, Th. Henning, Stefan Hippler, Joseph L. Hora, Matthew Horrobin, A. Jiménez-Rosales, Lieselotte Jochum, Laurent Jocou, Andreas Kaufer, Pierre Kervella, Sylvestre Lacour, V. Lapeyrère, J.-B. Le Bouquin, Pierre Léna, Patrick Lowrance, Dieter Lutz, Sera Markoff, K. Mori, Mark Morris, J. Neilsen, M. Nowak, Thomas Ott, Thibaut Paumard, Karine Perraut, Guy Perrin, G. Ponti, Oliver Pfuhl, Sebastian Rabien, G. Rodríguez-Coira, Jinyi Shangguan, T. Taro Shimizu, Silvia Scheithauer, Howard A. Smith, Julia Stadler, Daniel Stern, Odele Straub, Christian Straubmeier, Eckhard Sturm, Linda J. Tacconi, F. Vincent, S. D. von Fellenberg, Idel Waisberg, Felix Widmann, Ekkehard Wieprecht, Erich Wiezorrek, Steven P. Willner, G. Witzel, Julien Woillez, S. Yazici, André Young, S. Zhang, Gérard Zins
Venue: Astronomy & Astrophysics
Type: Publication
Abstract: We report the time-resolved spectral analysis of a bright near-infrared and moderate X-ray flare of Sgr A*. We obtained light curves in the $M$-, $K$-, and $H$-bands in the mid- and near-infrared and in the $2-8~\mathrm{keV}$ and $2-70~\mathrm{keV}$ bands in the X-ray. The observed spectral slope in the near-infrared band is $\nu L_\nu\propto \nu^{0.5\pm0.2}$; the spectral slope observed in the X-ray band is $\nu L_\nu \propto \nu^{-0.7\pm0.5}$. We tested synchrotron and synchrotron self-Compton (SSC) scenarios. The observed near-infrared brigh...
(read more)
Topics: 
Astrophysics
Astronomy
Loading (it may take a couple of seconds)...
Loading (it may take a couple of seconds)...