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An extremely luminous panchromatic outburst from the nucleus of a distant galaxy

By A. J. Levan, Nial R. Tanvir, S. Bradley Cenko, D. A. Perley, K. Wiersema, Joshua S. Bloom, Andrew S. Fruchter, A. de Ugarte Postigo, P. T. O'Brien, N. R. Butler, A. J. van der Horst, G. Leloudas, A. N. Morgan, K. Misra, G. C. Bower, J. Farihi, R. L. Tunnicliffe, M. Modjaz, J. M. Silverman, J. Hjorth, C. C. Thöne, A. Cucchiara, J. M. C. Ceron, A. J. Castro-Tirado, J. A. Arnold, Michael Bremer, J. P. Brodie, Timothy C. Carroll, Michael C. Cooper, P. A. Curran, Roc M. Cutri, J. Ehle, D. Forbes, J. Fynbo, J. Gorosabel, J. Graham, D. I. Hoffman, S. Guziy, P. Jakobsson, A. P. Kamble, T. Kerr, M. M. Kasliwal, Chryssa Kouveliotou, D. Kocevski, N. M. Law, Peter E. Nugent, E. O. Ofek, D. Poznanski, R. M. Quimby, E. Rol, A. J. Romanowsky, R. Sanchez-Ramirez, S. Schulze, Navtej Singh, L. van Spaandonk, R. L. C. Starling, Richard Strom, José Cayetano Tello, O. Vaduvescu, P. J. Wheatley, Ralph Antoine Marie Joseph Wijers, J. M. Winters and D. Xu

Abstract

Variable x-ray and γ-ray emission is characteristic of the most extreme physical processes in the universe. We present multiwavelength observations of a unique γ-ray–selected transient detected by the Swift satellite, accompanied by bright emission across the electromagnetic spectrum, and whose properties are unlike any previously observed source. We pinpoint the event to the center of a small, star-forming galaxy at redshift z = 0.3534. Its high-energy emission has lasted much longer than any γ-ray burst, whereas its peak luminosity was ∼100 times higher than bright active galactic nuclei. The association of the outburst with the center of its host galaxy suggests that this phenomenon has its origin in a rare mechanism involving the massive black hole in the nucleus of that galaxy

Topics: QB
Publisher: American Association for the Advancement of Science
Year: 2011
DOI identifier: 10.1126/science.1207143
OAI identifier: oai:wrap.warwick.ac.uk:39445
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