An Extremely Luminous Panchromatic Outburst from the Nucleus of a Distant Galaxy.

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Bibliographic Details
Title:	An Extremely Luminous Panchromatic Outburst from the Nucleus of a Distant Galaxy.
Authors:	Levan, A. J., Tanvir, N. R., Cenko, S. B., Perley, D. A., Wiersema, K., Bloom, J. S., Fruchter, A. S., Postigo, A. de Ugarte, O'Brien, P. T., Butler, N., van der Horst, A. J., Leloudas, G., Morgan, A. N., Misra, K., Bower, G. C., Farihi, J., Tunnicliffe, R. L., Modjaz, M., Silverman, J. M., Hjorth, J.
Source:	Science (pre-March 2025). 7/8/2011, Vol. 333 Issue 6039, p199-202. 4p.
Subjects:	Gamma ray bursts, Galactic nuclei, Gamma ray spectrometry, Proton-induced gamma ray emission, Supermassive black holes, Electromagnetic waves, Stellar luminosity function
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. [ABSTRACT FROM AUTHOR]
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Database:	Psychology and Behavioral Sciences Collection

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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. [ABSTRACT FROM AUTHOR]
ISSN:	00368075
DOI:	10.1126/science.1207143