A giant periodic flare from the soft gamma-ray repeater SGR1900+14

Article Abstract:

The four known soft gamma-ray repeaters (SGRs) seem to be associated with radio supernova remnants, suggesting that they are young. A quiescent soft x-ray source has been determined that could be the neutron start SGR1900+14, first identified in 1979. SGR1900+14 was shown to emerge from a long dormant phase in May 1998, and it emitted an intense giant flare in August. This event was characterized by hard gamma-rays and may have been induced by a major disruption of the neutron star's crust.

Author: Hurley, K., Cline, T., Palmer, D., Marshall, F., Aptekar, R., Mazets, E., Bartelmy, S., Butterworth, P., Golenetskii, S., Il'Inski, V., Frederiks, D., McTierna, J., Gold, R., Trombka, J.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
Solar flares, Neutron stars

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A new gamma-ray burst classification scheme from GRB 060614

Article Abstract:

Gamma-ray bursts (GRBs) are known to come in two duration classes, namely, long duration bursts that originate from star-forming regions in galaxies and short duration bursts that originate in regions within their host galaxies that have lower-star formation rates. It is reported that the bright GRB060614 gamma-ray burst does not fit into either class and is one probably one of the first-established members of an emerging class of events that includes both short- and long-duration GRBs.

Author: Gehrels, N., Sakamoto, T., Kouveliotou, C., Kaneko, Y., Markwardt, C.B., Sarazin, C.L., Barthelmy, S.D., Nakar, E., Norris, J.P., Roming, P.W.A., Nousek, J.A., Page, M., Meszaros, P., Parsons, A.M., Woosley, S.E., Palmer, D.M., Granot, J., Brien, P.T.O., Schady, P., Stamatikos, M.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2006
Science & research, Research, Black holes (Astronomy), Star formation

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Subjects list: Observations, Gamma rays
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