| タイトル | The rarity of soft gamma-ray repeaters deduced from reactivation of SGR1806-20 |
| 著者（英） | Horack, J. M.; Green, D.A.; Paciesas, W.S.; Paradijs, J. Van; Preece, R. D.; Briggs, M. S.; Pendleton, G. N.; Fishman, G. J.; Kouveliotou, C.; Norris, J. P.; Meegan, C. A. |
| 著者所属（英） | NASA Marshall Space Flight Center |
| 発行日 | 1994-03-10 |
| 言語 | eng |
| 内容記述 | Only two different types of gamma-ray transient sources are presently known: over one thousand Gamma-Ray Bursters (GRBs) and only three Soft Gamma-Ray repeaters (SGRs). The latter are distinguished by their propensity for recurrent burst behaviour, in contrast to the nonrepeating GRB sources. Recurrent emission from one of the repeaters, SGR1900 + 14, has been detected earlier by the Burst and Transient Source Experiment (BATSE) aboard the Compton Gamma-Ray Observatory. Here we report renewed burst activity from SGR1806 - 20, the most prolific of the three known SGRs. This detection of reactivation of this source has been rapidly followed by identification of an X-ray counterpart, which also coincides with a compact radio source now identified as a plerionic (pulsar-powered) supernova remnant. In combination, these results are leading to a convergence of ideas about the nature of SGRs, which can now be firmly identified as neutron stars. That BATSE has detected no new sources in its two and a half years of operation indicates that SGRs are rare in our Galaxy. |
| NASA分類 | Space Radiation |
| レポートNO | 97N70908
NASA-TM-112164
NAS 1.15:112164 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/541991 |
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