X-ray detection of the eclipsing millisecond pulsar PSR1957+20
Article Abstract:
X-ray data from the binary millisecond pulsar system PSR1957+20 provided the first opportunity to examine the relativistic wind from a weakly magnetized pulsar. The data indicate that this wind differs markedly from the more strongly magnetized Crab pulsar. These conclusions were based on the Rosat satellite's X-ray observations showing that less than 20% of PSR1957+20's spin-down luminosity could be swept away by electrons and positrons with a limited Lorentz factor.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1992
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Radio emission from the unusual supernova 1998bw and its association with the gamma-ray burst of 25 April 1998
Article Abstract:
Gamma-ray bursts (GRBs) are only just beginning to be understood, and at least one GRB is known to be of extragalactic origin. Supernovae are similar explosive events, but are more numerous. Radio observation of the supernova SN1998bw, which exploded at around the same time and direction as the gamma-ray burst GRB980425, suggest a link between some GRBs and supernovae. It may mean that GRB980425 is a new type of GRB with different optical and radio properties.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
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An association between a long-period pulsar and an old supernova remnant
Article Abstract:
A possible association between pulsars and supernova remnants is reported. Pulsar 2334+61 has a relatively long period of 0.5s while G114.3+0.3 is an old supernova remnant. Radio emission is powered by the pulsar, as indicated by the flat spectral index of -0.36 +/-0.03 and large fractional polarization. These results suggest that the pulsar must have been born with a relatively short period of less than 100 ms.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1993
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