Nondetection of a pulsar-powered nebula in Puppis A and the implications for the nature of the radio-quiet neutron star RX J0822-4300

被引:22
作者
Gaensler, BM
Bock, DCJ
Stappers, BW
机构
[1] MIT, Ctr Space Res, Cambridge, MA 02139 USA
[2] Univ Calif Berkeley, Radio Astron Lab, Berkeley, CA 94720 USA
[3] Astron Inst Anton Pannekoek, NL-1098 SJ Amsterdam, Netherlands
基金
美国国家航空航天局;
关键词
ISM : individual (Puppis A); pulsars : general; radio continuum : ISM; stars : individual (RX J0822-4300); stars : neutron; supernova remnants;
D O I
10.1086/312750
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We report on a deep radio search for a pulsar wind nebula associated with the radio-quiet neutron star RX J0822-4300 in the supernova remnant Puppis A. The well-determined properties of Puppis A allow us to constrain the size of any nebula to less than 30 "; however, we find no evidence for such a source on any spatial scale up to 30'. These nondetections result in an upper limit on the radio luminosity of any pulsar-powered nebula that is 3 orders of magnitude below what would be expected if RX J0822-4300 was an energetic young radio pulsar beaming away from us, and they cast doubt on a recent claim of X-ray pulsations from this source. The lack of a radio nebula leads us to conclude that RX J0822-4300 has properties very different from most young radio pulsars and that it represents a distinct population that may be as numerous, or even more so, than radio pulsars.
引用
收藏
页码:L35 / L38
页数:4
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