Transient radio emission from SAX J1808.4-3658

被引：42

作者：

Gaensler, BM

Stappers, BW

Getts, TJ

机构：

[1] MIT, Ctr Space Res, Cambridge, MA 02139 USA

[2] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1098 SJ Amsterdam, Netherlands

[3] CSIRO, Australia Telescope Natl Facil, Epping, NSW 1718, Australia

[4] Macquarie Univ, Sch Math Phys Comp & Elect, N Ryde, NSW 2109, Australia

来源：

ASTROPHYSICAL JOURNAL | 1999年 / 522卷 / 02期

基金：

美国国家航空航天局;

关键词：

accretion; accretion disks; binaries : close; pulsars : individual (SAX J1808.4-3658); radio continuum : stars; stars : neutron;

D O I：

10.1086/312238

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on the detection of radio emission from the accretion-powered X-ray millisecond pulsar SAX J1808.4-3658, using the Australia Telescope Compact Array. We detected an similar to 0.8 mJy source at the position of SAX J1808.4-3658 on 1998 April 27, approximately 1 day after the onset of a rapid decline in the X-ray flux; no such source was seen on the previous day. We consider this emission to be related to the radio emission from other X-ray binaries, and it is most likely associated with an ejection of material from the system. No radio emission was detected at later epochs, indicating that if SAX J1808.4-3658 is a radio pulsar during X-ray quiescence, then its monochromatic luminosity must be less than L-1.4GHz similar to 6 mJy kpc(2).

引用

页码：L117 / L119

页数：3

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