Giant radio pulses from a millisecond pulsar

被引：127

作者：

Cognard, I ^{[1
]}

Shrauner, JA ^{[1
]}

Taylor, JH ^{[1
]}

Thorsett, SE ^{[1
]}

机构：

[1] PRINCETON UNIV,DEPT PHYS,PRINCETON,NJ 08544

来源：

ASTROPHYSICAL JOURNAL | 1996年 / 457卷 / 02期

基金：

美国国家科学基金会;

关键词：

pulsars; individual (PSR B1937+21);

D O I：

10.1086/309894

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have observed 1.7 x 10(6) individual pulses from the millisecond pulsar PSR B1937 +/- 21. About one pulse in 10,000 has more than 20 times the mean ''pulse-on'' flux density, and individual pulses as large as 300 times the average were observed. Comparable behavior has previously been observed only for the Crab pulsar. Giant pulses from PSR B1937 +/- 21 are seen in both the main pulse and interpulse components, and their amplitude distribution has roughly a power-law shape. Strong pulses differ greatly from the average emission: they are narrower, systematically delayed by some 40-50 mu s, and many are nearly 100% circularly polarized. In addition to their potential importance for elucidating the physics of the emission region, the giant pulses may be useful for high precision timing measurements.

引用

页码：L81 / L84

页数：4

共 20 条

[1] PULSE-HEIGHT DISTRIBUTION FOR NP-0532 [J].