A search for optical pulsations from two young southern pulsars

被引：12

作者：

Chakrabarty, D ^{[1
]}

Kaspi, VM

机构：

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

[2] MIT, Dept Phys, Cambridge, MA 02139 USA

来源：

ASTROPHYSICAL JOURNAL | 1998年 / 498卷 / 01期

基金：

美国国家科学基金会;

关键词：

pulsars; individual (PSR B1509-58; PSR B1706-44); stars; neutron;

D O I：

10.1086/311304

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on high-speed optical photometry of the radio positions of two young rotation-powered pulsars. No pulsations were detected from the optical counterpart proposed by Caraveo et al. for PSR B1509-58, with a 2 sigma upper limit on the pulsed fraction of less than 12%, significantly lower than that measured in the five known optical pulsars. Given its low pulsed fraction, high optical luminosity, and significant (8%) chance coincidence probability, we suggest that this candidate is not associated with the pulsar. We also find that the still unidentified optical counterpart of PSR B1706-44 has R greater than or similar to 18 and lies within 3 " of an R = 16.6 star.

引用

页码：L37 / L40

页数：4

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