HIGH-SPEED PHOTOMETER OBSERVATIONS OF THE LMC-PULSAR B0540-69

被引：45

作者：

BOYD, PT

VANCITTERS, GW

DOLAN, JF

WOLINSKI, KG

PERCIVAL, JW

BLESS, RC

ELLIOT, JL

NELSON, MJ

TAYLOR, MJ

机构：

[1] NASA,GODDARD SPACE FLIGHT CTR,UNIV SPACE RES ASSOC,GREENBELT,MD 20771

[2] NATL SCI FDN,DIV ASTRON SCI,ARLINGTON,VA 22230

[3] SPACE TELESCOPE SCI INST,BALTIMORE,MD 21218

[4] UNIV WISCONSIN,DEPT ASTRON,MADISON,WI 53706

[5] UNIV WISCONSIN,SPACE ASTRON LAB,MADISON,WI 53706

[6] MIT,DEPT EARTH ATMOSPHER & PLANETARY SCI,CAMBRIDGE,MA 02139

[7] LORAS COLL,DEPT PHYS & ENGN,DUBUQUE,IA 52004

来源：

ASTROPHYSICAL JOURNAL | 1995年 / 448卷 / 01期

关键词：

PULSARS; INDIVIDUAL; (B0540-69); ULTRAVIOLET; STARS;

D O I：

10.1086/175967

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The High-Speed Photometer (HSP) on board the Hubble Space Telescope (HST) observed the 50 ms pulsar B0540-69 in the Large Magellanic Cloud on 1993 August 26 for 1 hr in a passband extending from 1600 Angstrom to 7000 Angstrom. The pulse profile resembles both that in the optical region alone and in the X-ray region. The pulsed fraction in the UV-plus-visible passband is 0.16 +/- 0.02, similar to that measured in the X-ray region. The pulsar frequency on MJD 49225.2557 (start time of the observation) was 19.83448 +/- 0.00002 Hz. When we combine our observed frequency with other published X-ray and optical observations and assume no discontinuities (glitches) in the spin-down rate since 1979, we derive a braking index n = 2.28 +/- 0.02.

引用

页码：365 / 368

页数：4

共 27 条

[1] FAR-ULTRAVIOLET OBSERVATIONS OF THE CRAB-NEBULA USING THE HOPKINS ULTRAVIOLET TELESCOPE [J].