THE BINARY PULSAR PSR-1908+00 IN NGC-6760

被引：13
作者：
DEICH, WTS
MIDDLEDITCH, J
ANDERSON, SB
KULKARNI, SR
PRINCE, TA
WOLSZCZAN, A
机构：
[1] PENN STATE UNIV,DEPT ASTRON & ASTROPHYS,UNIV PK,PA 16802
[2] LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545
来源：
ASTROPHYSICAL JOURNAL | 1993年 / 410卷 / 02期
关键词：
BINARIES; GENERAL; PULSARS; INDIVIDUAL; (PSR-1908+00); STARS; NEUTRON;
D O I：
10.1086/186888
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present orbital parameters of the 3.6 ms binary pulsar 1908 + 00 in the globular cluster NGC 6760. The orbital period is 3.4 hr, and the mass function is 3 x 10(-6) M., implying a minimum companion mass of 0.018 Me.. The companion is probably degenerate; and if it is hydrogen, it is close to overflowing its Roche lobe. The only other millisecond binary radio pulsar systems with orbital period <10 hr and mass function below 10(-3) M. are the eclipsing pulsars 1957 + 20 and 1744-24A, and the very low mass binary 0021 - 72J. These pulsars are ablating their companions and may be the progenitors of isolated millisecond pulsars. PSR 1908 + 00 shows no evidence for long-duration eclipses as are seen in 1744-24A, but short-duration eclipses as in 1957 + 20 are not excluded.
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页码：L95 / L98
页数：4
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