The binary pulsar PSR 1908+00 in NGC 6760

W. T.S. Deich; J. Middleditch; S. B. Anderson; S. R. Kulkarni; T. A. Prince; A. Wolszczan

doi:10.1086/186888

The binary pulsar PSR 1908+00 in NGC 6760

W. T.S. Deich, J. Middleditch, S. B. Anderson, S. R. Kulkarni, T. A. Prince, A. Wolszczan

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Abstract

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 × 10^-6 M_⊙, implying a minimum companion mass of 0.018 M_⊙. 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.

Original language	English (US)
Pages (from-to)	L95-L98
Journal	Astrophysical Journal
Volume	410
Issue number	2 PART 2
DOIs	https://doi.org/10.1086/186888
State	Published - Jun 20 1993

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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title = "The binary pulsar PSR 1908+00 in NGC 6760",

abstract = "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 × 10-6 M⊙, implying a minimum companion mass of 0.018 M⊙. 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.",

author = "Deich, {W. T.S.} and J. Middleditch and Anderson, {S. B.} and Kulkarni, {S. R.} and Prince, {T. A.} and A. Wolszczan",

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T1 - The binary pulsar PSR 1908+00 in NGC 6760

AU - Deich, W. T.S.

AU - Middleditch, J.

AU - Anderson, S. B.

AU - Kulkarni, S. R.

AU - Prince, T. A.

AU - Wolszczan, A.

PY - 1993/6/20

Y1 - 1993/6/20

N2 - 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 × 10-6 M⊙, implying a minimum companion mass of 0.018 M⊙. 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.

AB - 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 × 10-6 M⊙, implying a minimum companion mass of 0.018 M⊙. 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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The binary pulsar PSR 1908+00 in NGC 6760

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