Three Binary Millisecond Pulsars in NGC 6266

Abstract

We present rotational and astrometric parameters of three millisecond pulsars located near the center of the globular cluster NGC 6266 (M62) resulting from timing observations with the Parkes radio telescope. Their accelerations toward the cluster center yield values of the cluster central density and mass-to-light ratio consistent with those derived from optical data. The three pulsars are in binary systems. One (spin period P=5.24 ms) is in a 3.5-day orbit around a companion of minimum mass 0.2 Msun. The other two millisecond pulsars (P=3.59 ms and 3.81 ms) have shorter orbital periods (3.4 hr and 5.0 hr) and lighter companions (minimum mass 0.12 Msun and 0.07 Msun respectively). The pulsar in the closest system is the fifth member of an emerging class of millisecond pulsars displaying irregular radio eclipses and having a relatively massive companion. This system is a good candidate for optical identification of the companion star. The lack of known isolated pulsars in NGC 6266 is also discussed.

9 pages, 5 embedded figures, 2 tables, emulateapj style. Accepted for publication in ApJ on 20 August 2003

References in corpus (21)

• The Parkes Multibeam Pulsar Survey: I. Observing and Data Analysis Systems, Discovery and Timing of 100 Pulsars
• Dynamical Formation of Close Binary Systems in Globular Clusters
• High Resolution X-ray Imaging of a Globular Cluster Core: Compact Binaries in 47Tuc
• Detection of ionized gas in the globular cluster 47 Tucanae
• Chandra Exposes the Core Collapsed Globular Cluster NGC 6397
• An eclipsing millisecond pulsar with a possible main-sequence companion in NGC 6397
• Chandra Study of a Complete Sample of Millisecond Pulsars in 47Tuc and NGC6397
• Where May Ultra-Fast Rotating Neutron Stars Be Hidden?
• The bright optical companion to the eclipsing millisecond pulsar in NGC 6397
• An Extensive Census of HST Counterparts to Chandra X-ray Sources in the Globular Cluster 47 Tucanae. I. Astrometry and Photometry
• Timing of Millisecond Pulsars in NGC 6752: Evidence for a High Mass-to-Light Ratio in the Cluster Core
• PSR J1740-5340: accretion inhibited by radio-ejection in a binary millisecond pulsar in the Globular Cluster NGC 6397
• Optical Detection of a Variable Millisecond Pulsar Companion in 47 Tucanae
• The case of PSR J1911-5958A in the outskirts of NGC 6752: signature of a black hole binary in the cluster core?
• A Millisecond Pulsar Optical Counterpart with Large-Amplitude Variability in the Globular Cluster 47 Tucanae
• The Helium White Dwarf orbiting the Millisecond Pulsar in the halo of the Globular Cluster NGC 6752
• The eclipsing millisecond pulsar PSR J1740-5340 and its red straggler companion
• Black Widow Pulsars: the Price of Promiscuity
• The complex Halpha line profile of the bright companion to PSR J1740-5340 in NGC 6397
• Optical identification of the companion to PSR J1911-5958A, the pulsar binary in the outskirts of NGC 6752
• Eclipsing binary millisecond pulsar PSR J1740-5340 -- evolutionary considerations and observational test

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