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Related papers: A Binary Millisecond Pulsar in Globular Cluster NG…

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We present an analysis of $23~$yr of pulse arrival times for PSR B1259$-$63. The pulsar is in a binary orbit about its approximately $20~M_{\odot}$ companion LS$~$2883. Our best-fitting timing solution has none of the pulse-number…

Solar and Stellar Astrophysics · Physics 2015-06-17 R. M. Shannon , S. Johnston , R. N. Manchester

Eclipsing pulsar binaries and binaries with a high mass companion are ideal systems for studying and understanding the properties of plasma in magneto-ionic environments. In this work, the first paper of a series, we present MeerKAT…

High Energy Astrophysical Phenomena · Physics 2026-04-03 Jaikhomba Singha , Dongzi Li , Marisa Geyer , Maciej Serylak , Federico Abbate , Senate Lekomola , Robert Main , Andrea Possenti , Amanda Weltman

PSR J1910-5959A is a binary pulsar with a helium white dwarf companion located about 6 arcmin from the center of the globular cluster NGC6752. Based on 12 years of observations at the Parkes radio telescope, the relativistic Shapiro delay…

We present results from a search for pulsars in globular clusters, including the discovery of a new millisecond pulsar in the stellar cluster GLIMPSE-C01. We searched for low frequency radio sources within 97 globular clusters using images…

We present the discovery of a binary companion to the pulsating sdB Feige 48. Using HST/STIS and archival FUSE spectra, we measure a period of 0.376+/-0.003 d and a velocity semi-amplitude of 28.0+/-0.2 km/s. This implies that the companion…

Astrophysics · Physics 2009-11-10 S. J. O'Toole , U. Heber , R. A. Benjamin

We present the timing of the first five millisecond pulsars discovered in the globular cluster Omega Centauri and the discovery of a pulsar with a spin period of 3.68 ms. With a timing baseline of $\sim$3.5 yr we are able to measure the…

High Energy Astrophysical Phenomena · Physics 2023-03-29 S. Dai , S. Johnston , M. Kerr , J. Berteaud , B. Bhattacharyya , F. Camilo , E. Keane

We report the discovery of 1.97 ms period gamma-ray pulsations from the 75 minute orbital-period binary pulsar now named PSR J1653-0158. The associated Fermi Large Area Telescope gamma-ray source 4FGL J1653.6-0158 has long been expected to…

PSR J1518+4904 is a recently discovered 40.9~ms pulsar in an 8.6 day, moderately eccentric orbit. We have measured pulse arrival times for this pulsar over 1.4~yr at several radio frequencies, from which we have derived high precision…

Astrophysics · Physics 2009-10-28 D. J. Nice , R. W. Sayer , J. H. Taylor

The Parkes multibeam pulsar survey has led to the discovery of more than 700 pulsars. In this paper, we provide timing solutions, flux densities and pulse profiles for 180 of these new discoveries. Two pulsars, PSRs J1736-2843 and…

We present a candidate orbital period for the low mass X-ray binary XB 1832-330 in the globular cluster NGC 6652 using a 6.5 hour Gemini South observation of the optical counterpart of the system. Light curves in g' and r' for two LMXBs in…

High Energy Astrophysical Phenomena · Physics 2015-06-03 Megan C. Engel , Craig O. Heinke , Gregory R. Sivakoff , Khaled G. Elshamouty , Peter D. Edmonds

This paper describes the new Globular Clusters GMRT Pulsar Search (GCGPS) survey. This survey aims to find MSPs in the globular clusters (GCs) of the Milky Way using uGMRT. The observations use the uGMRT's Band-4 (550$-$750 MHz) and Band-3…

We present a deep Chandra X-ray Observatory study of the peculiar binary radio millisecond pulsar PSR J1740--5340 and candidate millisecond pulsars (MSPs) in the globular cluster NGC 6397. The X-rays from PSR J1740--5340 appear to be…

High Energy Astrophysical Phenomena · Physics 2014-11-20 Slavko Bogdanov , Maureen van den Berg , Craig O. Heinke , Haldan N. Cohn , Phyllis M. Lugger , Jonathan E. Grindlay

We have conducted a pulsar survey of intermediate Galactic latitudes (15deg < |b| < 5deg) at 20 cm. The survey has been highly successful, discovering 58 new pulsars, eight of which are recycled, in only ~14 days of integration time. One…

Astrophysics · Physics 2007-05-23 R. T. Edwards

The energetic, eclipsing millisecond pulsar J1816+4510 was recently discovered in a low-frequency radio survey with the Green Bank Telescope. With an orbital period of 8.7 hr and minimum companion mass of 0.16 Msun it appears to belong to…

We report the direct measurement of orbital period decay in the double neutron star pulsar system PSR B2127+11C in the globular cluster M15 at the rate of $(-3.95 \pm 0.13) \times 10^{-12}$, consistent with the prediction of general…

Astrophysics · Physics 2009-11-11 B. A. Jacoby , P. B. Cameron , F. A. Jenet , S. B. Anderson , R. N. Murty , S. R. Kulkarni

We review the properties and applications of binary and millisecond pulsars. Our knowledge of these exciting objects has greatly increased in recent years, mainly due to successful surveys which have brought the known pulsar population to…

Astrophysics · Physics 2016-11-23 D. R. Lorimer

We report on intermittent X-ray pulsations with a frequency of 442.36 Hz from the neutron-star X-ray binary SAX J1748.9--2021 in the globular cluster NGC 6440. The pulsations were seen during both 2001 and 2005 outbursts of the source, but…

Astrophysics · Physics 2009-11-13 D. Altamirano , P. Casella , A. Patruno , R. Wijnands , M. van der Klis

We have identified the third known accretion-powered millisecond pulsar, XTE J0929-314, with the Rossi X-Ray Timing Explorer. The source is a faint, high-Galactic-latitude X-ray transient (d >~ 5 kpc) that was in outburst during 2002…

Astrophysics · Physics 2009-11-07 Duncan Galloway , Deepto Chakrabarty , Edward Morgan , Ronald Remillard

We report 4 new pulsars discovered in the core-collapsed globular cluster (GC) NGC 6624 by the TRAPUM Large Survey Project with the MeerKAT telescope. All of the new pulsars found are isolated. PSR J1823$-$3021I and PSR J1823$-$3021K are…

Recycled pulsars are old ($\gtrsim10^{8}$ yr) neutron stars that are descendants from close, interacting stellar systems. In order to understand their evolution and population, we must find and study the largest number possible of recycled…

High Energy Astrophysical Phenomena · Physics 2019-09-04 J. G. Martinez , P. Gentile , P. C. C. Freire , K. Stovall , J. S. Deneva , G. Desvignes , F. A. Jenet , M. A. McLaughlin , M. Bagchi , T. Devine