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We report the discovery of PSR J0031$-$5726 in the GaLactic and Extragalactic All-sky MWA eXtended imaging survey at a Galactic latitude of $b \approx -60^\circ$. The pulsar exhibits both sporadic, extremely bright pulses reminiscent of…

Millisecond pulsars, old neutron stars spun-up by accreting matter from a companion star, can reach high rotation rates of hundreds of revolutions per second. Until now, all such "recycled" rotation-powered pulsars have been detected by…

High Energy Astrophysical Phenomena · Physics 2012-11-27 H. J. Pletsch , L. Guillemot , H. Fehrmann , B. Allen , M. Kramer , C. Aulbert , M. Ackermann , M. Ajello , A. de Angelis , W. B. Atwood , L. Baldini , J. Ballet , G. Barbiellini , D. Bastieri , K. Bechtol , R. Bellazzini , A. W. Borgland , E. Bottacini , T. J. Brandt , J. Bregeon , M. Brigida , P. Bruel , R. Buehler , S. Buson , G. A. Caliandro , R. A. Cameron , P. A. Caraveo , J. M. Casandjian , C. Cecchi , Ö. Celik , E. Charles , R. C. G. Chaves , C. C. Cheung , J. Chiang , S. Ciprini , R. Claus , J. Cohen-Tanugi , J. Conrad , S. Cutini , F. D'Ammando , C. D. Dermer , S. W. Digel , P. S. Drell , A. Drlica-Wagner , R. Dubois , D. Dumora , C. Favuzzi , E. C. Ferrara , A. Franckowiak , Y. Fukazawa , P. Fusco , F. Gargano , N. Gehrels , S. Germani , N. Giglietto , F. Giordano , M. Giroletti , G. Godfrey , I. A. Grenier , M. -H. Grondin , J. E. Grove , S. Guiriec , D. Hadasch , Y. Hanabata , A. K. Harding , P. R. den Hartog , M. Hayashida , E. Hays , A. B. Hill , X. Hou , R. E. Hughes , G. Johannesson , M. S. Jackson , T. Jogler , A. S. Johnson , W. N. Johnson , J. Kataoka , M. Kerr , J. Knödlseder , M. Kuss , J. Lande , S. Larsson , L. Latronico , M. Lemoine-Goumard , F. Longo , F. Loparco , M. N. Lovellette , P. Lubrano , F. Massaro , M. Mayer , M. N. Mazziotta , J. E. McEnery , J. Mehault , P. F. Michelson , W. Mitthumsiri , T. Mizuno , M. E. Monzani , A. Morselli , I. V. Moskalenko , S. Murgia , T. Nakamori , R. Nemmen , E. Nuss , M. Ohno , T. Ohsugi , N. Omodei , M. Orienti , E. Orlando , F. de Palma , D. Paneque , J. S. Perkins , F. Piron , G. Pivato , T. A. Porter , S. Raino , R. Rando , P. S. Ray , M. Razzano , A. Reimer , O. Reimer , T. Reposeur , S. Ritz , R. W. Romani , C. Romoli , D. A. Sanchez , P. M. Saz Parkinson , A. Schulz , C. Sgro , E. do Couto e Silva , E. J. Siskind , D. A. Smith , G. Spandre , P. Spinelli , D. J. Suson , H. Takahashi , T. Tanaka , J. B. Thayer , J. G. Thayer , D. J. Thompson , L. Tibaldo , M. Tinivella , E. Troja , T. L. Usher , J. Vandenbroucke , V. Vasileiou , G. Vianello , V. Vitale , A. P. Waite , B. L. Winer , K. S. Wood , M. Wood , Z. Yang , S. Zimmer

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 present two years of Neutron star Interior Composition Explorer (NICER) X-ray observations of three energetic rotation-powered millisecond pulsars (MSPs): PSRs B1937+21, B1821-24, and J0218+4232. We fit Gaussians and Lorentzians to the…

We report on our discovery of the radio pulsar, PSR J2016$+$3711, in supernova remnant (SNR) CTB 87, with a $\sim10.8\sigma$ significance of pulses, which confirms the compact nature of the X-ray point source in CTB 87. It is the first…

High Energy Astrophysical Phenomena · Physics 2024-02-02 Qian-Cheng Liu , Wen-Juan Zhong , Yang Chen , Pei Wang , Ping Zhou , You-Ling Yue , Di Li

We report the discovery of the millisecond pulsar PSR J2043+1711 in a search of a Fermi Large Area Telescope (LAT) source with no known associations, with the Nancay Radio Telescope. The new pulsar, confirmed with the Green Bank Telescope,…

We present a detailed study of the single radio pulses of PSR B0656+14, a pulsar also known to be a strong pulsed source of high-energy emission. Despite the extensive studies at high-energy wavelengths, there is little or no published work…

Astrophysics · Physics 2009-11-11 P. Weltevrede , G. A. E. Wright , B. W. Stappers , J. M. Rankin

We have used the Robert C. Byrd Green Bank Telescope to time nine previously known pulsars without published timing solutions in the globular clusters M62, NGC 6544, and NGC 6624. We have full timing solutions that measure the spin,…

High Energy Astrophysical Phenomena · Physics 2012-01-10 Ryan S. Lynch , Paulo C. C. Freire , Scott M. Ransom , Bryan A. Jacoby

Giant pulses (GPs) are extremely bright individual pulses of radio pulsar. In microbursts of Crab pulsar, which is an active GP emitter, zebra-pattern-like spectral structures are observed, which are reminiscent of the `zebra bands' that…

High Energy Astrophysical Phenomena · Physics 2018-11-28 Weiyang Wang , Jiguang Lu , Songbo Zhang , Xuelei Chen , Rui Luo , Renxin Xu

We report the discovery of pulsed X-ray emission from the compact object CXOU J112439.1-591620 within the Galactic supernova remnant G292.0+1.8 using the High Resolution Camera on the Chandra X-Ray Observatory. The X-ray period is…

Astrophysics · Physics 2007-05-23 John P. Hughes , Robert B. Friedman , Patrick Slane , Sangwook Park

The understanding of pulsar radio emission demands a close look at all regions of the huge parameter space present for pulsar observations. In this review we concentrate on the space given by the range of observed pulse periods, spanning…

Astrophysics · Physics 2007-05-23 M. Kramer

We report on high-resolution spatial and timing results for binary millisecond pulsar PSR J0218+4232 obtained with the Chandra HRC-I and HRC-S in imaging mode. We found no indications for extended emission at 1 arcsec scales. With the HRC-S…

Astrophysics · Physics 2009-11-07 L. Kuiper , W. Hermsen , F. Verbunt , S. Ord , I. Stairs , A. Lyne

We report on the latest discovery of an extended Very High Energy (VHE) gamma-ray source near the 67 ms pulsar PSR J1831-0952 during the H.E.S.S. Galactic Plane Survey (GPS). The dispersion measure distance of the pulsar (4.3 kpc) would…

High Energy Astrophysical Phenomena · Physics 2019-08-13 F. Sheidaei , A. Djannati-Ataï , H. Gast

PSR J0514-4002A is a 5-ms pulsar is located in the globular cluster NGC 1851; it belongs to a highly eccentric (e = 0.888) binary system. It is one of the earliest known examples of a numerous and fast-growing class of eccentric binary MSPs…

Astrophysics · Physics 2008-11-26 Paulo C. C. Freire , Scott M. Ransom , Yashwant Gupta

Pulsars orbiting the Galactic center black hole, Sgr A*, would be potential probes of its mass, distance and spin, and may even be used to test general relativity. Despite predictions of large populations of both ordinary and millisecond…

Astrophysics of Galaxies · Physics 2014-02-20 Jason Dexter , Ryan M. O'Leary

Radio-wave scattering is enhanced dramatically for Galactic center sources in a region with radius >~ 15 arc min. Using scattering from Sgr A* and other sources, we show that pulse broadening for pulsars in the Galactic center is {\em at…

Astrophysics · Physics 2009-10-28 James M. Cordes , T. Joseph W. Lazio

The globular cluster Omega Centauri is the most massive and luminous cluster in the Galaxy. The $\gamma$-ray source FL8Y J1326.7$-$4729 is coincident with the core of the cluster, leading to speculation that hitherto unknown radio pulsars…

High Energy Astrophysical Phenomena · Physics 2020-01-15 Shi Dai , Simon Johnston , Matthew Kerr , Fernando Camilo , Andrew Cameron , Lawrence Toomey , Hiroki Kumamoto

We have carried out a detailed study of the spectral nature of six pulsars surrounded by Pulsar wind nebulae (PWN). The pulsar flux density were estimated using the interferometric imaging technique of the Giant Metrewave Radio Telescope at…

High Energy Astrophysical Phenomena · Physics 2018-02-07 Rahul Basu , Karolina Rożko , Jarosław Kijak , Wojciech Lewandowski

We present the discovery of three pulsars in the Globular Cluster (GC) M15 (NGC 7078) by the Five-hundred-meter Aperture Spherical radio Telescope (FAST). PSR J2129+1210J (M15J) is a millisecond pulsar with a spin period of 11.84 ms and a…

We report results of one of the most sensitive pulsar surveys to date targeting the innermost region of the Galactic Center (GC) using the Robert C. Byrd Green Bank Telescope (GBT) at X-band (8--12GHz) using data from the Breakthrough…