English
Related papers

Related papers: An Eclipsing Black Widow Pulsar in NGC 6712

200 papers

We present the discovery of PSR J1728-4608, a new redback spider pulsar identified in images from the Australian SKA Pathfinder telescope. PSR J1728-4608 is a millisecond pulsar with a spin period of 2.86 ms, in a 5.05 hr orbit with a…

High Energy Astrophysical Phenomena · Physics 2025-12-11 F. Petrou , Y. Wang , N. Hurley-Walker , S. McSweeney , L. Zhang , R. G. Key , J. Freeburn , B. W. Meyers , David L. Kaplan , A. Zic , Tara Murphy , D. Dobie , Y. Maan

Detecting a pulsar associated with a supernova remnant (SNR) and/or pulsar wind nebula (PWN) is crucial for unraveling its formation history and pulsar wind dynamics, yet the association with a radio pulsar is observed only in a small…

High Energy Astrophysical Phenomena · Physics 2024-12-17 A. Ahmad , S. Dai , S. Lazarević , M. D. Filipović , S. Johnston , M. Kerr , D. Li , C. Maitra , R. N. Manchester

PSR J0514$-$4002A is a binary millisecond pulsar located in the globular cluster NGC 1851. The pulsar has a spin period of 4.99 ms, an orbital period of 18.8 days, and is in a very eccentric ($e = 0.89$) orbit around a massive companion. In…

We study the timing stability of three black widow pulsars, both in terms of their long-term spin evolution and their shorter-term orbital stability. The erratic timing behaviour and radio eclipses of the first two black widow pulsar…

We present the discovery of a new optical/X-ray source likely associated with the Fermi $\gamma$-ray source 4FGL J1408.6-2917. Its high-amplitude periodic optical variability, large spectroscopic radial velocity semi-amplitude, evidence for…

High Energy Astrophysical Phenomena · Physics 2023-01-04 Samuel J. Swihart , Jay Strader , Laura Chomiuk , Elias Aydi , Kirill V. Sokolovsky , Paul S. Ray , Matthew Kerr

The eclipses of certain types of binary millisecond pulsars (i.e. `black widows' and `redbacks') are often studied using high-time-resolution, `beamformed' radio observations. However, they may also be detected in images generated from…

We report the discovery of PSR J1757$-$1854, a 21.5-ms pulsar in a highly-eccentric, 4.4-h orbit around a neutron star (NS) companion. PSR J1757$-$1854 exhibits some of the most extreme relativistic parameters of any known pulsar, including…

We propose using radio line spectroscopy to detect molecular absorption lines (such as OH at 1.6-1.7 GHz) before and after the total eclipse of black widow (BW) and other short orbital period binary pulsars with low mass companions. The…

High Energy Astrophysical Phenomena · Physics 2017-06-15 Alak Ray , Abraham Loeb

Time-domain analysis of an archival XMM-Newton observation unveiled a very unusual variability pattern in the soft X-ray emission of PSR J1311-3430, a black widow millisecond pulsar in a tight binary (P_B=93.8 min) with a very low-mass…

High Energy Astrophysical Phenomena · Physics 2022-11-16 Andrea De Luca , Martino Marelli , Sandro Mereghetti , Ruben Salvaterra , Roberto Mignani , Andrea Belfiore

We report the discovery and characterization of PSR J1810-0623, a fully recycled millisecond pulsar with a spin period of 4.55 ms, discovered with the Five-hundred-meter Aperture Spherical radio Telescope (FAST) and followed up with FAST…

High Energy Astrophysical Phenomena · Physics 2026-03-17 Jie Zhang , Zerui Wang , Lei Zhang , Yulan Liu , Alessandro Ridolfi , Meng Guo , Di Li , Ryan S. Lynch , Cong Wang , Pei Wang , Mengmeng Ni , Jiale Hu , Mengquan Liu , Zhie Liu , Bo Han , Chenchen Miao

We present the results of deep near-infrared imaging of the recently discovered helium star pulsar binary J1928$+$1815 situated in the Galactic plane. Our observations did not achieve significant detections, providing limiting magnitudes of…

PSRJ1910-5959A (J1910A) is a binary millisecond pulsar in a 0.837 day circular orbit around a helium white dwarf (HeWD) companion. This pulsar is located 6.3 arcmin away from the centre of the globular cluster NGC6752. Given the large…

PSR B1310+18A is a 33-ms binary pulsar in a 256-day, low eccentricity orbit with a low-mass companion located in NGC 5024 (M53). In this Letter, we present the first phase-coherent timing solution for this pulsar (designated as M53A)…

High Energy Astrophysical Phenomena · Physics 2025-02-05 Yujie Lian , P. C. C. Freire , Shuo Cao , Mario Cadelano , Cristina Pallanca , Zhichen Pan , Haiyan Zhang , Baoda Li , Lei Qian

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…

Using the MeerKAT radio telescope, a series of observations have been conducted to time the known pulsars and search for new pulsars in the globular cluster NGC 6440. As a result, two pulsars have been discovered, NGC 6440G and NGC 6440H,…

We report the discovery of a binary millisecond pulsar (namely PSR J1641+3627F or M13F) in the globular cluster M13 (NGC 6205) and timing solutions of M13A to F using observations made with the Five-hundred-metre Aperture Spherical radio…

We report the discovery of a previously unidentified pulsar as part of a radio campaign to identify neutron star companions to low-mass white dwarfs (LMWDs) using the Robert C.\ Byrd Green Bank Telescope (GBT). PSR J0802-0955, which is…

Solar and Stellar Astrophysics · Physics 2018-06-18 Jeff J. Andrews , Marcel A. Agüeros , Fernando Camilo , Mukremin Kilic , Alex Gianninas , Warren Brown , Craig Heinke

The recent discovery of J0737-3039A & B-two pulsars in a highly relativistic orbit around one another - offers an unprecedented opportunity to study the elusive physics of pulsar radio emission. The system contains a rapidly rotating pulsar…

Astrophysics · Physics 2007-05-23 Fredrick A. Jenet , Scott M. Ransom

Globular clusters contain a unique pulsar population, with many exotic systems that can form only in their dense stellar environments. The leap in sensitivity of the upgraded Giant Metrewave Radio Telescope (uGMRT) in India, especially at…

High Energy Astrophysical Phenomena · Physics 2022-08-09 T. Gautam , A. Ridolfi , P. C. C. Freire , R. S. Wharton , Y. Gupta , S. M. Ransom , L. S. Oswald , M. Kramer , M. E. DeCesar

We present timing solutions for eight binary millisecond pulsars (MSPs) discovered by searching unidentified Fermi-LAT source positions with the 327 MHz receiver of the Arecibo 305-m radio telescope. Five of the pulsars are "spiders" with…

High Energy Astrophysical Phenomena · Physics 2021-03-10 J. S. Deneva , P. S. Ray , F. Camilo , P. C. C. Freire , H. T. Cromartie , S. M. Ransom , E. Ferrara , M. Kerr , T. H. Burnett , P. M. Saz Parkinson