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We report on the discovery of three new pulsars in the first blind survey of the north Galactic plane (45 degrees < l < 135 degrees; |b| < 1 degrees with the Giant Meterwave Radio telescope (GMRT) at an intermediate frequency of 610 MHz.…

We report the discovery of gamma-ray pulsations from the nearby isolated millisecond pulsar PSR J0030+0451 with the Large Area Telescope (LAT) on the \emph{Fermi} Gamma-ray Space Telescope (formerly GLAST). This discovery makes PSR…

High Energy Astrophysical Phenomena · Physics 2009-07-22 LAT Collaboration

We present observations of PSRs J0437-4715, J0738-4042, J0835-4510, J0908-4913, J1048-5832, J1622-4950, J1644-4559, J1721-3532 and J1740-3015 at 17 GHz using the Parkes radio telescope. All 9 were detected at 17 GHz, additionally, we…

Solar and Stellar Astrophysics · Physics 2015-05-28 M. J. Keith , S. Johnston , L. Levin , M. Bailes

There are a number of candidate sources that are considered to be responsible for the origin of the EGRET source 3EG J1746--2851 (Hartman et al. 1999). The lack of clear identification of this source with any known sources in this region is…

Astrophysics · Physics 2007-05-23 F. Yusef-Zadeh

We performed deep observations to search for radio pulsations in the directions of 375 unassociated Fermi Large Area Telescope (LAT) gamma-ray sources using the Giant Metrewave Radio Telescope (GMRT) at 322 and 607 MHz. In this paper we…

We analyze the evolutionary status of recently discovered long-period radio sources PSR J0901-4046, GLEAM-X J1627-52, and GPM J1839-10. We discuss the hypothesis that all three sources are radio pulsars. In the framework of standard…

High Energy Astrophysical Phenomena · Physics 2023-10-31 M. D. Afonina , A. V. Biryukov , S. B. Popov

TeV halos have been suggested as a common phenomenon associated with middle-aged pulsars. Based on our recent work on PSR~J0631+1036, which is the only known source positionally coincident with a hard TeV gamma-ray source and likely powers…

High Energy Astrophysical Phenomena · Physics 2023-10-10 Dong Zheng , Zhongxiang Wang

The Fermi Large Area Telescope (LAT) data have confirmed the pulsed emission from all six high-confidence gamma-ray pulsars previously known from the EGRET observations. We report results obtained from the analysis of 13 months of LAT data…

High Energy Astrophysical Phenomena · Physics 2015-05-19 Fermi LAT Collaboration , A. A. Abdo

Motivated by the discovery of a pulsar in the direction of the old open cluster NGC 6791, we conducted a search for radio pulsars in archival Parkes observations targeting similar old open clusters. We reprocessed 224 observations totalling…

High Energy Astrophysical Phenomena · Physics 2025-06-25 S. B. Zhang , J. J. Wei , X. Yang , S. Dai , J. S. Wang , L. Toomey , S. Q. Wang , G. Hobbs , X. F. Wu , L. Staveley-Smith

3EG J1837-0423 and HESS J1841-055 are two unidentified and peculiar high-energy sources located in the same region of the sky, separated by 1.4 deg. Specifically, 3EG J1837-0423 is a transient MeV object detected by EGRET only once during…

High Energy Astrophysical Phenomena · Physics 2010-01-15 V. Sguera , G. E. Romero , A. Bazzano , N. Masetti , A. J. Bird , L. Bassani

Identifying gamma-ray sources in the Galaxy is hampered by their poor localization, source confusion, and the large variety of potential emitters. Neutron stars and their environment offer various ways to power gamma-ray sources: pulsed…

Astrophysics · Physics 2017-08-23 I. A. Grenier

In 1989, an air-borne experiments (VEGA experiment) aiming at the detection of a few 10 GeV $\gamma$-ray were carried out. In these experiments, nine point-source candidates along the Galactic plane were reported. In these candidates, the…

Astrophysics · Physics 2007-05-23 Ryoji Enomoto

The H.E.S.S. array of imaging Cherenkov telescopes has discovered a number of previously unknown gamma-ray sources in the very high energy (VHE) domain above 100 GeV. The good angular resolution of H.E.S.S. (~0.1 degree per event), as well…

Astrophysics · Physics 2019-08-14 Yves A. Gallant

The recent detection of extended $\gamma$-ray emission around middle-aged pulsars is interpreted as inverse-Compton scattering of ambient photons by electron-positron pairs escaping the pulsar wind nebula, which are confined near the system…

High Energy Astrophysical Phenomena · Physics 2024-11-12 S. Abdollahi , F. Acero , A. Acharyya , A. Adelfio , M. Ajello , L. Baldini , J. Ballet , C. Bartolini , J. Becerra Gonzalez , R. Bellazzini , E. Bissaldi , R. Bonino , P. Bruel , R. A. Cameron , P. A. Caraveo , D. Castro , E. Cavazzuti , C. C. Cheung , N. Cibrario , S. Ciprini , G. Cozzolongo , P. Cristarella Orestano , A. Cuoco , S. Cutini , F. D'Ammando , N. Di Lalla , A. Dinesh , L. Di Venere , A. Domínguez , A. Fiori , S. Funk , P. Fusco , F. Gargano , C. Gasbarra , D. Gasparrini , S. Germani , F. Giacchino , N. Giglietto , M. Giliberti , F. Giordano , M. Giroletti , D. Green , I. A. Grenier , L. Guillemot , S. Guiriec , R. Gupta , M. Hashizume , E. Hays , J. W. Hewitt , D. Horan , X. Hou , T. Kayanoki , M. Kuss , A. Laviron , M. Lemoine-Goumard , A. Liguori , J. Li , I. Liodakis , P. Loizzo , F. Longo , F. Loparco , L. Lorusso , M. N. Lovellette , P. Lubrano , S. Maldera , D. Malyshev , G. Martí-Devesa , P. Martin , M. N. Mazziotta , I. Mereu , P. F. Michelson , N. Mirabal , W. Mitthumsiri , T. Mizuno , P. Monti-Guarnieri , M. E. Monzani , A. Morselli , I. V. Moskalenko , M. Negro , N. Omodei , M. Orienti , E. Orlando , D. Paneque , G. Panzarini , M. Persic , M. Pesce-Rollins , R. Pillera , T. A. Porter , S. Rainò , R. Rando , M. Razzano , A. Reimer , O. Reimer , M. Rocamora Bernal , M. Sánchez-Conde , P. M. Saz Parkinson , D. Serini , C. Sgrò , E. J. Siskind , D. A. Smith , G. Spandre , P. Spinelli , A. W. Strong , D. J. Suson , H. Tajima , J. B. Thayer , D. F. Torres , J. Valverde , Z. Wadiasingh , K. Wood , G. Zaharijas

The predicted nature of the candidate redback pulsar 3FGL\,J2039.6$-$5618 was recently confirmed by the discovery of $\gamma$-ray millisecond pulsations (Clark et al. 2020, hereafter Paper\,I), which identify this $\gamma$-ray source as…

High Energy Astrophysical Phenomena · Physics 2020-12-02 A. Corongiu , R. P. Mignani , A. S. Seyffert , C. J. Clark , C. Venter , L. Nieder , A. Possenti , M. Burgay , A. Belfiore , A. De Luca , A. Ridolfi , Z. Wadiasingh

We discuss PSR J1740+1000, one of five pulsars recently discovered in a search of 470 square degrees at 430 MHz during the upgrade of the 305-m Arecibo telescope. The period of 154 ms and period derivative of 2.1 x 10^-14 s/s imply a…

Over the summer of 2007, we obtained 1191 hours of `drift-scan' pulsar search observations with the Green Bank Telescope at a radio frequency of 350 MHz. Here we describe the survey setup, search procedure, and the discovery and follow-up…

Observations of the Galactic Plane performed by the H.E.S.S. telescope array have revealed a significant excess at very-high-energies (VHE; E>0.1 TeV) from the direction of PSR J1459-60, a rather old gamma-ray pulsar (64 kyr) with a…

High Energy Astrophysical Phenomena · Physics 2019-08-14 R. de los Reyes , A. Zajczyk , R. C. G. Chaves

We report on radio polarimetry observations for nine southern pulsars. Six of the nine in the sample are young, with characteristic ages under 100 kyr and high spin-down luminosities. All six show a significant degree of linear…

Astrophysics · Physics 2008-11-26 F. Crawford , R. N. Manchester , V. M. Kaspi

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…