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Related papers: New X-ray observations toward PSR J1826-1256

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PSR J0855-4644 is an energetic pulsar (Edot = 1.1x10^36 erg/s, P=65 ms) discovered near the South-East rim of the supernova remnant (SNR) RX J0852.0-4622 (aka Vela Jr) by the Parkes Multibeam Survey. The position of the pulsar is in spatial…

High Energy Astrophysical Phenomena · Physics 2011-09-22 F. Acero , Y. Gallant , R. Terrier , M. Renaud , J. Ballet

We observed the brightest part of HESS J1825-137 with the Suzaku XIS, and found diffuse X-rays extending at least up to 15' (~ 17 pc) from the pulsar PSR J1826-1334. The spectra have no emission line, and are fitted with an absorbed…

Astrophysics · Physics 2015-05-13 H. Uchiyama , H. Matsumoto , T. G. Tsuru , K. Koyama , A. Bamba

We present an X-ray and radio study of the wind nebula surrounding the central pulsar PSR J1811-1925 in the supernova remnant G11.2-0.3. Using high resolution data obtained with the Chandra X-ray observatory and with the VLA radio telescope…

We carry out high-energy studies of the region of the Galactic TeV source 3HWC J1954+286, whose location coincides with those of PSR~J1954+2836 and supernova remnant (SNR) G65.1+0.6. Analyzing the GeV $\gamma$-ray data obtained with the…

High Energy Astrophysical Phenomena · Physics 2022-05-25 Y. Xing , D. Zheng , Z. Wang , X. Zhang , Y. Chen , G. Xiang

The 44.7 ms X-ray pulsar in the supernova remnant G12.82-0.02/HESS J1813-178 has the second highest spin-down luminosity of known pulsars in the Galaxy, with E-dot=5.6e37 erg/s. Using the Green Bank Telescope, we have detected radio…

High Energy Astrophysical Phenomena · Physics 2021-08-25 F. Camilo , S. M. Ransom , J. P. Halpern , D. A. Roshi

Very-high-energy (VHE) observations have revealed approximately 100 TeV sources in our Galaxy, and a significant fraction of them are under investigation for understanding their origin. We report our study of one of them, HESS~J1844$-$030.…

High Energy Astrophysical Phenomena · Physics 2023-08-02 D. Zheng , Z. Wang , X. Zhang , Y. Chen , Y. Xing

HESS J1809$-$193 is one of the unidentified very-high-energy gamma-ray sources in the H.E.S.S. Galactic Plane Survey (HGPS). It is located in a rich environment, with an energetic pulsar and associated X-ray pulsar wind nebula, several…

High Energy Astrophysical Phenomena · Physics 2023-01-19 Lars Mohrmann , Vikas Joshi , Jim Hinton , Stefan Funk

The spectra of several X-ray binary pulsars display a clear soft excess, which in most cases can be described with a blackbody model, above the main power-law component. While in the high-luminosity sources it is usually characterized by…

High Energy Astrophysical Phenomena · Physics 2015-05-13 N. La Palombara , L. Sidoli , P. Esposito , A. Tiengo , S. Mereghetti

We present the ASCA and Suzaku studies of the TeV source HESS J1837--069, which has not been identified in other wave-lengths. We confirm the presence of two X-ray sources in the Suzaku XIS image, AX J1838.0--0655 and AX J1837.3--0652, near…

Astrophysics · Physics 2015-05-13 Takayasu Anada , Ken Ebisawa , Tadayasu Dotani , Aya Bamba

Since its launch, the Fermi satellite has firmly identified 5 pulsar wind nebulae plus a large number of candidates, all powered by young and energetic pulsars. HESS J1857+026 is a spatially extended gamma-ray source detected by H.E.S.S.…

HESS J1632-478 is an extended and still unidentified TeV source in the galactic plane. In order to identify the source of the very high energy emission and to constrain its spectral energy distribution, we used a deep observation of the…

Solar and Stellar Astrophysics · Physics 2013-03-25 M. Balbo , P. Saouter , R. Walter , L. Pavan , A. Tramacere , M. Pohl , J. -A. Zurita-Heras

The vicinity of the unidentified EGRET source 3EG J1420-6038 has undergone extensive study in the search for counterparts, revealing the energetic young pulsar PSR J1420-6048 and its surrounding wind nebula as a likely candidate for at…

High Energy Astrophysical Phenomena · Physics 2015-05-18 Adam Van Etten , Roger W. Romani

AIMS: HESS J1844-030 is a newly confirmed TeV source in the direction of the X-ray pulsar wind nebula (PWN) candidate G29.4+0.1 and the complex radio source G29.37+0.1, which is likely formed by the superposition of a background radio…

High Energy Astrophysical Phenomena · Physics 2019-06-19 Alberto Petriella

PSR J0108-1431 is a nearby, 170 Myr old, very faint radio pulsar near the "pulsar death line" in the P-Pdot diagram. We observed the pulsar field with the Chandra X-ray Observatory and detected a point source (53 counts in a 30 ks exposure,…

Astrophysics · Physics 2009-06-23 G. G. Pavlov , O. Kargaltsev , J. A. Wong , G. P. Garmire

During a systematic search for new X-ray pulsators in the XMM-Newton archive, we discovered a high amplitude ($PF\simeq86\%$) periodic ($P\simeq7.25\,\mathrm{s}$) modulation in the X-ray flux of 4XMM J045626.3-694723 (J0456 hereafter), a…

Based on its energy-dependent morphology the initially unidentified very high energy (VHE; E>100 GeV) gamma-ray source HESS J1303-631 was recently associated with the pulsar PSR J1301-6305. Subsequent detection of X-ray and GeV counterparts…

High Energy Astrophysical Phenomena · Physics 2015-09-07 Iurii Sushch , Igor Oya , Ullrich Schwanke , Simon Johnston , Matthew Dalton

The pulsar PSR J0631+1036 was discovered during a radio search of Einstein X-ray source error circles. A detection of a 288ms sinusoidal modulation in the ASCA lightcurve, the same period as the radio pulsar, appeared to confirm the…

Astrophysics · Physics 2007-05-23 J. Kennea , F. Cordova , S. Chatterjee , J. Cordes , C. Ho , R. Much , T. Oosterbroek , A. Parmar

In order to provide a firm identification of the newly discovered Galactic TeV sources, a search for counterparts in a broad band from soft X-ray to soft gamma-rays is crucial as data in these wavebands allow us to distinguish between…

We report the results obtained from XMM-Newton observations of the TeV-detected supernova remnant (SNR) HESS J1534-571. We focus on the nature of the cosmic-ray particle content in the SNR, which is revealed by its $\gamma$-ray emission. No…

High Energy Astrophysical Phenomena · Physics 2023-11-08 N. T. Nguyen-Dang , G. Pühlhofer , M. Sasaki , A. Bamba , V. Doroshenko , A. Santangelo

HESS J1825-137 is one of the most powerful and luminous TeV gamma-ray pulsar wind nebulae (PWNe), making it an excellent laboratory to study particle transportation around pulsars. We present a model of the (diffusive and advective)…

High Energy Astrophysical Phenomena · Physics 2024-04-08 Tiffany Collins , Gavin Rowell , Sabrina Einecke , Fabien Voisin , Yasuo Fukui , Hidetoshi Sano
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