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Related papers: A Search for Optical Pulsations from Two Young Sou…

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We present the results of first deep optical observations of the field of the old ($\sim 10^8$ yr), nearby, isolated pulsar J0108-1431, in an attempt to detect its optical counterpart. The observations were performed using the FORS1…

Astrophysics · Physics 2009-11-07 Roberto P. Mignani , Richard N. Manchester , George G. Pavlov

Double pulsar systems offer unrivaled advantages for the study of both astrophysics and fundamental physics. But only one has been visible: PSR J0737$-$3039; and its component pulsar B has now rotated out of sight due to the…

High Energy Astrophysical Phenomena · Physics 2025-09-17 Yuyang Wang , Joeri van Leeuwen

We present results of Compton Gamma-Ray Observatory EGRET observations of the unidentified high-energy gamma-ray sources 2EG J1049-5847 (GEV J1047-5840, 3EG J1048-5840) and 2EG J1103-6106 (3EG J1102-6103). These sources are spatially…

Astrophysics · Physics 2009-10-31 V. M. Kaspi , J. R. Lackey , J. Mattox , R. N. Manchester , M. Bailes , R. Pace

We report the analysis of the first deep optical observations of three isolated $\gamma$-ray pulsars detected by the {\em Fermi Gamma-ray Space Telescope}: the radio-loud PSR\, J0248+6021 and PSR\, J0631+1036, and the radio-quiet PSR\,…

High Energy Astrophysical Phenomena · Physics 2016-09-07 R. P. Mignani , N. Rea , V. Testa , M. Marelli , A. De Luca , M. Pierbattista , A. Shearer , D. F. Torres , E. De Ona Wilhelmi

Aims: We performed deep optical observations of the field of an old, fast-moving radio pulsar PSR B1133+16 in an attempt to detect its optical counterpart and a bow shock nebula. Methods: The observations were carried out using the direct…

Astrophysics · Physics 2009-11-13 S. V. Zharikov , Yu. A. Shibanov , R. E. Mennickent , V. N. Komarova

We report the B band optical observations of an old (17.5 Myr) radiopulsar PSR B0950+08 obtained with the Suprime-Cam at the Subaru telescope. We detected a faint object, B=27.07(16). Within our astrometrical accuracy it coincides with the…

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

PSR J0205+6449 is a young ({\approx} 5400 years), Crab-like pulsar detected in radio and at X and {\gamma}-ray energies and has the third largest spin-down flux among known rotation powered pulsars. It also powers a bright synchrotron…

High Energy Astrophysical Phenomena · Physics 2015-06-16 P. Moran , R. P. Mignani , S. Collins , A. de Luca , N. Rea , A. Shearer

There remain several definitive gamma-ray pulsars that are as yet undetected in the optical regime. A classic case is the pulsar PSR B1951+32, associated with the complex CTB 80 SNR. Previous ground based high speed 2-d optical studies have…

Astrophysics · Physics 2009-11-07 R. F. Butler , A. Golden , A. Shearer

We report on X-ray observations of the young, energetic radio pulsar PSR J1105-6107 obtained using the Rossi X-ray Timing Explorer. Our timing analysis of Proportional Counter Array data finds no evidence for X-ray pulsations from this…

Astrophysics · Physics 2007-05-23 Julia K. Steinberger , Victoria M. Kaspi , Eric V. Gotthelf

Pulsars PSR J0248+6021 (rotation period P=217 ms and spin-down power Edot = 2.13E35 erg/s) and PSR J2240+5832 (P=140 ms, Edot = 2.12E35 erg/s) were discovered in 1997 with the Nancay radio telescope during a northern Galactic plane survey,…

Observations and theoretical studies have demonstrated that the pulsed spectra of all gamma-ray pulsars terminate at energies below a few hundred GeV. In most cases we expect this cutoff energy E_o to be around 10 GeV. Only with next…

Astrophysics · Physics 2009-10-31 O. C. de Jager , A. Konopelko , B. C. Raubenheimer , B. Visser

The ROSAT source RX J0630.8-2834 was suggested by positional coincidence to be the X-ray counterpart of the old field pulsar PSR B0628-28. This association, however, was regarded to be unlikely based on the computed energetics of the…

Astrophysics · Physics 2009-11-11 Werner Becker , Axel Jessner , Michael Kramer , Vincenzo Testa , Clemens Howaldt

Until now X-radiation from nine millisecond pulsars has been detected. In the present paper we summarize the observations and show the results of a re-analysis of archival ROSAT data. In addition we present the results of recent…

Astrophysics · Physics 2007-05-23 W. Becker , J. Trümper

The 16ms X-ray pulsar PSR J0537-6910 in SNR N157B is the fastest known isolated (non-recycled) pulsar and, with a rotational energy loss dE/dt ~ 4.8 10^38 erg/s, is the most energetic (together with the Crab). Here we report the results of…

Astrophysics · Physics 2007-05-23 R. P. Mignani , L. Pulone , G. Marconi , G. Iannicola , P. A. Caraveo

We have obtained the spectrum of a middle-aged PSR B0656+14 in the 4300-9000 AA range with the ESO/VLT/FORS2. Preliminary results show that at 4600-7000 AA the spectrum is almost featureless and flat with a spectral index $\alpha_nu ~ -0.2…

Astrophysics · Physics 2008-11-26 S. Zharikov , R. E. Mennickent , Yu. Shibanov , V. Komarova

Neutron stars in close binary systems have the potential to spin up to millisecond periods due to the accretion of matter and angular momentum from their low-mass companions. In later stages of this process, they sometimes start to swing…

High Energy Astrophysical Phenomena · Physics 2026-05-22 S. V. Karpov , Artyom S. Tanashkin , G. M. Beskin , V. L. Plokhotnichenko , Y. A. Shibanov , D. A. Zyuzin

Fields of Geminga, PSR B0950+08, PSR J1908+0734 and PSR J0108-1431 have been observed within the program of optical investigation of nearby neutron stars carried out with the 6m telescope. Our multicolour BVR_cI_c photometry has yielded the…

We present high-speed optical photometry of the anomalous X-ray pulsar 1E 1048.1-5937 obtained with ULTRACAM on the 8.2-m Very Large Telescope in June 2007. We detect 1E 1048.1-5937 at a magnitude of i'=25.3+/-0.2, consistent with the…

High Energy Astrophysical Phenomena · Physics 2009-11-13 V. S. Dhillon , T. R. Marsh , S. P. Littlefair , C. M. Copperwheat , P. Kerry , R. Dib , M. Durant , V. M. Kaspi , R. P. Mignani , A. Shearer

We present the results of deep optical imaging of the radio/$\gamma$-ray pulsar PSR J2043+2740, obtained with the Large Binocular Telescope (LBT). With a characteristic age of 1.2 Myr, PSR J2043+2740 is one of the oldest (non recycled)…

High Energy Astrophysical Phenomena · Physics 2017-11-15 V. Testa , R. P. Mignani , N. Rea , M. Marelli , D. Salvetti , A. A. Breeveld , F. Cusano , R. Carini