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Related papers: BeppoSAX observations of rotation-powered pulsars

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Unexpected sign, significant magnitude and time-variation of frequency second derivative exist not only in singular radio pulsars but also in Soft Gamma repeaters (SGRs) and Anomalous X-ray pulsars (AXPs). This paper shows that the these…

Astrophysics · Physics 2016-08-30 Biping Gong

The behaviour of the pulsar spectrum at high radio frequencies can provide decisive information about the nature of the radio emission mechanism. We report recent observations of a selected sample of pulsars at lambda=9mm (32 GHz) with the…

Astrophysics · Physics 2009-11-13 O. Loehmer , A. Jessner , M. Kramer , R. Wielebinksi , O. Maron

We describe the first X-ray observations of binary millisecond pulsars PSRs J0023+0923, J1810+1744, J2215+5135, and J2256-1024. All four are Fermi gamma-ray sources and three are 'black-widow' pulsars, with companions of mass < 0.1 solar…

Solar and Stellar Astrophysics · Physics 2015-06-11 Peter Gentile , Maura McLaughlin , Mallory Roberts , Fernando Camilo , Jason Hessels , Matthew Kerr , Scott Ransom , Paul Ray , Ingrid Stairs

Over the past decade it has become apparent that a class of `bursting pulsars' exist with the discovery of PSR J1752+2359 and PSR J1938+2213. In these pulsars, a sharp increase in the emission is observed that then tends to systematically…

Solar and Stellar Astrophysics · Physics 2014-02-10 Andrew Seymour , Duncan Lorimer , Josh Ridley

We present an X-ray timing analysis of the Crab pulsar, PSR B0531+21, using the archival RXTE data. We have investigated the stability of the Crab pulse profile, in soft (2-20 keV) and hard (30-100 keV) X-ray energies, over the last decade…

High Energy Astrophysical Phenomena · Physics 2015-05-28 Chetana Jain , Biswajit Paul

We present five recycled pulsars discovered during a 21-cm survey of approximately 4,150 deg^2 between 15 deg and 30 deg from the galactic plane using the Parkes radio telescope. One new pulsar, PSR J1528-3146, has a 61 ms spin period and a…

Astrophysics · Physics 2008-11-26 B. A. Jacoby , M. Bailes , S. M. Ord , H. S. Knight , A. W. Hotan

PKS 2155--304 is one of the brightest blazars in the X-ray band. It was repeatedly monitored with BeppoSax during three long campaigns of about 2 days each in November of 1996, 1997 and 1999. The source underwent different states of…

I present an overview of our current observational knowledge of the six known accretion-driven millisecond X-ray pulsars. A prominent place in this review is given to SAX J1808.4-3658; it was the first such system discovered and currently…

Astrophysics · Physics 2007-05-23 Rudy Wijnands

The stability of the optical pulse of the Crab pulsar is analyzed based on the 1 $\mu$s resolution observations with the Russian 6-meter and William Hershel telescopes equipped with different photon-counting detectors. The search for the…

Astrophysics · Physics 2007-09-18 S. Karpov , G. Beskin , A. Biryukov , V. Plokhotnichenko , V. Debur , A. Shearer

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

We report pulsar timing observations carried out in L-band with NTSC's 40-meter Haoping Radio Telescope (HRT), which was constructed in 2014. The observations were carried out using the pulsar machine we developed. Timing observations…

Instrumentation and Methods for Astrophysics · Physics 2021-01-13 Jintao Luo , Yuping Gao , Tinggao Yang , Chengshi Zhao , Minglei Tong , Yongnan Rao , Yifeng Li , Bian Li , Xingzhi Zhu , Haihua Qiao , Xiaochun Lu

The Crab nebula and its pulsar have been observed for about 3 hours with the high-speed photo-polarimeter OPTIMA in January 2002 at the Calar Alto 3.5m telescope. The Crab pulsar intensity and polarization are determined at all phases of…

Astrophysics · Physics 2009-01-14 G. Kanbach , A. Slowikowska , S. Kellner , H. Steinle

We report on the discovery of gamma-ray pulsations from five millisecond pulsars (MSPs) using the Fermi Large Area Telescope (LAT) and timing ephemerides provided by various radio observatories. We also present confirmation of the gamma-ray…

We present a new phase-coherent timing analysis for the young, energetic pulsar PSR B0540-69 using 7.6 yr of data from the Rossi X-Ray Timing Explorer. We measure the braking index, n=2.140+/-0.009, and discuss our measurement in the…

Astrophysics · Physics 2009-11-13 Margaret A. Livingstone , Victoria M. Kaspi , Fotis P. Gavriil

We report on the X-ray properties of four rotation-powered pulsars with characteristic ages in the range 0.3-5 Myr, derived from the analysis of XMM-Newton archival observations. We found convincing evidence of thermal emission only in the…

High Energy Astrophysical Phenomena · Physics 2018-07-18 Michela Rigoselli , Sandro Mereghetti

The Parkes multibeam pulsar survey has led to the discovery of more than 700 pulsars. In this paper, we provide timing solutions, flux densities and pulse profiles for 180 of these new discoveries. Two pulsars, PSRs J1736-2843 and…

We present RXTE observations of two recently identified massive X-ray binaries. RX J0440.9+4431/BSD 24-491 and RX J1037.5-564/LS 1698 are confirmed as accreting Be/X-ray systems following the discovery of X-ray pulsations, with barycentric…

Astrophysics · Physics 2009-10-31 Pablo Reig , Paul Roche

We report on observations of four southern Anomalous X-ray Pulsars, (1RXS J170849.0-400910, 1E 1048.1-5937, 1E 1841-045 and AX J1845-0258), obtained at 1.4 GHz using the Parkes radio telescope. Radio pulsations from these sources have been…

Astrophysics · Physics 2009-11-11 M. Burgay , N. Rea , G. L. Israel , A. Possenti , L. Burderi , T. Di Salvo , N. D'Amico , L. Stella

We have carried out new, high-frequency, high-time-resolution observations of the Crab pulsar. Combining these with our previous data, we characterize bright single pulses associated with the Main Pulse, both the Low-Frequency and…

High Energy Astrophysical Phenomena · Physics 2016-12-14 T. H. Hankins , J. A. Eilek , G. Jones

Mean pulse profiles and polarization properties are presented for nine southern pulsars. The observations were made using the Parkes radio telescope at frequencies near 1330 MHz; three of the nine pulsars were also observed at 660 MHz. A…

Astrophysics · Physics 2009-11-10 R N Manchester , J L Han