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Propagation of radio emission in pulsar magnetosphere is reviewed. The effects of polarization transfer, induced scattering and reprocessing to high energies are analysed with an especial emphasis on the implications for the gamma-ray…

高能天体物理现象 · 物理学 2016-04-22 S. A. Petrova

We report the discovery of the first giant pulses from an extragalactic radio pulsar. Observations of PSR B0540-69 in the Large Magellanic Cloud made with the Parkes radio telescope at 1.38 GHz show single pulses with energy more than 5000…

天体物理学 · 物理学 2009-11-07 Simon Johnston , Roger W. Romani

We discuss X-ray and gamma-ray emissions from Crab-like pulsars, PSRs~J0537-6910 and~J0540-6919, in Large Magellanic Cloud. Fermi-LAT observations have resolved the gamma-ray emissions from these two pulsars and found the pulsed emissions…

高能天体物理现象 · 物理学 2016-12-28 J. Takata , K. S. Cheng

In this paper, we report a detailed investigation of the multiwavelength properties of a newly detected gamma-ray pulsar, PSR J2021+4026, in both observational and theoretical aspects. We firstly identify an X-ray source in the XMM-Newton…

高能天体物理现象 · 物理学 2010-08-26 L. Trepl , C. Y. Hui , K. S. Cheng , J. Takata , Y. Wang , Z. Y. Liu , N. Wang

We report the detection of pulsed gamma-rays for PSRs J0631+1036, J0659+1414, J0742-2822, J1420-6048, J1509-5850 and J1718-3825 using the Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope (formerly known as GLAST).…

太阳与恒星天体物理 · 物理学 2010-01-06 The Fermi LAT collaboration , the Fermi Pulsar Timing Consortium

PSR J0537-6910 is a young, energetic, rotation-powered X-ray pulsar with a spin period of 16 ms located in the Large Magellanic Cloud. We have searched for previously undetected radio pulsations (both giant and standard) from this pulsar in…

天体物理学 · 物理学 2008-11-26 F. Crawford , M. McLaughlin , S. Johnston , R. Romani , E. Sorrelgreen

Recent multi-frequency measurements of pulse widths W50 for the long-period pulsar J0250+5854 by Agar et al provide a unique insight to the emission process owing to its small polar-cap radius. The frequency-dependence of W50 can be simply…

高能天体物理现象 · 物理学 2021-12-15 P B Jones

The radiation of pulsars have been observed for many years. A few pulsars are discovered to have both radio and gamma-ray emission. Many models on pulsar radiation have been developed, but so far we are still lacking an elaborate model…

天体物理学 · 物理学 2009-09-29 G. J. Qiao , K. J. Lee , H. G. Wang , R. X. Xu

PSR B0540-69 is a young pulsar in the Large Magellanic Cloud that has similar properties with respect to the Crab Pulsar, and is embedded in a Pulsar Wind Nebula. We have analyzed the complete archival RXTE dataset of observations of this…

天体物理学 · 物理学 2009-01-17 R. Campana , T. Mineo , A. De Rosa , E. Massaro , A. J. Dean , L. Bassani

We have detected sporadic, bright, short-duration radio pulses from PSR J0901$-$4624. These pulses are emitted simultaneously with persistent, periodic emission that dominates the flux density when averaging over many periods of the pulsar.…

太阳与恒星天体物理 · 物理学 2015-06-24 C. A. Raithel , R. M. Shannon , S. Johnston , M. Kerr

We report the detection of gamma-ray pulsations from the high-magnetic-field rotation-powered pulsar PSR J1119-6127 using data from the Fermi Large Area Telescope. The gamma-ray light curve of PSR J1119-6127 shows a single, wide peak offset…

I present a review of the main phenomenological properties at high energies related to massive gamma-ray binaries and I discuss some aspects of pulsar models for these objects.

高能天体物理现象 · 物理学 2015-05-14 Gustavo E. Romero

Recent observations have detected a number of young pulsars from the power peak in the gamma-ray band to the incoherent photon peak in the optical/IR. We have made progress on the multiwavelength phenomenology of pulsar emission and…

天体物理学 · 物理学 2007-05-23 Roger W. Romani

The double pulsar system J0737-3039 appears associated with a continuous radio emission, nearly three times stronger than that of the two pulsars together. If such an emission comes from a tranparent cloud its spatial extent (> 10^13 cm)…

天体物理学 · 物理学 2009-11-10 R. Turolla A. Treves

Recent studies have shown possible connections between highly magnetized neutron stars ("magnetars"), whose X-ray emission is too bright to be powered by rotational energy, and ordinary radio pulsars. In addition to the magnetar SGR…

高能天体物理现象 · 物理学 2017-04-12 J. Dexter , N. Degenaar , M. Kerr , A. Deller , J. Deneva , P. Lazarus , M. Kramer , D. Champion , R. Karuppusamy

The pulsar radio emission is commonly associated with the plasma outflow in the open field line tube; then a pencil beam is emitted along the pulsar magnetic axis. Observations suggest that there is an additional radio emission mechanism…

高能天体物理现象 · 物理学 2018-12-12 Yuri Lyubarsky

The binary J0737-3039 A & B includes two pulsars in a highly relativistic orbit. The pulsed radio flux from pulsar B brightens considerably during two portions of each orbit. This phenomenon cannot be naturally triggered by the illumination…

天体物理学 · 物理学 2009-11-10 Bing Zhang , Abraham Loeb

We report on orbital modulation of the 100-600 MeV gamma-ray emission of the $P_{\rm B}=4.6$ hr millisecond pulsar binary PSR J2339$-$0533 using 11 yr of Fermi Large Area Telescope data. The modulation has high significance (chance…

高能天体物理现象 · 物理学 2020-07-08 Hongjun An , Roger W. Romani , Matthew Kerr

We show that the mysterious, rapidly variable emission at ~400 MeV observed from the Crab Nebula by the AGILE and Fermi experiments could be the result of a sudden drop in the mass-loading of the pulsar wind. The current required to…

高能天体物理现象 · 物理学 2017-11-29 John G. Kirk , Gwenael Giacinti

Motivated by recent results on the location of the radio emission in pulsar magnetospheres, we have developed a model which can account for the large diversity found in the average profile shapes of pulsars. At the centre of our model lies…

天体物理学 · 物理学 2009-11-13 A. Karastergiou , S. Johnston
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