English
Related papers

Related papers: Peculiar nulling in PSR J1738-2330

200 papers

We present the discovery of 37 pulsars from $\sim$ 20 years old archival data of the Parkes Multibeam Pulsar Survey using a new FFT-based search pipeline optimised for discovering narrow-duty cycle pulsars. When developing our pulsar search…

High Energy Astrophysical Phenomena · Physics 2023-03-01 R. Sengar , M. Bailes , V. Balakrishnan , M. C. i Bernadich , M. Burgay , E. D. Barr , C. M. L. Flynn , R. Shannon , S. Stevenson , J. Wongphechauxsorn

It has recently been shown that there is a close correlation between the slowdown rates and the pulse shapes of six pulsars, and between the slowdown rates and the flux density of three others. This indicates that these phenomena are…

High Energy Astrophysical Phenomena · Physics 2015-06-12 Andrew Lyne

PSR J0742-2822 exhibits two distinct emission states that are identified by discrete changes in the observed pulse profile. These changes have previously been shown to correlate with changes in the derivative of the pulse frequency. In this…

Solar and Stellar Astrophysics · Physics 2015-06-15 M. J. Keith , R. M. Shannon , S. Johnston

We report the discovery of PSR J1838-0537, a gamma-ray pulsar found through a blind search of data from the Fermi Large Area Telescope (LAT). The pulsar has a spin frequency of 6.9 Hz and a frequency derivative of -2.2e-11 Hz/s, implying a…

Transitional pulsars provide us with a unique laboratory to study the physics of accretion onto a magnetic neutron star. PSR J1023+0038 (J1023) is the best studied of this class. We investigate the X-ray spectral properties of J1023 in the…

High Energy Astrophysical Phenomena · Physics 2019-09-25 S. Campana , A. Miraval Zanon , F. Coti Zelati , D. F. Torres , M. C. Baglio , A. Papitto

In this paper we present results from flux density measurements for 21 pulsars over a wide frequency range, using the Giant Metrewave Radio Telescope (GMRT) and the Effelsberg telescope. Our sample was a set of mostly newly discovered…

High Energy Astrophysical Phenomena · Physics 2014-10-31 M. Dembska , J. Kijak , A. Jessner , W. Lewandowski , B. Bhattacharyya , Y. Gupta

We demonstrate that the high-magnetic field pulsar J1119-6127 exhibits three different types of behaviour in the radio band. Trailing the "normal" profile peak there is an "intermittent" peak and these components are flanked by two…

Solar and Stellar Astrophysics · Physics 2015-05-20 Patrick Weltevrede , Simon Johnston , Cristobal M. Espinoza

A millisecond pulsar having an ellipticity, that is an asymmetric mass distribution around its spin-axis, could emit continuous gravitational waves, which have not been detected so far. An indirect way to infer such waves is to estimate the…

High Energy Astrophysical Phenomena · Physics 2020-08-05 Sudip Bhattacharyya

PSR J1119-6127 is a radio pulsar that behaved magnetar like bursts, and we performed a comprehensive investigation of this pulsar using the archival high-energy observations obtained after its outburst in 2016 July. After the 2016 outburst,…

High Energy Astrophysical Phenomena · Physics 2018-10-17 Lupin Chun-Che Lin , Hui-Hui Wang , Kwan-Lok Li , Jumpei Takata , Chin-Ping Hu , C. -Y. Ng , C. Y. Hui , A. K. H. Kong , Pak-Hin T. Tam , Paul K. H. Yeung

Pulsars are known to manifest complex phenomena, such as nulling, sub-pulse drifting, and periodicity. Within the purview of this investigation, we have harnessed the wavelet analysis technique to scrutinize the multifaceted periodicities…

High Energy Astrophysical Phenomena · Physics 2024-03-19 Peng-Fu Tian , Ping Zhang , Wen Yang , Wei Wang , Pei Wang

Rotating Radio Transients (RRATs) are neutron stars that emit sporadic radio bursts. We detected 1955 single pulses from RRAT J1913+1330 using the 19-beam receiver of the Five-hundred-meter Aperture Spherical Radio Telescope (FAST). These…

Rotating Radio Transients (RRATs) are neutron stars emitting sporadic radio pulses. The unique emission of RRATs has been proposed to resemble those of known pulsar types, such as extreme nulling pulsars or pulsars with giant pulses.…

High Energy Astrophysical Phenomena · Physics 2024-11-18 S. B. Zhang , X. Yang , J. J. Geng , Y. P. Yang , X. F. Wu

We present radio, X-ray, and gamma-ray observations which reveal that the binary millisecond pulsar / low-mass X-ray binary transition system PSR J1023+0038 has undergone a transformation in state. Whereas until recently the system harbored…

Single-pulse studies are important to understand the pulsar emission mechanism and the noise floor in precision timing. We study total intensity and polarimetry properties of three bright millisecond pulsars - PSRs J1022+1001, J1713+0747,…

High Energy Astrophysical Phenomena · Physics 2023-01-18 N. T. Palliyaguru , B. B. P. Perera , M. A. McLaughlin , S. Oslowski , G. L. Siebert

XMM-Newton observations of the middle-aged radio-quiet $\gamma$-ray pulsar J0554+3107 allowed us, for the first time, firmly identify it in X-rays by detection of pulsations with the pulsar period. In the 0.2-2 keV band, the pulse profile…

High Energy Astrophysical Phenomena · Physics 2023-05-18 A. S. Tanashkin , A. V. Karpova , A. Y. Potekhin , Y. A. Shibanov , D. A. Zyuzin

PSR J1744-3922 is a binary pulsar exhibiting highly variable pulsed radio emission. We report on a statistical multi-frequency study of the pulsed radio flux variability which suggests that this phenomenon is extrinsic to the pulsar and…

PSR J0922+0638 (B0919+06) shows unexplained anomalous variations in the on-pulse phase, where the pulse appears to episodically move to an earlier longitude for a few tens of rotations before reverting to the usual phase for approximately…

Radio timing observations of the high-magnetic-field pulsar PSR J1718-3718 have shown that it suffered a large glitch with Dnu_g/nu = (33.25 +/- 0.01) x 10^{-6} between 2007 September (MJD 54336) and 2009 January (MJD 54855). This is the…

High Energy Astrophysical Phenomena · Physics 2015-05-28 Richard N Manchester G Hobbs

Using the Five-hundred-meter Aperture Spherical radio Telescope (FAST), we have recorded 10^5 single pulses from PSR J1022+1001. We studied the polarization properties, their energy distribution and their times of arrival. This is only…

High Energy Astrophysical Phenomena · Physics 2022-02-23 Yi Feng , George Hobbs , Di Li , Shi Dai , Weiwei Zhu , Youling Yue , Pei Wang , Songbo Zhang , Lei Qian , Lei Zhang , Shuangqiang Wang , Chenchen Miao , Mao Yuan , Yongkun Zhang

We present timing solutions for ten pulsars discovered in 350 MHz searches with the Green Bank Telescope. Nine of these were discovered in the Green Bank Northern Celestial Cap survey and one was discovered by students in the Pulsar Search…

‹ Prev 1 3 4 5 6 7 10 Next ›