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We report on single-pulse observations of the Galactic Center magnetar PSR J1745$-$2900 that were made using the Parkes 64-m radio telescope with a central frequency of 3.1 GHz at five observing epochs between 2013 July and August. The…

高能天体物理现象 · 物理学 2018-02-23 W. M. Yan , N. Wang , R. N. Manchester , Z. G. Wen , J. P. Yuan

We have conducted the Meterwavelength Single-pulse Polarimetric Emission Survey to study the radio emission properties of normal pulsars. A total of 123 pulsars with periods between 0.1 seconds and 8.5 seconds were observed in the survey at…

Single pulse behaviour of radio pulsars is usually interpreted in terms of the ExB drift of a radio beam. It is shown that antisymmetric arrangement of the radio-bright zones can produce several types of observed single pulse phenomena: the…

高能天体物理现象 · 物理学 2023-03-15 J. Dyks

In recent years periodic amplitude modulation has emerged as a unique emission feature in the single pulse sequence of pulsars alongside periodic nulling and subpulse drifting. Despite ample evidence for the uniqueness of this phenomenon,…

高能天体物理现象 · 物理学 2025-09-05 Rahul Basu , Dipanjan Mitra , George I. Melikidze

We present simultaneous broad-band radio observations on the abnormal emission mode from PSR B1859$+$07 using the Five-hundred-meter Aperture Spherical radio Telescope (FAST). This pulsar shows peculiar emission phenomena, which are…

高能天体物理现象 · 物理学 2022-03-30 Lin Wang , Ye-Zhao Yu , Feifei Kou , Kuo Liu , Xinxin Wang , Bo Peng

Polarized radio emission of RRAT J1854+0306 is investigated with single pulses using Five-hundred-meter-Aperture Spherical Telescope. Its emission is characterized by nulls, narrow and weak pulses, and occasional wide and intense bursts…

高能天体物理现象 · 物理学 2024-04-26 Qi Guo , Minzhi Kong , P. F. Wang , Y. Yan , D. J. Zhou

We study the spin-down properties of PSR B0919+06 based on almost 30 years of radio observations. We confirm that the time derivative of the rotational frequency $\dot \nu$ is modulated quasi-periodically and show that it exhibits a…

太阳与恒星天体物理 · 物理学 2015-06-23 B. B. P. Perera , B. W. Stappers , P. Weltevrede , A. G. Lyne , C. G. Bassa

We report results from simultaneous radio and X-ray observations of PSR B0611+22 which is known to exhibit bursting in its single-pulse emission. The pulse phase of the bursts vary with radio frequency. The bursts are correlated in…

We detail the emission behaviors of three long-period pulsars detected using the Five-hundred-meter Aperture Spherical radio Telescope (FAST) during the CRAFTS survey. Their rotational periods range from 1.83 s to 4.75 s, and the null…

高能天体物理现象 · 物理学 2025-02-07 H. M. Tedila , D. Li , P. Wang , R. Yuen , J. P. Yuan , N. Wang , Z. G. Wen , S. J. Dang , A. G. Tegegne , R. Rejep , C. C. Miao , FAST Collaboration

Single pulse studies offer vital insights into the emission physics of pulsars, particularly in the case of young, nearby sources where intrinsic variability is often pronounced. PSR~B0656+14, known for its sporadic and sometimes intense…

高能天体物理现象 · 物理学 2025-08-20 S. C. Susarla , R. Ferguson , O. A. Johnson , L. Vincetti , D. J. McKenna , E. F. Keane , P. J. McCauley , A. Golden

Simultaneous observations at four different frequencies viz. 313, 607, 1380 and 4850 MHz, for three pulsars, PSRs B0031-07, B0809+74 and B2319+60, are reported in this paper. Identified null and burst pulses are highly concurrent across…

太阳与恒星天体物理 · 物理学 2015-06-22 Vishal Gajjar , Bhal Chandra Joshi , Michael Kramer , Ramesh Karuppusamy , Roy Smits

Many pulsars in the known population exhibit nulling, which is characterised by a sudden cessation and subsequent restoration of radio emission. In this work, we present the localization, timing, and emission properties of a GHRSS…

高能天体物理现象 · 物理学 2023-07-12 Shubham Singh , Jayanta Roy , Shyam Sunder , Bhaswati Bhattacharyya , Sanjay Kudale

During observations of the Galactic Plane Pulsar Snapshot (GPPS) survey by the Five-hundred-meter Aperture Spherical radio Telescope (FAST), varying subpulses drifting of PSR J1857+0057 is detected. The following-up observation confirms the…

高能天体物理现象 · 物理学 2023-10-12 Yi Yan , J. L. Han , C. Wang , P. F. Wang

We present the results of a high-time resolution polarization study of single pulses from pulsars B0950+08 and B1642-03. Single pulses from pulsar B0950+08 sometimes show isolated micropulses without any significant associated subpulse…

高能天体物理现象 · 物理学 2023-10-31 Shubham Singh , Yashwant Gupta , Kishalay De

We have studied the single pulse emission from two pulsars, PSR B0844-35 and PSR B1758-29, over a wide frequency range of 300-750 MHz using the uGMRT. The two pulsars have relatively wide profiles with multiple components, that are a result…

高能天体物理现象 · 物理学 2023-10-31 Rahul Basu , Dipanjan Mitra , George I. Melikidze

Single pulses from radio pulsars contain a wealth of information about emission and propagation in the magnetosphere and insight into their timing properties. It was recently demonstrated that single-pulse emission is responsible for…

太阳与恒星天体物理 · 物理学 2014-05-13 S. Osłowski , W. van Straten , M. Bailes , A. Jameson , G. Hobbs

We report a detailed study of subpulse drifting in four long period pulsars. These pulsars were observed in the Meterwavelength Single-pulse Polarimetric Emission Survey and the presence of phase modulated subpulse drifting was reported in…

高能天体物理现象 · 物理学 2018-03-14 Rahul Basu , Dipanjan Mitra

We present radio observation of a millisecond pulsar PSR J0621+1002 using the Five-hundred-meter Aperture Spherical radio Telescope (FAST). The pulsar shows periodic pulse intensity modulations for both the first and the third pulse…

高能天体物理现象 · 物理学 2021-06-02 S. Q. Wang , J. B. Wang , N. Wang , Y. Feng , S. B. Zhang , K. J. Lee , D. Li , J. G. Lu , J. T. Xie , D. J. Zhou , L. Zhang

We present a total of 48 minutes of observations of the nearby, bright millisecond pulsar PSR J0437-4715 taken at the Parkes radio observatory in Australia. The data were obtained at a central radio frequency of 1380 MHz using a high-speed…

天体物理学 · 物理学 2009-10-30 F. A. Jenet , S. B. Anderson , V. M. Kaspi , T. A. Prince , S. C. Unwin

We present a detailed study of the single radio pulses of PSR B0656+14, a pulsar also known to be a strong pulsed source of high-energy emission. Despite the extensive studies at high-energy wavelengths, there is little or no published work…

天体物理学 · 物理学 2009-11-11 P. Weltevrede , G. A. E. Wright , B. W. Stappers , J. M. Rankin