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Related papers: The two emission states of PSR B1534+12

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Four pulsars, PSRs J1838+1523, J1901+0510, J1909+0007 and J1929+1844, are found to exhibit bright and weak emission states from sensitive FAST observations. New FAST observations have measured their polarization properties for the two…

High Energy Astrophysical Phenomena · Physics 2023-06-28 Yi Yan , P. F. Wang , J. L. Han

We report on a detailed analysis of the radio emission during the different modes of the pulsar J0826+2637 (B0823+26), observed using the Giant Meterwave Radio Telescope at 306-339 MHz observing frequencies. The pulsar profile has a…

High Energy Astrophysical Phenomena · Physics 2019-06-19 Rahul Basu , Dipanjan Mitra

We present an analysis of 4 nulling pulsars with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). For PSR J1649+2533, our results suggest mode changing rather than subpulse drifting as previously reported at lower…

High Energy Astrophysical Phenomena · Physics 2025-11-07 Jingbo Wang , Jintao Xie , Jing Zou , Jianfei Tang

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

The emission from PSR J1107-5907 is erratic. Sometimes the radio pulse is undetectable, at other times the pulsed emission is weak, and for short durations the emission can be very bright. In order to improve our understanding of these…

We present an analysis of the emission behaviour of PSR J1107-5907, a source known to exhibit separate modes of emission, using observations obtained over approximately 10 yr. We find that the object exhibits two distinct modes of emission;…

High Energy Astrophysical Phenomena · Physics 2015-06-19 N. J. Young , P. Weltevrede , B. W. Stappers , A. G. Lyne , M. Kramer

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…

Astrophysics · Physics 2009-11-11 P. Weltevrede , G. A. E. Wright , B. W. Stappers , J. M. Rankin

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…

High Energy Astrophysical Phenomena · Physics 2022-03-30 Lin Wang , Ye-Zhao Yu , Feifei Kou , Kuo Liu , Xinxin Wang , Bo Peng

How pulsars radiate is a long-standing problem. Detailed polarization measurements of individual pulses shed light on currently unknown emission processes. Recently, based on supersensitive observations, dwarf pulses have been recognized as…

High Energy Astrophysical Phenomena · Physics 2024-03-19 Yi Yan , J. L. Han , D. J. Zhou , L. Xie , F. F. Kou , P. F. Wang , C. Wang , T. Wang

We present a detailed single-pulse study of the long-period pulsar PSR J2129+4119 using high-sensitivity FAST observations. Despite locating well below the traditional death line, the pulsar exhibits sustained and multi-modal emission…

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 have continued our long term study of the double-neutron-star binary pulsar PSR B1534+12, using new instrumentation to make very high precision measurements at the Arecibo Observatory. We have significantly improved our solution for the…

Astrophysics · Physics 2009-11-07 I. H. Stairs , S. E. Thorsett , J. H. Taylor , A. Wolszczan

We report on the variation in the single-pulse emission from PSR J1900+4221 (CRAFTS 19C10) observed at frequency centered at 1.25 GHz using the Five-hundred-meter Aperture Spherical radio Telescope. The integrated pulse profile shows two…

We present a detailed study of the single radio pulses of PSR B0656+14. The emission can be characterized by two separate populations of pulses: bright pulses have a narrow ``spiky'' appearance in contrast to the underlying weaker broad…

Astrophysics · Physics 2007-05-23 P. Weltevrede , B. W. Stappers , J. M. Rankin , G. A. E. Wright

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…

High Energy Astrophysical Phenomena · Physics 2016-08-31 Kaustubh Rajwade , Andrew Seymour , Duncan R Lorimer , Aris Karastergiou , Maciej Serylak , Maura A McLaughlin , Jean M Griessmeier

PSR J1023+0038 (J1023) is a binary system hosting a neutron star and a low mass companion. J1023 is the best studied transitional pulsar, alternating a faint eclipsing millisecond radio pulsar state to a brighter X-ray active state. At…

High Energy Astrophysical Phenomena · Physics 2017-09-27 S. Campana , F. Coti Zelati , A. Papitto , N. Rea , D. F. Torres , M. C. Baglio , P. D'Avanzo

We describe PSR J1926-0652, a pulsar recently discovered with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). Using sensitive single-pulse detections from FAST and long-term timing observations from the Parkes 64-m radio…

Pulsars radiate radio signals when they rotate. However, some old pulsars often stop radiating for some periods. The underlying mechanism remains unknown, while the magnetosphere during nulling phases is hard to probe due to the absence of…

High Energy Astrophysical Phenomena · Physics 2023-08-21 X. Chen , Y. Yan , J. L. Han , C. Wang , P. F. Wang , W. C. Jing , K. J. Lee , B. Zhang , R. X. Xu , T. Wang , Z. L. Yang , W. Q. Su , N. N. Cai , W. Y. Wang , G. J. Qiao , J. Xu , D. J. Zhou

We report new results obtained from multi-frequency observations of PSR B0826-34 with the Giant Metrewave Radio Telescope (GMRT). (1) We find no evidence of weak emission during the typical long null state of this pulsar, simultaneously at…

Astrophysics · Physics 2009-11-13 B. Bhattacharyya , Y. Gupta , J. Gil

In our work, we analyse $5\times10^{4}$ single pulses from the recycled pulsar PSR J2222$-$0137 in one of its scintillation maxima observed by the Five-hundred-meter Aperture Spherical radio Telescope (FAST). PSR J2222$-$0137 is one of the…

High Energy Astrophysical Phenomena · Physics 2023-10-24 X. L. Miao , W. W. Zhu , M. Kramer , P. C. C. Freire , L. Shao , M. Yuan , L. Q. Meng , Z. W. Wu , C. C. Miao , Y. J. Guo , D. J. Champion , E. Fonseca , J. M. Yao , M. Y. Xue , J. R. Niu , H. Hu , C. M. Zhang
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