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相关论文: Characterizing the Nature of Periodic Amplitude Mo…

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Periodic modulations are seen in normal period pulsars ($P >$ 0.1 sec) over timescales ranging from a few seconds to several minutes. Such modulations have usually been associated with the phenomenon of subpulse drifting. A number of recent…

高能天体物理现象 · 物理学 2020-02-12 Rahul Basu , Dipanjan Mitra , Giorgi I. Melikidze

We report the detection of pulse-to-pulse periodic intensity modulations, in observations of recycled pulsars. Even though the detection of individual pulses was generally not possible due to their low flux density and short duration,…

天体物理学 · 物理学 2009-11-07 R. T. Edwards , B. W. Stappers

A large sample of about two hundred pulsars have been observed to study their subpulse modulation at an observing wavelength of (when achievable) both 21 and 92 cm using the Westerbork Synthesis Radio Telescope. For 57 pulsars drifting…

天体物理学 · 物理学 2009-11-13 Patrick Weltevrede , Ben Stappers , R. T. Edwards

In a search for periodic variation in the arrival times of pulses from 151 young, energetic pulsars, we have identified seven cases of modulation consistent with one or two harmonics of a single fundamental with time-scale 0.5-1.5 yr. We…

太阳与恒星天体物理 · 物理学 2015-11-19 Matthew Kerr , George Hobbs , Simon Johnston , Ryan Shannon

A detailed analysis of nulling was conducted for the pulsars studied in the Meterwavelength Single-pulse Polarimetric Emission Survey. We characterized nulling in 36 pulsars including 17 pulsars where the phenomena were reported for the…

高能天体物理现象 · 物理学 2017-09-13 Rahul Basu , Dipanjan Mitra , George I. Melikidze

A large sample of pulsars has been observed to study their subpulse modulation at an observing wavelength (when achievable) of both 21 and 92 cm using the Westerbork Synthesis Radio Telescope. In this paper we present the 92-cm data and a…

天体物理学 · 物理学 2009-11-13 P. Weltevrede , B. W. Stappers , R. T. Edwards

The multi-drifting subpulse behaviors in PSR J2007+0910 have been studied carefully with the high sensitivity observations of the Five-hundred-meter Aperture Spherical radio Telescope (FAST) at 1250 MHz. We found that there are at least six…

高能天体物理现象 · 物理学 2023-11-07 Xin Xu , Lunhua Shang , Qijun Zhi , Shijun Dang , Shi Dai , Jie Tian , Yan Yu , Qingying Li , Shuo Xiao , Dandan Zhang

In this study we propose a classification scheme for the phenomenon of subpulse drifting in pulsars. We have assembled an exhaustive list of pulsars which exhibit subpulse drifting from previously published results as well as recent…

高能天体物理现象 · 物理学 2018-10-31 Rahul Basu , Dipanjan Mitra , George I. Melikidze , Anna Skrzypczak

A large sample of pulsars was observed as part of the Meterwavelength Single-pulse Polarimetric Emission Survey. We carried out a detailed fluctuation spectral analysis which revealed periodic features in 46% pulsars including 22 pulsars…

高能天体物理现象 · 物理学 2016-12-14 Rahul Basu , Dipanjan Mitra , George I. Melikidze , Krzysztof Maciesiak , Anna Skrzypczak , Andrzej Szary

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 report a detailed observational study of the single pulses from the pulsar J1822$-$2256. The pulsar shows the presence of subpulse drifting, nulling as well as multiple emission modes. During these observations the pulsar existed…

高能天体物理现象 · 物理学 2018-02-21 Rahul Basu , Dipanjan Mitra

We present a detailed single-pulse analysis for PSR B1929+10 based on observations with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). The main pulse and interpulse are found to be modulated with a periodicity of $\sim12$…

高能天体物理现象 · 物理学 2021-03-24 F. F. Kou , W. M. Yan , B. Peng , J. G. Lu , K. Liu , C. M. Zhang , R. G. Strom , L. Wang , J. P. Yuan , Rai Yuen , Y. Z. Yu , J. M. Yao , B. Liu , J. Yan , P. Jiang , C. J. Jin , D. Li , L. Qian , Y. L. Yue , Y. Zhu

We present the results of a systematic, unbiased search for subpulse modulation of 187 pulsars performed with the Westerbork Synthesis Radio Telescope (WSRT) in the Netherlands at an observing wavelength of 21 cm. Using new observations and…

天体物理学 · 物理学 2009-11-11 P. Weltevrede , R. T. Edwards , B. W. Stappers

We report on the pulse-to-pulse energy distributions and phase-resolved modulation properties for catalogued pulsars in the southern High Time Resolution Universe intermediate-latitude survey. We selected the 315 pulsars detected in a…

In this study, we report on a detailed single pulse polarimetric analysis of the radio emission from the pulsar J2321+6024 (B2319+60) observed with the Giant Metrewave Radio Telescope, over wide frequencies ranging between 300 to 500 MHz…

高能天体物理现象 · 物理学 2022-08-15 Sk. Minhajur Rahaman , Rahul Basu , Dipanjan Mitra , George I. Melikidze

We have carried out a detailed study of single pulse emission from the pulsar B2000+40 (J2002+4050), observed at 1.6 GHz frequencies using the Effelsberg radio telescope. The pulsar has three components which are not well separated, with…

高能天体物理现象 · 物理学 2020-09-14 Rahul Basu , Wojciech Lewandowski , Jarosław Kijak

Using two observations obtained with the Five-hundred-meter Aperture Spherical radio Telescope (FAST), we present a detailed single-pulse analysis of the high-nulling pulsar PSR J1820-0509. We measure an exceptionally high nulling fraction…

The phenomenon of profile mode switching in pulsars, where the stable average pulse profile changes to another stable state on the timescale of a pulsar's period, remains poorly understood. We sought to understand how pulsars undergo…

高能天体物理现象 · 物理学 2019-02-13 Casey Brinkman , Dipanjan Mitra , Joanna Rankin

We report the observations of single pulse emission from the pulsar B0809+74 at 150 MHz using the Polish LOFAR station, PL-611. The three major phenomena of subpulse drifting, nulling and mode changing associated with single pulse…

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;…

高能天体物理现象 · 物理学 2015-06-19 N. J. Young , P. Weltevrede , B. W. Stappers , A. G. Lyne , M. Kramer
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