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Related papers: Mode Switching and Subpulse Drifting in PSR B0826-…

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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…

High Energy Astrophysical Phenomena · Physics 2018-03-14 Rahul Basu , Dipanjan Mitra

In this paper, we investigate the emission properties of PSR J1727-2739, whose mean pulse profile has two main components, by analysing five single-pulse observations made using the Parkes 64-m radio telescope with a central frequency of…

High Energy Astrophysical Phenomena · Physics 2021-10-22 Rukiye Rejep , N. Wang , W. M. Yan , Z. G. Wen

We report the discovery of a remarkable subpulse drift pattern in the relatively less studied wide profile pulsar, B0818-41, using high sensitivity GMRT observations. We find simultaneous occurrence of three drift regions with two different…

Astrophysics · Physics 2008-11-26 B. Bhattacharyya , Y. Gupta , J. Gil , M. Sendyk

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…

High Energy Astrophysical Phenomena · Physics 2023-09-08 Rahul Basu , Wojciech Lewandowski , Jarosław Kijak , Bartosz Śmierciak , Marian Soida , Leszek Błaszkiewicz , Andrzej Krankowski

PSR B0031-07 is well known to exhibit three different modes of drifting sub-pulses (mode A, B and C). It has recently been shown that in a multifrequency observation, consisting of 2700 pulses, all driftmodes were visible at low…

Astrophysics · Physics 2009-11-13 J. M. Smits , D. Mitra , B. W. Stappers , J. Kuijpers , P. Weltevrede , A. Jessner , Y. Gupta

PSR J0026-1955 was independently discovered by the Murchison Widefield Array (MWA) recently. The pulsar exhibits subpulse drifting, where the radio emission from a pulsar appears to drift in spin phase within the main pulse profile, and…

High Energy Astrophysical Phenomena · Physics 2023-07-19 Parul Janagal , Samuel J. McSweeney , Manoneeta Chakraborty , N. D. Ramesh Bhat

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

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…

High Energy Astrophysical Phenomena · Physics 2018-02-21 Rahul Basu , Dipanjan Mitra

We present a single pulse study of pulsar B1944+17, whose non-random nulls dominate nearly 70% of its pulses and usually occur at mode boundaries. When not in the null state, this pulsar displays four bright modes of emission, three of…

Solar and Stellar Astrophysics · Physics 2010-07-13 Isabel M. Kloumann , Joanna M. Rankin

In this work, we observe the nearby pulsar, PSR B1929$+$10, using the Five-hundred-meter Aperture Spherical radio Telescope (FAST). We find, for the first time, two new emission components with an extremely weak observed flux density of…

High Energy Astrophysical Phenomena · Physics 2025-07-02 Zhengli Wang , Jiguang Lu , Weiyang Wang , Shunshun Cao , Jinchen Jiang , Jiangwei Xu , Kejia Lee , Enwei Liang , Hongguang Wang , Renxin Xu

We establish that for PSR B0031-07 the orthogonal polarization modes switch at a single pulse level synchronously with the periodic drifting subpulses seen in total intensity. There are only four other pulsars known for which this…

High Energy Astrophysical Phenomena · Physics 2020-01-08 Cristina D. Ilie , Patrick Weltevrede , Simon Johnston , Tianyue Chen

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…

High Energy Astrophysical Phenomena · Physics 2026-03-30 Zefeng Tu , Rushuang Zhao , Hui Liu , Biping Gong , D. Li , P. Wang , Chenchen Miao , Q. J. Zhi , S. J. Dang , S. D. Wang , Q. Zhou , Z. J. Zhang , Xu Zhu , R. W. Tian , H. W. Xu , Yi Zhou , D. Y. Yan

We performed simultaneous observations at 326.5 MHz with the Ooty Radio Telescope and at 326, 610 and 1308 MHz with the Giant Meterwave Radio Telescope for a sample of 12 pulsars, where frequency dependent single pulse behaviour was…

High Energy Astrophysical Phenomena · Physics 2017-08-02 Arun Naidu , Bhal Chandra Joshi , P. K Manoharan , M. A Krishnakumar

Drifting subpulse patterns in pulsar signals are frequently interpreted in terms of a model in which a rotating ring of sparks on the polar cap gives rise to emission from regions of the magnetsophere connected to the sparks by dipolar…

Astrophysics · Physics 2009-11-10 R. T. Edwards , B. W. Stappers

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,…

Astrophysics · Physics 2009-11-07 R. T. Edwards , B. W. Stappers

The pair of drifting subpulses of the radio pulsar PSR B0031-07 appear to be well separated from each other on the average, overlapping at less than one thirtieth of the peak energy. Strictly, the integrated profile of the pair (after…

Astrophysics · Physics 2009-10-31 M. Vivekanand , B. C. Joshi

Many radio pulsars have stable pulse profiles, but some exhibit mode changing where the profile switches between two or more quasi-stable modes of emission. So far, these effects had only been seen in relatively slow pulsars, but we show…

High Energy Astrophysical Phenomena · Physics 2018-10-31 Nikhil Mahajan , Marten H. van Kerkwijk , Robert Main , Ue-Li Pen

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…

High Energy Astrophysical Phenomena · Physics 2023-10-12 Yi Yan , J. L. Han , C. Wang , P. F. Wang

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