English
Related papers

Related papers: Drifting subpulse survey at 21 cm

200 papers

We present the statistical 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 (Weltevrede et…

Astrophysics · Physics 2007-05-23 P. Weltevrede , R. T. Edwards , B. W. Stappers

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…

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

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…

Astrophysics · Physics 2009-11-13 P. Weltevrede , B. W. Stappers , R. T. Edwards

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…

Astrophysics · Physics 2009-11-13 Patrick Weltevrede , Ben Stappers , R. T. Edwards

We report on the subpulse modulation properties of 1198 pulsars using the Thousand-Pulsar-Array programme on MeerKAT. About 35% of the analysed pulsars exhibit drifting subpulses which are more pronounced towards the deathline, consistent…

We present a detailed analysis of sub-pulse modulations in nine pulsars which show evidence of changes in sub-pulse drift direction as a function of pulse longitude in the Thousand Pulsar Array single pulse survey with MeerKAT. We confirm…

High Energy Astrophysical Phenomena · Physics 2025-10-02 Haoyue Wang , Michael J. Keith , Patrick Weltevrede , Geoffrey Wright , Bhaswati Bhattacharyya , JuiAn Hsu , Xiaoxi Song

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…

High Energy Astrophysical Phenomena · Physics 2016-12-14 Rahul Basu , Dipanjan Mitra , George I. Melikidze , Krzysztof Maciesiak , Anna Skrzypczak , Andrzej Szary

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…

High Energy Astrophysical Phenomena · Physics 2020-02-12 Rahul Basu , Dipanjan Mitra , Giorgi I. Melikidze

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…

High Energy Astrophysical Phenomena · Physics 2018-10-31 Rahul Basu , Dipanjan Mitra , George I. Melikidze , Anna Skrzypczak

Sub-pulse drifting in pulsar radio emission is considered to be one of the most promising phenomenon for uncovering the underlying physical processes. Here we present a detailed study of such a phenomenon in observations of PSR…

High Energy Astrophysical Phenomena · Physics 2021-11-17 Parul Janagal , Manoneeta Chakraborty , N. D. Ramesh Bhat , Bhaswati Bhattacharya , Samuel J. McSweeney

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

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

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

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

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

We present an analysis of the subpulse drift in PSR J1750-3503, which is characterized by abrupt transitions of drift direction. As the pulsar does not exhibit other mode changes or clear nulling, it is an ideal candidate system for…

High Energy Astrophysical Phenomena · Physics 2022-07-27 Andrzej Szary , Joeri van Leeuwen , Geoff Wright , Patrick Weltevrede , Crispin H. Agar , Caterina Tiburzi , Yogesh Maan , Michael J. Keith

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

The phenomenon of subpulse drifting may hold the key to understanding the pulsar emission mechanism. Here, we report on new observations of PSR J0034-0721 (B0031-07), carried out with the Murchison Widefield Array at 185 MHz. We observe…

High Energy Astrophysical Phenomena · Physics 2017-03-08 S. J. McSweeney , N. D. R. Bhat , S. E. Tremblay , A. A. Deshpande , S. M. Ord

We have analyzed 5.5 years of timing observations of 7 ``slowly'' rotating radio pulsars, made with the Westerbork Synthesis Radio Telescope. We present improved timing solutions and 30, mostly small new glitches. The most interesting…

Astrophysics · Physics 2007-05-23 G. H. Janssen , B. W. Stappers
‹ Prev 1 2 3 10 Next ›