Zobrazeno 1 - 10
of 112
pro vyhledávání: '"Dipanjan Mitra"'
Publikováno v:
Universe, Vol 10, Iss 6, p 248 (2024)
Radio observations from normal pulsars indicate that the coherent radio emission is excited by curvature radiation from charge bunches. In this review, we provide a systematic description of the various observational constraints on the radio emission
Externí odkaz:
https://doaj.org/article/73fa07ea8f654c20a8de8b6a464f94b1
Publikováno v:
The Astrophysical Journal, Vol 959, Iss 2, p 92 (2023)
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 upgraded Giant Metrewave Radio Telescope. The two pulsars have relatively wide profiles with multiple co
Externí odkaz:
https://doaj.org/article/96dec7c6be704258ad12036decca1b18
Publikováno v:
The Astrophysical Journal, Vol 952, Iss 2, p 151 (2023)
We have observed 123 pulsars with periods longer than 0.1 s in the Meterwavelength Single Pulse Polarimetric Emission Survey. In this work, a detailed study of the polarization behavior of these pulsars has been carried out. We were able to fit the r
Externí odkaz:
https://doaj.org/article/35fbc987d6a94c2bba8bd77235b601b4
Publikováno v:
The Astrophysical Journal, Vol 947, Iss 2, p 86 (2023)
A novel scheme has been developed to show that the observed phase behavior associated with subpulse drifting from two pulsars, J1034−3224 and J1720−2933, can be used to obtain the magnetic field configuration in the partially screened gap (PSG).
Externí odkaz:
https://doaj.org/article/d9d7b97bc1964363bb3e3c2703cf422e
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 512:3589-3601
Coherent radio emission from pulsars originates from excited plasma waves in an ultra-relativistic and strongly magnetized electron-positron pair plasma streaming along the open magnetic field lines of the pulsar. Traditional coherent radio emission
The diverse polarization properties in pulsars are in conflict with applying a unique emission mechanism to the population. The polarization position angle (PPA) traverse in most pulsars shows a S-shaped curve that can be interpreted using the rotati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a28e1757264fdd62497b72d0ac13c9a
A novel scheme has been developed to show that the observed phase behaviour associated with subpulse drifting from two pulsars, J1034$-$3224 and J1720$-$2933, can be used to obtain the magnetic field configuration in the partially screened gap (PSG).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8158cdebe4f63d7b9ff4be98a31ae7dc
Pulsar radio emission mechanism II. On the origin of relativistic Langmuir solitons in pulsar plasma
Observations suggest that coherent radio emission from pulsars is excited in a dense pulsar plasma by curvature radiation from charge bunches. Numerous studies propose that these charge bunches are relativistic charge solitons which are solutions of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f933f7a3dde65892b04579499f6c076e
http://arxiv.org/abs/2208.04894
http://arxiv.org/abs/2208.04894
The radio emission in many pulsars show sudden changes, usually within a period, that cannot be related to the steady state processes within the inner acceleration region (IAR) above the polar cap. These changes are often quasi-periodic in nature, wh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f9055dc8728b4261b98f93484cd7f407
http://arxiv.org/abs/2105.01391
http://arxiv.org/abs/2105.01391
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2021, 647, pp.A101. ⟨10.1051/0004-6361/202039853⟩
Astronomy and Astrophysics-A&A, EDP Sciences, 2021, 647, pp.A101. ⟨10.1051/0004-6361/202039853⟩
Since the launch of the Fermi Gamma-Ray Space Telescope, several hundred gamma-ray pulsars have been discovered, some being radio-loud and some radio-quiet with time-aligned radio and gamma-ray light curves. In the second Fermi Pulsar Catalogue, 117
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3aabf5d548ddb71f2baf363538170550
https://hal.archives-ouvertes.fr/hal-03172713/document
https://hal.archives-ouvertes.fr/hal-03172713/document