Zobrazeno 1 - 10
of 37
pro vyhledávání: '"R. T Gangadhara"'
Publikováno v:
The Astrophysical Journal. 911:152
We have developed a collective plasma radio emission model for the radio pulsars based on the implications of the tangent model. The secondary pair (electron–positron) plasma particles get arranged into a phased array like an antenna due to plasma
Autor:
Tridib Roy, R. T. Gangadhara
Publikováno v:
The Astrophysical Journal. 878:148
Pulsar radio emission is not well understood because of a lack of knowledge about the emission geometry and the plasma process involved. We develop a mechanism for pulsar radio emission that takes into account the detailed viewing geometry of pulsars
Autor:
Archana Pai, Sushan Konar, Achamveedu Gopakumar, Biswajit Paul, Sarmistha Banik, Firoza Sutaria, Chandreyee Maitra, Alak Ray, Debades Bandyopadhyay, R. T. Gangadhara, Bhal Chandra Joshi, Yashwant Gupta, Dipankar Bhattacharya, Yogesh Maan, Dipanjan Mukherjee, Manjari Bagchi, Sudip Bhattacharyya
It is an exceptionally opportune time for Astrophysics when a number of next-generation mega-instruments are poised to observe the universe across the entire electromagnetic spectrum with unprecedented data quality. The Square Kilometre Array (SKA) i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a032b05a685ecdce37108ecc36b546ee
http://arxiv.org/abs/1610.08175
http://arxiv.org/abs/1610.08175
Autor:
R. T. Gangadhara
Publikováno v:
The Astrophysical Journal. 710:29-44
The beamed radio emission from relativistic plasma (particles or bunches), constrained to move along the curved trajectories, occurs in the direction of velocity. We have generalized the coherent curvature radiation model to include the detailed geom
Autor:
R. T. Gangadhara
Publikováno v:
The Astrophysical Journal. 628:923-930
The radiation by relativistic plasma particles is beamed in the direction of field line tangents in the corotating frame, but in an inertial frame it is aberrated toward the direction of rotation. We have revised the relation of aberration phase shif
Autor:
R. T. Gangadhara
Publikováno v:
The Astrophysical Journal. 609:335-339
We assume that the relativistic sources moving along the dipolar magnetic field lines emit curvature radiation. The beamed emission occurs in the direction of tangents to the field lines, and to receive it, the sight line must align with the tangent
Autor:
R. T. Gangadhara, Vinod Krishan
Publikováno v:
Pramana. 61:1203-1207
We present a relativistic model for the centrifugal acceleration of plasma bunches and the coherent radio emission in pulsar magnetosphere. We find that rotation broadens the width of leading component compared to the width of trailing component. We
Publikováno v:
Physics of Plasmas. 6:4088-4093
Radiative transfer equations are derived and solved for the stimulated Raman scattering of water maser lines in the astrophysical plasmas with electron density of about 10^6 - 10^7 cm-3. In stimulated Raman scattering, the energy of water maser line
Autor:
R. T. Gangadhara
Publikováno v:
Astrophysics and Space Science. 232:327-336
Pulsars accelerate the charged particles moving along their magnetic field lines due to their rapidly spinning motion. Particles gain maximum energy from pulsars within the light cylinder when they are moving along the field lines perpendicular to th
Autor:
D. Kumar, R. T. Gangadhara
We have developed a model for the polarization of curvature radiation by taking into account the polar-cap-current induced perturbation on the dipolar magnetic field. We present the effects of the polar cap current on the pulsar radio emission in an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e97f8c86910b757af190c806450086d
http://arxiv.org/abs/1202.1921
http://arxiv.org/abs/1202.1921