64 citations · 541 across the 45 of their papers we have counts for
18 papers · 1 filter
Gravitational excitation of high frequency QPOs
Zdeněk Stuchlík, Sushan Konar, John C. Miller +1
We discuss the possibility that high-frequency QPOs in neutron-star binary systems may result from forced resonant oscillations of matter in the innermost parts of the accretion di…
Members of the double pulsar system PSR J0737-3039 : neutron stars or strange stars ?
Manjari Bagchi, Jishnu Dey, Sushan Konar +2
One interesting method of constraining the dense matter Equations of State is to measure the advancement of the periastron of the orbit of a binary radio pulsar (when it belongs to…
Strange Pulsar Hypothesis
Raka Dona Ray Mandal, Monika Sinha, Manjari Bagchi +3
It appears that there is a genuine shortage of radio pulsars with surface magnetic fields significantly smaller than Gauss. We propose that the pulsars with very low ma…
Why do millisecond pulsars have weaker magnetic fields compared to ordinary pulsars?
Arnab Rai Choudhuri, Sushan Konar
Millisecond pulsars, with magnetic fields weaker by three to four orders compared to those of ordinary pulsars, are presumed to be neutron stars spun up by binary accretion. We exp…
Of Neutrinos and Magnetars
Sushan Konar
We discuss the nature of neutrino propagation in the presence of strong magnetic fields of Magnetars.
The Magnetar Fields
Sushan Konar
We discuss the nature of evolution of the magnetic field in Magnetars.
Diamagnetic Screening of the Magnetic Field in Accreting Neutron Stars II -- The effect of Polar Cap Widening
Sushan Konar, Arnab R. Choudhury
Recently, we have proposed a model for the screening of the magnetic field of an accreting neutron star by the accreted material flowing from the polar regions towards the equator…
Diamagnetic Screening of the Magnetic Field in Accreting Neutron Stars
Sushan Konar, Arnab Rai Choudhuri
A possible mechanism for screening of the surface magnetic field of an accreting neutron star, by the accreted material, is investigated. In particular, we investigate the nature o…
Diamagnetic Screening of the Magnetic Field in Accreting Neutron Stars
Arnab Rai Choudhuri, Sushan Konar
A possible mechanism for screening of the surface magnetic field of an accreting neutron star, by the accreted material, is investigated. We model the material flow in the surface…
Torque Decay in the Pulsar (P,P_dot) Diagram. Effects of Crustal Ohmic Dissipation and Alignment
Thomas M. Tauris, Sushan Konar
We investigate the evolution of pulsars in the (P,P-dot) diagram. We first present analytical formulae to follow the evolution of a pulsar using simple exponential models for magne…
Magnetic Field Evolution of Accreting Neutron Stars IV - Effect of the Curvature of Space-Time
Sushan Konar
The evolution of the magnetic field in an accreting neutron star is investigated using a fully general relativistic treatment and assuming that initially the currents supporting th…
Evolution of the Magnetic Field in Accreting Neutron Stars
Sushan Konar
There has been sufficient observational indication suggesting a causal connection between the binary history of neutron stars and the evolution of their magnetic field. In particul…
Magnetic Fields of Neutron Stars
Sushan Konar, Dipankar Bhattacharya
The evolution of the magnetic field is investigated for isolated as well as binary neutron stars. The overall nature of the field evolution is seen to be similar for an initial cru…
Evolution of Multipolar Magnetic Fields in Isolated Neutron Stars and its effect on Pulsar Radio Emission
D. Mitra, S. Konar, D. Bhattacharya +3
The evolution of the multipolar structure of the magnetic field of isolated neutron stars is studied assuming the currents to be confined to the crust. Lower orders () of m…
Whither Strange Pulsars ?
Sushan Konar
Both neutron stars and strange stars are capable of supporting fast rotations observed in pulsars. On the basis of this it has been argued that some of the pulsars could be strange…
Evolution of Multipolar Magnetic Field in Isolated Neutron Stars
Dipanjan Mitra, Sushan Konar, Dipankar Bhattacharya
The evolution of the multipolar structure of the magnetic field of isolated neutron stars is studied assuming the currents to be confined to the crust. We find that except for mult…
Magnetic Field Evolution of Accreting Neutron Stars - III
Sushan Konar, Dipankar Bhattacharya
The evolutionary scenario of the neutron star magnetic field is examined assuming a spindown-induced expulsion of magnetic flux originally confined to the core, in which case the e…
Magnetic Field Evolution of Accreting Neutron Stars - II
Sushan Konar, Dipankar Bhattacharya
We investigate the evolution of the magnetic field of isolated pulsars and of neutron stars in different kinds of binary systems, assuming the field to be originally confined to th…