208 citations · 1.7k across the 42 of their papers we have counts for
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Exploring the remarkable subpulse drift and polarization properties of PSR B0818-41
Bhaswati Bhattacharyya, Yashwant Gupta, Janusz Gil
PSR B0818-41 is one of the few pulsars which show multiple drift regions having well defined phase relationship. In this paper we report new results from the multifrequency GMRT ob…
XMM-Newton Observations of Radio Pulsars B0834+06 and B0826-34 and Implications for Pulsar Inner Accelerator
J. Gil, F. Haberl, G. Melikidze +2
We report the X-ray observations of two radio pulsars with drifting subpulses: B0834 + 06 and B0826 - 34 using \xmm\. PSR B0834 + 06 was detected with a total of 70 counts from the…
On the Present and Future of Pulsar Astronomy
W. Becker, J. Gil, B. Rudak
To face recent observational results obtained in multi-wavelength studies from neutron stars and pulsars with the various theoretical models and to discuss on future perspectives o…
Thermal radiation from hot polar cap in pulsars
Janusz Gil, George Melikidze, Bing Zhang
Thermal radiation from hot polar caps is examined in radio pulsars with drifting subpulses. It is argued that if these subpulses correspond to sparking discharges of the inner acce…
Formation of a Partially-Screened Inner Acceleration Region in Radio Pulsars: Drifting Subpulses and Thermal X-Ray Emission from Polar Cap Surface
Janusz Gil, George Melikidze, Bing Zhang
The subpulse drifting phenomenon in pulsar radio emission is considered within the partially screened inner gap model, in which the sub-Goldreich-Julian thermionic flow of iron ion…
On the origins of part-time radio pulsars
Bing Zhang, Janusz Gil, Jaroslaw Dyks
Growing evidence suggests that some radio pulsars only act sporadically. These "part-time'' pulsars include long-term nulls, quasi-periodic radio flares in PSR B1931+24, as well as…
Interrelation between radio and X-ray signatures of drifting subpulses in pulsars
Janusz Gil, George Melikidze, Bing Zhang
We examined a model of partially screened gap region above the polar cap, in which the electron-positron plasma generated by sparking discharges coexists with thermionic flow eject…
On the pulse-width statistics in radio pulsars
Marcin Kolonko, Janusz Gil, Krzysztof Maciesiak
The Monte Carlo simulations of pulsar periods, pulse-widths and magnetic inclination angles are performed. Using the available observational data sets we study a possible trial par…
Unraveling the drift behaviour of the remarkable pulsar PSR B0826-34
Y. Gupta, J. Gil, J. Kijak +1
We present new results from high sensitivity GMRT observations of PSR B0826-34. We provide a model to explain the observed subpulse drift properties of this pulsar, including the a…
Constraining vacuum gap models of pulsar radio emission using the intensity modulation index
Janusz Gil, Fredrick A. Jenet
Recent observations suggest that the level of pulse-to-pulse intensity modulation observed in a given radio pulsar may depend on its period and period derivative. Such a ``modulati…
The intrinsic intensity modulation of PSR B1937+21 at 1410 MHz
Fredrick A. Jenet, Janusz Gil
The single-pulse properties of the millisecond radio pulsar PSR B1937+21 are studied in the 1410 MHz radio band. Aside from occasional ``giant pulses'' occurring in restricted regi…
Curvature radiation in pulsar magnetospheric plasma
Janusz Gil, Yuri Lyubarsky, George I. Melikidze
We consider the curvature radiation of the point-like charge moving relativistically along curved magnetic field lines through a pulsar magnetospheric electron-positron plasma. We…
The braking indices in pulsar emission models
F. Wu, R. X. Xu, Janusz Gil
Using the method proposed in a previous paper, we calculate pulsar braking indices in the models with torque contributions from both inner and outer accelerating regions, assuming…
Using the Intensity Modulation Index to Test Pulsar Radio Emission Models
F. A. Jenet, J. A. Gil
This letter explores the possibility of testing pulsar radio emission models by observing pulse-to-pulse intensity modulation. It is shown that a relationship between a pulsar's pe…
Drifting subpulses and inner acceleration regions in radio pulsars
Janusz Gil, George I. Melikidze, Ulrich Geppert
The classical vacuum gap model of Ruderman & Sutherland, in which spark-associated subbeams of subpulse emission circulate around the magnetic axis due to the EB drift, provides a…
Inner vacuum gap formation and drifting subpulses in pulsars
Janusz A. Gil, George I. Melikidze
The problem of formation of the inner vacuum gap in neutron stars with is considered. It is argued by means of the condition , where is the…
On the formation of inner vacuum gaps in radio pulsars
Janusz Gil, George I. Melikidze
The problem of formation of the Ruderman-Sutherland type inner vacuum gap in neutron stars with is considered. It is argued by means of the condition $T_i/T_…
Vacuum Gap Model for PSR B0943+10
Janusz A. Gil, George I. Melikidze, Dipanjan Mitra
PSR B0943+10 is known to show remarkably stable drifting subpulses, which can be interpreted in terms of a circumferential motion of 20 sparks, each completing one circulation arou…
Modelling of surface magnetic field in neutron stars: application to radio pulsars
Janusz A. Gil, George I. Melikidze, Dipanjan Mitra
We propose a vacuum gap (VG) model which can be applied uniformly for normal and high magnetic field pulsars. The model requires strong and non-dipolar surface magnetic field near…
Vacuum gaps in pulsars and PSR J2144-3933
Janusz Gil, Dipanjan Mitra
In this paper we revisit the radio pulsar death line problem within the framework of curvature radiation and/or inverse compton scattering induced vacuum gap model above neutron st…
The spark-associated soliton model for pulsar radio emission
George Melikidze, Janusz Gil, Avtandil Pataraya
We propose a new, self-consistent theory of coherent pulsar radio emission based on the non-stationary sparking model of Ruderman & Sutherland (1975), modified by Gil & Sendyk (200…
Spark Model for Pulsar Radiation Modulation Patterns
Janusz Gil, Marek Sendyk
A non-stationary polar gap model first proposed by Ruderman & Sutherland (1975) is modified and applied to spark-associated pulsar emission at radio wave-lengths. It is argued that…
On the optical pulsations from the Geminga pulsar
Janusz Gil, David Khechinashvili, George Melikidze
We present a model for generation mechanisms of the optical pulsations recently detected from the Geminga pulsar. We argue that this is just a synchrotron radiation emitted along o…
Nature of eclipsing pulsars
David Khechinashvili, George Melikidze, Janusz Gil
We present a model for pulsar radio eclipses in some binary systems, and test this model for PSRs B1957+20 and J2051-0827. We suggest that in these binaries the companion stars are…