Zobrazeno 1 - 10
of 93
pro vyhledávání: '"Melikidze, G."'
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:
http://arxiv.org/abs/2105.01391
We review a physical model where the high brightness temperature of 10$^{25}-10^{30}$ K observed in pulsar radio emission is explained by coherent curvature radiation excited in the relativistic electron-positron plasma in the pulsar magnetosphere.
Externí odkaz:
http://arxiv.org/abs/1510.00103
Models of pulsar radio emission that are based on an inner accelerating region require the existence of very strong and small scale surface magnetic field structures at or near the canonical polar cap. The aim of this paper is to identify a mechanism
Externí odkaz:
http://arxiv.org/abs/1308.2718
We study the radio spectra of two magnetars PSR J1550-5418 and J1622-4950. We argue that they are good candidates for the pulsars with gigahertz-peaked spectra as their observed flux density decreases at frequencies below 7 GHz. We suggest this behav
Externí odkaz:
http://arxiv.org/abs/1305.5346
Publikováno v:
Astrophys Space Sci (2015) 359: 31
In this paper we give the first attempt to model the evolution of the spectrum of PSR B1259$-$63 radio emission while the pulsar orbits the companion Be star. As suggested by Kijak et al. (Mon. Not. R. Astron. Soc. 418:L114, 2011a) this binary system
Externí odkaz:
http://arxiv.org/abs/1212.6630
The radio pulsar models based on the existence of an inner accelerating gap located above the polar cap rely on the existence of a small scale, strong surface magnetic field $B_s$. This field exceeds the dipolar field $B_d$, responsible for the braki
Externí odkaz:
http://arxiv.org/abs/1206.1790
This work is a continuation of two previous papers of a series, in which we examined the pulse-width statistics of normal radio pulsars. In the first paper we compiled the largest ever database of pulsars with interpulses in their mean profiles. In t
Externí odkaz:
http://arxiv.org/abs/1205.1297
Publikováno v:
Mon. Not. R. Astron. Soc. 418, L114-L118 (2011)
We study the radio spectrum of PSR B1259-63 orbiting around the Be star LS 2883 and show that the shape of the spectrum depends on the orbital phase. At frequencies below 3 GHz PSR B1259-63 flux densities are lower when measured near the periastron p
Externí odkaz:
http://arxiv.org/abs/1109.1013
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 three EPIC instruments over 50 ks exposure time. Its spectrum was bes
Externí odkaz:
http://arxiv.org/abs/0806.0245
We propose a model, which naturally explains an unusual thermal X-ray emission, observed from PSR J1119-6127. The model is based on the assumption that the pulsar magnetic field near the stellar surface differs significantly from the pure dipole fiel
Externí odkaz:
http://arxiv.org/abs/astro-ph/0612683