Giant pulses of the Crab Nebula pulsar as an indicator of a strong electromagnetic wave
- Авторлар: Popov M.V.1, Rudnitskii A.G.1, Soglasnov V.A.1
- 
							Мекемелер: 
							- Astro Space Center, Lebedev Physical Institute
 
- Шығарылым: Том 61, № 3 (2017)
- Беттер: 178-186
- Бөлім: Article
- URL: https://journals.rcsi.science/1063-7729/article/view/190387
- DOI: https://doi.org/10.1134/S1063772917030064
- ID: 190387
Дәйексөз келтіру
Аннотация
The spectra and visibility functions of giant pulses of the Crab Nebula pulsar derived from VLBI observations carried out through the “RadioAstron” project in 2015 are analyzed. Parameters of the scattering of the pulses in the interstellar medium are measured, namely, the scattering time and decorrelation bandwidth. A comparative analysis of the shapes of the spectra and visibility functions of giant pulses obtained in real observations and via modeling of their scattering is carried out. The results suggest the presence of short bursts (dt < 30 ns) in the structure of the giant pulses at 1668 MHz, whose brightness temperatures exceed 1038 K. These pulses propagate in the pulsar magnetosphere in a strong electromagneticwave regime, leading to the generation of additional radiation perpendicular to the direction of propagation of the giant pulses. This radiation may be associated with anomalous components of the mean pulse profile observed at frequencies above 4 GHz.
Авторлар туралы
M. Popov
Astro Space Center, Lebedev Physical Institute
							Хат алмасуға жауапты Автор.
							Email: mwpopov@gmail.com
				                					                																			                												                	Ресей, 							Profsoyuznaya ul. 84/32, Moscow, 117997						
A. Rudnitskii
Astro Space Center, Lebedev Physical Institute
														Email: mwpopov@gmail.com
				                					                																			                												                	Ресей, 							Profsoyuznaya ul. 84/32, Moscow, 117997						
V. Soglasnov
Astro Space Center, Lebedev Physical Institute
														Email: mwpopov@gmail.com
				                					                																			                												                	Ресей, 							Profsoyuznaya ul. 84/32, Moscow, 117997						
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