Neshpor Yury Iosifovich General data:
Born: 22.11.1932
Place of birth: Gorky city, Gorky region, Russian SSR
Studied in: А. A. Zhdanov Gorky Polytechnic Institute (since 2007 R. E. Alekseyev Nizhny Novgorod State Technical University) (1950-1955);
Key interests: decameter radio astronomy. PhD Thesis: Research X-ray solar flares radio astronomical method (1965 N. I. Lobachevsky Gorky State University);
Biography:
He was born on November 22, 1932 in the Gorky city of Gorky region of the Russian SSR.
During 1950-1955 A. A. Zhdanov Gorky Polytechnic Institute. He graduated from the specialty "radio engineering".
Since 1955 he has been an employee of the Crimean Astrophysical Observatory. For some time, he has been working as the deputy head of the gamma-ray astronomy laboratory.
In 1965 he defended his dissertation "Study of X-rays of solar flares by radio astronomy" (decision of the Council of M. I. Lobachevsky Gorky State University).
In the 80s of the twentieth century together with Ziskin Yu. L. analyzed the observation data of Cyg X-3 and Cas γ -1.
In 2006, the scientist was awarded the title of senior researcher.
Yu. I. Neshpor is an astrophysicist, a specialist in the field of ultrahigh energy radiation. In 1950-1970 he was one of the first in the world to study the X-ray radiation of solar flares by radio astronomy. He showed that the ionizing radiation of solar flares is not identical to radiation, which creates a calm ionosphere. The X-ray flux of solar flares, which causes additional ionization in the ionosphere, exceeds the flux from the calm Sun by tens or more times. Solar flares differ not only in the intensity of X-rays, but also in the spectrum. During some flashes, there is a significant increase in X-ray radiation in the region of 100 keV. This was the time of the birth of X-ray astronomy. A series of works on this topic formed the basis of his PhD thesis.
Since 1973 he has been working on gamma-ray astronomy of ultrahigh energies. He participated in the creation of the world's first dual-generation gamma-ray telescope (GT-48).
Yu.I. Neshpor with laboratory staff for the first time, five new gamma-ray sources of ultrahigh energies were discovered by the staff of the laboratory. He was actively involved in the search for periodicity in the emission of gamma-sources of ultrahigh energies. Together with colleagues he showed the presence of periods of 4.8 hours and 323 days in the radiation of the dual system Swan X-3, periodic radiation of the Heming pulsar was detected, the presence of a period of 23 days in the gamma radiation of the galaxy Mk 501 was confirmed. OB2 in the Swan X-3 system, as well as gamma radiation from the active nuclei of the galaxies ZS 66A and BL Lac. His positive correlation between ultrahigh-energy gamma-ray fluxes and optical radiation of the 66A and BL Lac blazars suggests that the source of both types of radiation is the same population of high- and ultrahigh-energy electron particles. It is shown that the spectrum of electromagnetic radiation of the galaxy ZS 66A is very similar to the spectrum of the well-studied galaxy Mk 501, but the absolute value of luminosity is two orders of magnitude higher. According to published data, it has been shown that the most probable extragalactic sources of ultrahigh-energy gamma quanta may be the HBL-type blasar with a high frequency of maximum X-ray radiation.
He is author of more than 140 scientific articles.
Main publications:
1. Долгопериодические вариации γ -излучения в двойных ренгеновских системах/Нешпор Ю. И., Зыскин Ю. Л. // Изв. Крым. астрофиз. обсерв., 1988, 78, С. 122-125
2. Результаты наблюдений гамма-источников Cas-γ-1 в 1992-93 годах/Чаленко Н. Н., Владимирский Б. М., Зыскин Ю. Л., Калекин О. Р., Корниенко А. П., Нешпор Ю. И., Степанян А. А., Фомин В. П., Шитов В. Г.//Известия Крымской астрофизической обсерватории.- том 95, 1999.-C. 70-74
3. Observations of the gamma-ray flux from the X-ray source Cyg X-3 in 1994-1995 / Yu. I. Neshpor, O. R. kalekin, A. A. Stepanian, V. P. Fomin, N. N. Chalenko // Astronomy Letters.- 2003.- Vol. 29, No. 4.- P. 236 – 240
4. Результаты наблюдений потока гамма - квантов от рентгеновского источника Cyg X-3 в 1994-1995 гг. / Ю. И. Нешпор, О. Р. Калекин, А. А. Степанян, В. П. Фомин, Н. Н. Чаленко // Письма в Астрон. журн.- 2003.- Т. 29, № 4.- С. 277 – 281
Sources:
1 Реферативный журнал. 51 астрономия., М.: ВИНИТИ, 1988, №12, С.113
2 Астрономы России 1917-2017/ науч. ред. А.М.Черепащук, Казань, Казан. фед. ун-т, 2017.- 568с- C. 335
3 Видимо? Не видимо!.., Юрий Нешпор,
