Grinin Vladimir Petrovich General data:
Born: 1943
Place of birth: Stroilovo village, Leningrad region, Russian SSR
Studied in: A. A. Zhdanov Leningrad Order of Lenin State University (since 1991 St. Petersburg State University) (1966);
Key interests: physics of variable stars, physics of comets, variable stars, stellar evolution. PhD Thesis: Radiation transfer in the shells of nonstationary stars (1972 ); ScD Thesis: Radiation transfer and light pressure in moving media (1986 );
Biography:
He was born in 1943 in the Stroilovo village of Leningrad Region of Russian SSR.
In 1966 he graduated from the A. A. Zhdanov Leningrad Order of Lenin State University with a degree in astronomy and was hired by the Crimean Astrophysical Observatory of the USSR Academy of Sciences.
In the same year he entered the graduate school of the A. A. Zhdanov Leningrad Order of Lenin State University.
In 1972 he defended his dissertation "Transfer of radiation in the shells of nonstationary stars". Professor V. V. Sobolev was his scientific supervisor.
In 1986 he defended his dissertation for the degree of Doctor of Physical and Mathematical Sciences "Radiation transfer and light pressure in moving media".
Since 2000 he has been an employee of the Pulkovo Observatory, head of the star formation laboratory. In 2010 he received the title of professor. He was the deputy editor-in-chief of the journal Astrophysics.
He is the author of a number of works, in particular in the 80's of the twentieth century together with Mickiewicz A. S. performed calculations of emission lines of ionized calcium for the case of moving orbital envelopes.
In the 80's of the twentieth century together with Boyarchuk A. A., Burnashov V. I., Zvereva A. M. and Sheikhet A. I. analyzed the data of Halley's comet observations obtained from aboard the artificial satellite of the Earth "Astron": they developed models of comet gas coma, found rate of sublimation of water molecules and investigated its dependence on the heliocentric distance of the comet, found asymmetry in the behavior of this parameter in parts of the orbit before and after perihelion.
For the first time, he solved the problem of the propagation of thermal perturbations in temperature-stratified media, taking into account the perturbations of their optical properties. It is shown that pulsed heating of the outer layers of cold star atmospheres leads to a short-term decrease in their brightness caused by a sharp increase in gas opacity. Similar effects are observed in flashes of UV stars such as China, as well as timely solar flares. For the first time in 1977 he, together with V. V. Sobolev, concluded that the source of optical radiation of flashes of UV stars of China is a dense gas with a temperature of about 104 K, located between the chromosphere and the photosphere. Its heating is associated with the generation of beams of high-energy charged particles. This view is now generally accepted.
In 1975, together with S. I. Grachev, he showed that in shells with a large negative velocity gradient (accretion, expansion with deceleration), there is nonlocal radiation interaction at the frequencies of spectral lines. A generalization of the Sobolev equation for the source function is obtained. In a series of works published in 1978-1980, he found that in media with axially symmetric motions there is a tangential component of light pressure, the direction of which may or may not coincide with the direction of rotation of the medium. He proposed a model for the formation of blue radiation, which is observed in the deep minima of young stars such as UX Op (1986). This radiation was the scattered light of protoplanetary disks. This work has had a significant impact on the development of ideas about the nature of variability of stars of this type.
He is also an employee of the V. V. Sobolev Astronomical Institute in St. Petersburg.
His main research interests are related to the theory of radiation transfer, non-stationary processes on stars and the stellar environment, and the physics of young stars.
V.P. Grinin and his colleagues discovered the correlation between the brightness and polarization of the radiation of young stars, this laid the foundation for the study of protoplanetary disks.
P.P. Petrov and V.P. Grinin discovered the asymmetry of the stellar wind of T Tauri type stars due to the magnetic field.
He is the author of more than 150 scientific articles. Under his supervision 9 candidate dissertations were defended.
Main publications:
1. Polarization of light by young stelar objects/Grinin V. P.// Abstracts NATO ASI on Photopolarimetry in Remote Sensing and Workshop on Remote Sensing Techniques and Instrumentation: International Cooperation, Yalta, Ukraine, 20 September to 4 October 2003 .-USA: ArmyReseach Laboratory , 2003,-P.3
2. Dynamical processes in the neighborhood of the Herbig Ae star MWC 480 based on spectral monitoring data / O. V. Kozlova, V. P. Grinin, G. A. Chuntov // Astrophysics.- 2003.- Vol. 46, No. 3.- P. 265 – 285
3. Диагностика секреционного диска звезды UX Ori по водородным линиям бальмеровской, пашеновской и брэккетовской серий / Л. В. Тамбовцева, В. П. Гринин, Б. Роджерс, О. В. Козлова // Астрон. журн.- 2001.- Т. 78, № 6.- С. 514 - 524.
4. Результаты фотометрических и поляриметрических наблюдений Фуора V1057 Cyg от момента вспышки до наших дней./Копацкая Е. Н., Гринин В. П., Шаховской Д. Н., Шулов О. С.//Астрофизика, 2002, Т. 45, в. 2, . -С. 175-182
Sources:
1 Pavlenko Ya. V., Vavilova I. B., Kostiuk Т. Astronomy in Ukraine. Organizations and strategies in astronomy. — Springer-Verlag, 2005.—Vol. 6.—P. 22
2 Реферативный журнал. 51 астрономия., М.: ВИНИТИ, 1988, №12, С.42, 103
3 Астрономы России 1917-2017/ науч. ред. А.М.Черепащук, Казань, Казан. фед. ун-т, 2017.- 568с- C.128
4 Крымская астрофизическая обсерватория.Открытия, сделанные в обсерватории
