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1.
A. A. Boyarchuk B. M. Shustov I. S. Savanov M. E. Sachkov D. V. Bisikalo L. I. Mashonkina D. Z. Wiebe V. I. Shematovich Yu. A. Shchekinov T. A. Ryabchikova N. N. Chugai P. B. Ivanov N. V. Voshchinnikov A. I. Gomez de Castro S. A. Lamzin N. Piskunov T. Ayres K. G. Strassmeier S. Jeffrey S. K. Zwintz D. Shulyak J.-C. Gérard B. Hubert L. Fossati H. Lammer K. Werner A. G. Zhilkin P. V. Kaigorodov S. G. Sichevskii S. Ustamuich E. N. Kanev E. Yu. Kil’pio 《Astronomy Reports》2016,60(1):1-42
The article presents a review of scientific problems and methods of ultraviolet astronomy, focusing on perspective scientific problems (directions) whose solution requires UV space observatories. These include reionization and the history of star formation in the Universe, searches for dark baryonic matter, physical and chemical processes in the interstellar medium and protoplanetary disks, the physics of accretion and outflows in astrophysical objects, from Active Galactic Nuclei to close binary stars, stellar activity (for both low-mass and high-mass stars), and processes occurring in the atmospheres of both planets in the solar system and exoplanets. Technological progress in UV astronomy achieved in recent years is also considered. The well advanced, international, Russian-led Spektr-UV (World Space Observatory—Ultraviolet) project is described in more detail. This project is directed at creating a major space observatory operational in the ultraviolet (115–310 nm). This observatory will provide an effective, and possibly the only, powerful means of observing in this spectral range over the next ten years, and will be an powerful tool for resolving many topical scientific problems. 相似文献
2.
Solar System Research - In this paper we describe scientific problems of stellar astrophysics that require observational data in the ultraviolet domain of the electromagnetic spectrum. These... 相似文献
3.
M. E. Sachkov 《Astrophysical Bulletin》2014,69(1):40-45
Rapidly oscillating chemically peculiar A stars (roAp) pulsate in high-overtone, low degree p-modes and form a sub-group of chemically peculiar magnetic A stars (Ap). Until recently, the classical asteroseismic research, i.e., frequency analysis, of these stars was based on photometric observations both ground-based and space-based. Significant progress has been achieved by obtaining uninterrupted, ultra-high precision data from the MOST, COROT, and Kepler satellites. Over the last ten years, a real breakthrough was achieved in the study of roAp stars due to the time-resolved, high spectral resolution spectroscopic observations. Unusual pulsational characteristics of these stars, caused by the interaction between propagating pulsationwaves and strong stratification of chemical elements, provide an opportunity to study the upper roAp star atmosphere in more detail than is possible for any star but the Sun, using spectroscopic data. In this paper the results of recent pulsation studies of these stars are reviewed. 相似文献
4.
M. E. Sachkov 《Astronomy Letters》2002,28(9):589-593
Based on our radial-velocity measurements and on published photometric observations, we calculated the radii of 64 classical Cepheids that were previously assumed to be fundamental-mode pulsators. Our detailed analysis of the period-radius diagram shows that the sample of Cepheids with pulsation periods shorter than 9 days probably contains a significant fraction (up to 30%) of stars pulsating in the first overtone. This fact leads to incorrect luminosity estimates for Cepheids and may be partly responsible for the discrepancy between the short and long distance scales. 相似文献
5.
I. P. Bashilov A. A. Vereshchagin S. G. Volosov V. A. Merkulov Yu. V. Ryazantsev V. I. Sachkov S. Yu. Chervinchuk 《Journal of Volcanology and Seismology》2018,12(2):150-154
This paper reports the development of a new-generation short-period borehole electrodynamic seismometer designed for research, with special emphasis on seismology and volcanology (Sobisevich et al., 2008) and for important applications (Bashilov, 2001), e.g., developing special monitoring and security systems, as well as the search for and monitoring of hydrocarbon exploration. 相似文献
6.
Boris Shustov Mikhail Sachkov Ana I. Gómez de Castro Maohai Huang Klaus Werner Norbert Kappelmann Isabella Pagano 《Astrophysics and Space Science》2009,320(1-3):187-190
The World Space Observatory UltraViolet (WSO–UV) is an international space mission devoted to UV spectroscopy and imaging. The observatory includes a 170 cm aperture telescope capable of high-resolution and long slit low-resolution spectroscopy, and deep UV and optical imaging. The observatory is designed for observations in the ultraviolet domain where most of astrophysical processes can be efficiently studied with unprecedented capability. 相似文献
7.
We discuss the milestones of development of the integral methods used in the optical spectroscopy of astronomical objects.
We analyze the reasons why some of these methods did not get wide practical application. We demonstrate that a combination
of integral methods with multichannel detectors allow increasing the efficiency of the existing astronomical telescopes while
pursuing the given spectroscopic programs. A technique of radial velocity measurements not susceptible to positional errors,
typical of diffraction spectroscopy, is as well discussed. 相似文献
8.
Solar System Research - In this paper, we review the current state and prospects of comet and meteor studies. Special attention is paid to scientific tasks that should be solved with a help of... 相似文献
9.
M. E. Sachkov 《Solar System Research》2014,48(7):480-484
10.
Alexander Boyarchuk Igor Savanov Evgeny Kanev Boris Shustov Mikhail Sachkov 《Astrophysics and Space Science》2014,354(1):247-250
2013 marks the 30th anniversary since the launch of Soviet Spacecraft Astron that had been operated for 6 years as the largest ultraviolet telescope during its lifetime. The Astron orbital station was designed for the astrophysical observations. It was launched into orbit by Proton launch system on March 23, 1983. Astron had a 80 cm ultraviolet telescope with mass of 400 kg and a complex of X-ray spectrographs with mass of 300 kg on board as a payload. It’s high apogee orbit (with apogee 200000 km and perigee 2000 km) permitted the influences of the Earth’s umbra and radiation belts to be excluded from the measurements. The main astrophysical results are summarized in this paper. 相似文献