Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Viktor Afanasiev"'
Autor:
Oleksandra Ivanova, Vera Rosenbush, Igor Luk’yanyk, Johannes Markkanen, Valery Kleshchonok, Ludmilla Kolokolova, Marek Husárik, Nikolai Kiselev, Maxim Andreev, Viktor Afanasiev
Publikováno v:
Astronomy & Astrophysics. 672:A76
Context. We analyze the results of our comprehensive observations of the high-perihelion comet C/2014 B1 (Schwartz) with stable disk-shaped coma and jets in order to study its nature. Aims. The main objective of our study is to obtain new observation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2379037945e379b0132dc2da50792f6d
https://doi.org/10.1051/0004-6361/202244686
https://doi.org/10.1051/0004-6361/202244686
Autor:
Elena Shablovinskaya, Viktor Afanasiev
Publikováno v:
Open Astronomy, Vol 28, Iss 1, Pp 213-219 (2019)
Due to the compactness active galactic nuclei (AGNs) are still unresolved with optical observations. However, structure and physical conditions of the matter in their central parts are especially important to study the processes of the matter accreti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::201774b338888be3c049a822528fa3f9
https://doi.org/10.1515/astro-2019-0020
https://doi.org/10.1515/astro-2019-0020
The spectra and images obtained through broadband BVR filters for Jupiter famaly comet P/2011 P1 were analyzed. We observed the comet on November 24, 2011, when its heliocentric distance was 5.43 AU. Two dimensional long slit spectra and photometric
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f88e795443624a147b0355edf8c2ea2c
http://arxiv.org/abs/2101.04190
http://arxiv.org/abs/2101.04190
Autor:
Ludmilla Kolokolova, Viktor Afanasiev, Valeriy Kleshchonok, O. Shubina, Vera Rosenbush, Nikolai Kiselev, Oleksandra Ivanova, Dmitry Petrov
We present results of imaging polarimetry of comet 2P/Encke performed on January 23, 2017 at the heliocentric (1.052 au) and geocentric (1.336 au) distances and phase angle 46.8 deg, 46 days before perihelion. Observations were made through the mediu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c150bd746ba382d6d917037e52d296b7
We present an analysis of the results of photometric investigations of two distant comets, C/2002 VQ94 (LINEAR) and 29P/Schwassmann-Wachmann 1, obtained with the 6m telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6c0b1e0b05fb8d0c2f34fb5cd129f88
http://arxiv.org/abs/2012.09008
http://arxiv.org/abs/2012.09008
Autor:
A. V. Ivanova, Viktor Afanasiev, M. V. Andreev, V. A. Ponomarenko, Pavlo Korsun, A. R. Baranskii
The results of the photometric observations of comet 29P/Schwassmann-Wachmann 1 are analyzed. The comet demonstrates substantial activity at heliocentric distances larger than 5 AU, outside the water ice sublimation zone. The CCD images of the comet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f504b8d7af0fe7ad97bf3dbafd81399
http://arxiv.org/abs/2012.09007
http://arxiv.org/abs/2012.09007
Autor:
Oleksandra Ivanova, Dusan Odstrcil, Vera Rosenbush, Pavlo Korsun, Oleksiy Agapitov, Viktor Afanasiev
Comet-centaur 29P/Schwassmann-Wachmann 1 was observed in CO+ emission and contin-uum during 2007-2009 using the 6-m Big Telescope Alt-azimuth at the Special Astrophysical Observatory of the Russian Academy of Sciences. We analysed the morphology of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cf34ef4db1f0b34ee87ed5ee10923541
http://arxiv.org/abs/2012.08497
http://arxiv.org/abs/2012.08497
Autor:
Olexnadra Ivanova, Igor Luk'yanyk, Valery Kreshenok, Nikolai Kiselev, Ludmilla Kolokolova, Vera Rosenbush, Zachary Renée Kirk, Viktor Afanasiev
Long-periodic comet C/2011 KP36 (Spacewatch), defined by Bauer et al. 2013 (Aph. J. 773:22) as a Scattered Disc Object, has a period of around 238 years and perihelion distance q=4.88 au. Its semi-major axis (a=38.41 au) is larger than aphelion dista
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09cbaf4dcbc2e1bafbf90eab81635c65
https://doi.org/10.5194/epsc2020-346
https://doi.org/10.5194/epsc2020-346
Here we give an observational method for measurements of the equatorial scattering region radius using variability in the polarized broad lines in Type 1 active galactic nuclei (AGNs). The polarization in broad lines of Type 1 AGNs is mostly caused b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5caa7c8346e0ee2c7cae81f50116515
http://arxiv.org/abs/2003.12809
http://arxiv.org/abs/2003.12809
Autor:
J. Svoreň, Pavlo Korsun, Oleksandra Ivanova, Viktor Afanasiev, Zuzana Seman Krišandová, V. Reshetnyk, Jürgen Blum, Yury V. Skorov, Igor Luk'yanyk, M. V. Andreev
Publikováno v:
Icarus. 313:1-14
We present an analysis of the photometric and spectroscopic data of the comet C/2012 S1 (ISON) observed at the heliocentric distances of 6.21\div 4.81 AU. The photometric observations were made with the 60-cm Zeiss-600 telescope (ICAMER, peak Terskol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d39533caadaaed27def0370a379caac4
https://doi.org/10.1016/j.icarus.2018.05.008
https://doi.org/10.1016/j.icarus.2018.05.008