Zobrazeno 1 - 10
of 15
pro vyhledávání: '"VLADIMIR V. KOUPRIANOV"'
Autor:
Mauri J. Valtonen, Staszek Zola, Alok C. Gupta, Shubham Kishore, Achamveedu Gopakumar, Svetlana G. Jorstad, Paul J. Wiita, Minfeng Gu, Kari Nilsson, Alan P. Marscher, Zhongli Zhang, Rene Hudec, Katsura Matsumoto, Marek Drozdz, Waldemar Ogloza, Andrei V. Berdyugin, Daniel E. Reichart, Markus Mugrauer, Lankeswar Dey, Tapio Pursimo, Harry J. Lehto, Stefano Ciprini, T. Nakaoka, M. Uemura, Ryo Imazawa, Michal Zejmo, Vladimir V. Kouprianov, James W. Davidson Jr., Alberto Sadun, Jan Štrobl, Z. R. Weaver, Martin Jelínek
Publikováno v:
The Astrophysical Journal Letters, Vol 968, Iss 2, p L17 (2024)
We report the study of a huge optical intraday flare on 2021 November 12 at 2 a.m. UT in the blazar OJ 287. In the binary black hole model, it is associated with an impact of the secondary black hole on the accretion disk of the primary. Our multifre
Externí odkaz:
https://doaj.org/article/e6e575b905e5482a8bee0479a0634bbd
Autor:
Graham M. Doskoch, Andrea Basuroski, Kriisa Halley, Avinash Sookram, Iliomar Rodriguez-Ramos, Valmik Nahata, Zahi Rahman, Maureen Zhang, Ashish Uhlmann, Abby Lynch, Natalia Lewandowska, Nohely Miranda, Ann Schmiedekamp, Carl Schmiedekamp, Maura A. McLaughlin, Daniel E. Reichart, Joshua B. Haislip, Vladimir V. Kouprianov, Steve White, Frank Ghigo, Sue Ann Heatherly
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 2, p 87 (2024)
A small number of pulsars are known to emit giant pulses (GPs), single pulses much brighter than average. Among these is PSR J0534+2200, also known as the Crab pulsar, a young pulsar with high GP rates. Long-term monitoring of the Crab pulsar present
Externí odkaz:
https://doaj.org/article/ac9b1da381a24925bf3c5c0da3fa9197
Autor:
Koshvendra Singh, Joe P. Ninan, Marina M. Romanova, David A. H. Buckley, Devendra K. Ojha, Arpan Ghosh, Andrew Monson, Malte Schramm, Saurabh Sharma, Daniel E. Reichart, Joanna Mikolajewska, Juan Carlos Beamin, Jura Borissova, Valentin D. Ivanov, Vladimir V. Kouprianov, Franz-Josef Hambsch, Andrew Pearce
Publikováno v:
The Astrophysical Journal, Vol 968, Iss 2, p 88 (2024)
EX Lupi, a low-mass young stellar object, went into an accretion-driven outburst in 2022 March. The outburst caused a sudden phase change of ∼112° ± 5° in periodically oscillating multiband lightcurves. Our high-resolution spectra obtained with
Externí odkaz:
https://doaj.org/article/2306adfb663847a2939b5386a67c20c2
Autor:
Mauri J. Valtonen, Lankeswar Dey, Achamveedu Gopakumar, Staszek Zola, Anne Lähteenmäki, Merja Tornikoski, Alok C. Gupta, Tapio Pursimo, Emil Knudstrup, Jose L. Gomez, Rene Hudec, Martin Jelínek, Jan Štrobl, Andrei V. Berdyugin, Stefano Ciprini, Daniel E. Reichart, Vladimir V. Kouprianov, Katsura Matsumoto, Marek Drozdz, Markus Mugrauer, Alberto Sadun, Michal Zejmo, Aimo Sillanpää, Harry J. Lehto, Kari Nilsson, Ryo Imazawa, Makoto Uemura
Publikováno v:
Galaxies, Vol 11, Iss 4, p 82 (2023)
We present a summary of the results of the OJ 287 observational campaign, which was carried out during the 2021/2022 observational season. This season is special in the binary model because the major axis of the precessing binary happens to lie almos
Externí odkaz:
https://doaj.org/article/f417436aeaf440128c5aa7366d0a29a7
Autor:
Agnieszka Kuźmicz, Arti Goyal, Stanisław Zola, Marek Jamrozy, Marek Dróżdż, Waldemar Ogłoza, Michał Siwak, Daniel E. Reichart, Vladimir V. Kouprianov, Daniel B. Caton
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 264, Iss 1, p 27 (2023)
Externí odkaz:
https://doaj.org/article/709fb7c4acff4b6db6b1ebba95637455
Autor:
IGOR E. MOLOTOV, YURIJ N. KRUGLY, LEONID V. ELENIN, THOMAS SCHILDKNECHT, VASILIJ V. RUMYANTSEV, RAGULI YA. INASARIDZE, VOVA R. AIVAZYAN, GIVI V. KAPANADZE, LLUIS R. CANALS, FILIPPO GRAZIANI, PAOLO TEOFILATTO, SHUHRAT A. EHGAMBERDIEV, OTABEK A. BURKHONOV, EKATERINA D. CHORNAYA, ANTON V. KOCHERGIN, YEHIA A. ABDEL-AZIZ, AHMED M. ABDELAZIZ, VLADIMIR V. KOUPRIANOV, MIKHAIL V. ZAKHVATKIN, VICTOR A. STEPANYANTS, INNA V. REVA, ALEXANDER V. SEREBRYANSKIY, SERGEI E. SCHMALZ, IGOR V. NIKOLENKO
Publikováno v:
Anais da Academia Brasileira de Ciências, Vol 93, Iss suppl 1 (2021)
Abstract International Scientific Optical Network (ISON) is an open international voluntary project specializing in observations of the near-Earth space objects. Observatories collaborating with ISON provide the global coverage and successfully combi
Externí odkaz:
https://doaj.org/article/1c56e00b6d294d7cb5c66bf512eaad3d
Autor:
Mauri J Valtonen, Staszek Zola, A Gopakumar, Anne Lähteenmäki, Merja Tornikoski, Lankeswar Dey, Alok C Gupta, Tapio Pursimo, Emil Knudstrup, Jose L Gomez, Rene Hudec, Martin Jelínek, Jan Štrobl, Andrei V Berdyugin, Stefano Ciprini, Daniel E Reichart, Vladimir V Kouprianov, Katsura Matsumoto, Marek Drozdz, Markus Mugrauer, Alberto Sadun, Michal Zejmo, Aimo Sillanpää, Harry J Lehto, Kari Nilsson, Ryo Imazawa, Makoto Uemura
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 521:6143-6155
Publisher Copyright: © 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society. The bright blazar OJ 287 routinely parades high brightness bremsstrahlung flares, which are explained as being a result of a seco
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4259cb5c824a11478c5c4b99ce584b07
https://doi.org/10.1093/mnras/stad922
https://doi.org/10.1093/mnras/stad922
Autor:
Uemura, Mauri J. Valtonen, Lankeswar Dey, Achamveedu Gopakumar, Staszek Zola, Anne Lähteenmäki, Merja Tornikoski, Alok C. Gupta, Tapio Pursimo, Emil Knudstrup, Jose L. Gomez, Rene Hudec, Martin Jelínek, Jan Štrobl, Andrei V. Berdyugin, Stefano Ciprini, Daniel E. Reichart, Vladimir V. Kouprianov, Katsura Matsumoto, Marek Drozdz, Markus Mugrauer, Alberto Sadun, Michal Zejmo, Aimo Sillanpää, Harry J. Lehto, Kari Nilsson, Ryo Imazawa, Makoto
Publikováno v:
Galaxies; Volume 11; Issue 4; Pages: 82
We present a summary of the results of the OJ 287 observational campaign, which was carried out during the 2021/2022 observational season. This season is special in the binary model because the major axis of the precessing binary happens to lie almos
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=multidiscipl::baa32c3174a05bafd880b34ab08f598c
Autor:
Takashi Horiuchi, Hidekazu Hanayama, Masatoshi Ohishi, Tatsuya Nakaoka, Ryo Imazawa, Koji S Kawabata, Jun Takahashi, Hiroki Onozato, Tomoki Saito, Masayuki Yamanaka, Daisaku Nogami, Yusuke Tampo, Naoto Kojiguchi, Jumpei Ito, Masaaki Shibata, Malte Schramm, Yumiko Oasa, Takahiro Kanai, Kohei Oide, Katsuhiro L Murata, Ryohei Hosokawa, Yutaka Takamatsu, Yuri Imai, Naohiro Ito, Masafumi Niwano, Seiko Takagi, Tatsuharu Ono, Vladimir V Kouprianov
Publikováno v:
Publications of the Astronomical Society of Japan.
This study provides the results of simultaneous multicolor observations for the first Visorsat (STARLINK-1436) and the ordinary Starlink satellite, STARLINK-1113 in the $U$, $B$, $V$, $g'$, $r$, $i$, $R_{\rm C}$, $I_{\rm C}$, $z$, $J$, $H$, and $K_s$
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::479700fd26fd38c1a48c4cb9cd358302
https://doi.org/10.1093/pasj/psad021
https://doi.org/10.1093/pasj/psad021
Autor:
Robert V. Caddy, Andrew C. Layden, Daniel E. Reichart, Joshua B. Haislip, Vladimir V. Kouprianov, Kevin M. Ivarsen, Justin P. Moore, Aaron P. LaCluyze, Tyler R. Linder, Melissa C. Nysewander
We present time-series CCD photometry in the $BVRI$ passbands of the recently identified symbiotic nova V1835 Aquilae (NSV 11749) over an interval of 5.1 years with 7-14 day cadence, observed during its quiescence. We find slow light variations with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fab2d8467549c72660791937344b0904
http://arxiv.org/abs/2209.11251
http://arxiv.org/abs/2209.11251
