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Просмотр по автору "Karpov S."

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Detection of regular low-amplitude photometric variability of the magnetic dwarf WD0009+501. On the possibility of photometric investigation of exoplanets on the basis of 1-meter class telescopes of the special and crimean astrophysical observatories

Valeev A.; Antonyuk K.; Pit N.; Solovyev V.; Burlakova T.; Moskvitin A.; Grauzhanina A.; Gadelshin D.; Shulyak D.; Fatkhullin T.; Galazutdinov G.; Malogolovets E.; Beskin G.; Karpov S.; Dyachenko V.; Rastegaev D.; Rzaev A.; Valyavin G. (2015)

© 2015, Pleiades Publishing, Ltd. We present the results of photometric observations of the weak magnetic white dwarf WD0009+501. The observations were carried out for two years with the 1-m telescopes of the Special and ...
Discovery of the Sub-second Linearly Polarized Spikes of Synchrotron Origin in the UV Ceti Giant Optical Flare

Beskin G.; Karpov S.; Plokhotnichenko V.; Stepanov A.; Tsap Y. (2017)

Copyright © Astronomical Society of Australia 2017During our optical monitoring of UV Ceti, iconic late-type flaring star, with high temporal resolution using the Russian 6-m telescope in 2008, we detected a giant flare ...
Evaluation of scientific CMOS sensors for sky survey applications

Karpov S.; Bajat A.; Christov A.; Prouza M.; Beskin G. (2020)

© SPIE. Downloading of the abstract is permitted for personal use only. Scientific CMOS image sensors are a modern alternative for a typical CCD detectors, as they offer both low read-out noise, large sensitive area, and ...
High time resolution multi-band photo-polarimetric observations of the binary millisecond redback pulsar J1023+0038 with the BTA

Shibanov Y.; Beskin G.; Karpov S.; Plokhotnichenko V.; Zyuzin D.; Kholtygin A.; Sokolov V.; Baryshev Y. (2017)

© Published under licence by IOP Publishing Ltd. We briefly report first results of high time resolution optical multi-band panoramic photo-polarimetric observations of the eclipsing binary millisecond redback pulsar ...
Looking for fast optical bursts from FRB121102: Case study for a small telescopes with sub-second temporal resolution

Karpov S.; Jelinek M.; Štrobl J. (2019)

© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim To assess the potential of small telescopes for high temporal resolution astrophysics, we observed the field of FRB 121102 repeating source of fast radio bursts (FRBs) ...
Mini-megatortora status update

Beskin G.; Karpov S.; Bondar S.; Perkov A.; Ivanov E.; Katkova E.; Sasyuk V.; Biryukov A.; Shearer A. (2014)

Here we give a status report on the next generation, multi-objective and transforming monitoring system, MiniMegaTORTORA, with two variants (MMT-6 based on image intensifiers with fast CCDs and MMT-9 equipped with Andor ...
Mini-MegaTORTORA-multichannel system for wide-field optical monitoring with high temporal resolution

Sasyuk V.; Beskin G.; Karpov S.; Bondar S.; Perkov A.; Ivanov E.; Katkova E.; Shearer A. (2014)

We report on a multi-objective and transforming 9-channel monitoring system, the Mini-MegaTORTORA (MMT-9). This system combines a wide field of view with a subsecond temporal resolution in the monitoring regime, and is ...
Modern astronomical surveys for parameterization of stars and interstellar medium

Malkov O.; Karpov S.; Kovaleva D.; Murthy J.; Sichevsky S.; Skvortsov N.; Stupnikov S.; Zhao G.; Zhukov A. (2020)

© Springer Nature Switzerland AG 2020. Developing methods for analyzing and extracting information from modern sky surveys is a challenging task in astrophysical studies and is important for many investigations of galactic ...
Observations of transient events with Mini-MegaTORTORA wide-field monitoring system with sub-second temporal resolution

Karpov S.; Beskin G.; Biryukov A.; Bondar S.; Ivanov E.; Katkova E.; Orekhova N.; Perkov A.; Sasyuk V. (2017)

Here we present the summary of first years of operation and the first results of a novel 9-channel wide-field optical monitoring system with sub-second temporal resolution, Mini-MegaTORTORA (MMT-9), which is in operation ...
On the atmospheric extinction reduction procedure in multiband wide-field photometric surveys

Zakharov A.; Mironov A.; Biryukov A.; Kroussanova N.; Prokhorov M.; Beskin G.; Karpov S.; Bondar S.; Ivanov E.; Perkov A.; Sasyuk V. (2015)

We propose an improved method for the atmospheric extinction reduction within optical photometry. Our method is based on the simultaneous multicolor observations of photometric standards. Such data are now available within ...
On the nature of high reddening of Cygnus OB2 #12 hypergiant

Maryeva O.; Chentsov E.; Goranskij V.; Dyachenko V.; Karpov S.; Malogolovets E.; Rastegaev D. (2016)

© 2016 The Authors.To explain the nature of the high reddening (AV ≃ 10 mag) towards one of the most luminous stars in the Galaxy - Cyg OB2 #12 (B5 Ia-0), also known as MT304, we carried out spectrophotometric observations ...
Photometric observations of LO peg in 2014-2015

Savanov I.; Puzin V.; Dmitrienko E.; Karpov S.; Beskin G.; Biryukov A.; Bondar S.; Ivanov E.; Katkova E.; Orekhova N.; Perkov A.; Sasyuk V.; Romanyuk I.; Semenko E.; Kudryavtsev D.; Karmakar S.; Pandey J.; Pandey S.; Joshi S.; Misra K. (2016)

We performed new observations of an ultra-fast rotator of the spectral class K - the LO Peg star - in SAO RAS in 2014 and in Zvenigorod Observatory of INASAN in 2015. The light curves were used to build the maps of temperature ...
Searching for isolated stellar-mass black hole candidates by analyzing the kinematics of their former companions in disrupted binary systems

Chmyreva L.; Beskin G.; Karpov S. (2017)

We performed a search for isolated stellar-mass black hole candidates based on the fact that more than 50% of radio pulsars have originated in binary systems, now disrupted, where the other component could have evolved ...
Statistical analysis of the parameters of gamma-ray bursts with known redshifts and peaked optical light curves

Beskin G.; Oganesyan G.; Greco G.; Karpov S. (2015)

© 2015, Pleiades Publishing, Ltd. We present the statistical analysis of the properties of gamma-ray bursts with measured host galaxy redshifts and peaked optical light curves in proper frames of reference. The optical ...
Statistical properties of GRB afterglow parameters as evidence of cosmological evolution of their host galaxies

Beskin G.; Oganesyan G.; Greco G.; Karpov S. (2014)

The results of a study of 43 peaked R-band light curves of optical counterparts of gamma-ray bursts with known redshifts are presented. The parameters of optical transients were calculated in the comoving frame, and then ...
Status and perspectives of Mini-MegaTORTORA wide-field monitoring system with high temporal resolution

Karpov S.; Beskin G.; Bondar S.; Perkov A.; Ivanov E.; Guarnieri A.; Bartolini C.; Greco G.; Shearer A.; Sasyuk V. (2013)

Here we briefly summarize our long period experience of constructing and operating wide-field monitoring cameras with sub-second temporal resolution to look for optical components of GRBs, fast-moving satellites and meteors. ...
Status and perspectives of the Mini-MegaTORTORA wide-field monitoring system with high temporal resolution

Karpov S.; Beskin G.; Bondar S.; Perkov A.; Ivanov E.; Guarnieri A.; Bartolini C.; Greco G.; Shearer A.; Sasyuk V. (2013)

Here we briefly summarize our long-term experience of constructing and operating wide-field monitoring cameras with sub-second temporal resolution to look for optical components of GRBs, fast-moving satellites and meteors. ...
The apparent decay of pulsar magnetic fields

Biryukov A.; Astashenok A.; Karpov S.; Beskin G. (2017)

© Published under licence by IOP Publishing Ltd. Neutron stars are extremely strong cosmic magnets which fields are expected to decay with time. Here we report on the simple test of this process. Adopting a novel approach, ...
The study of coherent optical pulsations of the millisecond pulsar PSR J1023+0038 on Russian 6-m telescope

Karpov S.; Beskin G.; Plokhotnichenko V.; Shibanov Y.; Zyuzin D. (2019)

© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim We observed the millisecond redback pulsar PSR J1023+0038 in its accreting regime on two nights in November 2017 on Russian 6-m telescope with a high-temporal resolution ...
Wide-field optical monitoring with Mini-MegaTORTORA (MMT-9) multichannel high temporal resolution telescope

Beskin G.; Karpov S.; Biryukov A.; Bondar S.; Ivanov E.; Katkova E.; Orekhova N.; Perkov A.; Sasyuk V. (2017)

© 2017, Pleiades Publishing, Ltd.We describe the properties of Mini-MegaTORTORA (MMT-9) nine-channel wide-field optical sky monitoring system with subsecond temporal resolution. This instrument can observe sky areas as ...

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