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8 Result(s)

within A. V. Biryukov Remove this filter Astronomy, Astrophysics and Cosmology Remove this filter

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  1. No Access

    Article

    HD 4915 at the Beginning of Maunder Minimum of Activity

    Based on the available photometric data spanning almost 8000 days (21.9 years) of observations of a bright G5 V dwarf, solar-type star HD 4915, we carried out a study of the manifestations of its activity, pro...

    I. S. Savanov, E. S. Dmitrienko, S. V. Karpov, N. V. Lyapsina… in Astrophysical Bulletin (2023)

  2. No Access

    Article

    Activity of ET Dra—a Star of FK Com Type

    Abstract—We present new results of the study of ET Dra—a star of the FK Com type—based on observations carried out at the Zvenigorod Observatory of the Institute of Astronomy of RAS with the help of the FRAM-ORM ...

    I. S. Savanov, S. V. Karpov, G. M. Beskin, A. V. Biryukov… in Astrophysical Bulletin (2022)

  3. No Access

    Article

    Wide-field optical monitoring with Mini-MegaTORTORA (MMT-9) multichannel high temporal resolution telescope

    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 large as 900 deg2, perform...

    G. M. Beskin, S. V. Karpov, A. V. Biryukov, S. F. Bondar… in Astrophysical Bulletin (2017)

  4. No Access

    Article

    Test results of radio interferometer with zero base in the RadioAstron project

    In preparation for the launch of a space telescope for ground tests within the ground-space RadioAstron project, procedures and methods are developed in order to carry out tests under the zero base interferome...

    A. V. Biryukov in Cosmic Research (2015)

  5. No Access

    Article

    Radioastron (Spectr-R Project)—a radio telescope much larger than the earth: main parameters and prelaunch tests

    The Russian Academy of Sciences and the Russian Federal Space Agency are planning to launch Radioastron in 2011, which is a unique space observatory with a 10-meter reflector antenna. In conjunction with the larg...

    Yu. A. Alexandrov, V. V. Andreyanov, N. G. Babakin… in Solar System Research (2012)

  6. No Access

    Article

    Radioastron (Spectr-R project)—a radio telescope much larger than the earth: Ground segment and key science areas

    The space interferometer Radioastron is working jointly with the largest radio telescopes of the world. Ground tracking stations provide for retrieving the information and determining the orbital parameters for d...

    Yu. A. Alexandrov, V. V. Andreyanov, N. G. Babakin… in Solar System Research (2012)

  7. No Access

    Article

    Search for possible connections between isolated radio pulsars and supernova remnants

    We have developed a method of searching for the connections between the isolated radio pulsars and supernova remnants, based on the analysis of their kinematic characteristics. We investigate fairly young (τ ...

    E. G. Chmyreva, G. M. Beskin, A. V. Biryukov in Astrophysical Bulletin (2012)

  8. No Access

    Article

    Non-monotonous character of single radio pulsar spin-down

    Our paper is dedicated to the problem of anomalous values of braking indices n obs and spin frequency second derivatives \(\ddot \nu\) of isolated radio...

    A. V. Biryukov, G. M. Beskin, S. V. Karpov in Astrophysical Bulletin (2011)