Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Alexander F. Kholtygin"'
Testing the fossil field hypothesis: could strongly magnetized OB stars produce all known magnetars?
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Stars of spectral types O and B produce neutron stars (NSs) after supernova explosions. Most of NSs are strongly magnetised including normal radio pulsars with $B \propto 10^{12}$ G and magnetars with $B\propto 10^{14}$ G. A fraction of 7-12 per cent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::135e980d45ed01cc3f8775fa7564cd77
https://doi.org/10.1093/mnras/stab1175
https://doi.org/10.1093/mnras/stab1175
Autor:
Ya. A. Doronina, I. M. Tumanova, O. A. Merkulova, O. A. Tsiopa, Alexander F. Kholtygin, E. B. Ryspaeva
Publikováno v:
Astrophysics. 64:54-60
Studies of the magnetic fields of Herbig Ae/Be (HAeBe) stars can aid in understanding how the magnetic fields of AB stars of intermediate mass are created and evolve. It has been shown that the magnetic fields and magnetic fluxes of HAeBe stars befor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86c3aac0e7a6a7f5d97ce7338386510f
https://doi.org/10.1007/s10511-021-09667-2
https://doi.org/10.1007/s10511-021-09667-2
Publikováno v:
Astrophysics. 63:356-366
The results of observations at high temporal resolution (∆T~4 min) of the B0.5V star e Per A on the 2-m telescope of the Terskol Observatory are reported. Regular components of variations in line profiles with periods 1.5-18 hours are recorded. Evi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27fa92637625519206eba2e11df5de81
https://doi.org/10.1007/s10511-020-09640-5
https://doi.org/10.1007/s10511-020-09640-5
Autor:
A. A. Batrakov, Alexander F. Kholtygin, S. N. Fabrika, A. F. Valeev, A. Kostenkov, O. A. Tsiopa
Publikováno v:
Astrophysical Bulletin. 75:278-283
—This study continues the investigation of the super-fast variability of line profiles in the spectra of stars of early spectral classes performed in 2017 and 2018. We investigated the variability of line profiles in the spectra of OBA stars with t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0405669e4ca2b8a7737b6eae9abf3c3c
https://doi.org/10.1134/s1990341320030074
https://doi.org/10.1134/s1990341320030074
Autor:
E. B. Ryspaeva, Alexander F. Kholtygin
Publikováno v:
Astrophysical Bulletin. 75:127-138
—In the paper the possibility of the presence of a non-thermal component described by a power law spectrum in the X-ray spectra of OB stars is investigated. The low-resolution spectra of 101 OB stars obtained using the EPIC camera on the XMM satell
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::102d69c19a7554d9820c0f2db709f584
https://doi.org/10.1134/s199034132002011x
https://doi.org/10.1134/s199034132002011x
Publikováno v:
Astrophysical Bulletin. 74:293-299
Magnetic-field measurements for Herbig Ae/Be stars are analyzed to determine the distribution functions of root-mean-squared magnetic field strengths $$\mathcal{B}$$ (in G) and magnetic fluxes Φ (in G cm2) for Herbig stars with measured magnetic fie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10447e6d5bafd723bed8ba0e1368f0f7
https://doi.org/10.1134/s1990341319030064
https://doi.org/10.1134/s1990341319030064
Autor:
E. Jilinski, Natalia A. Drake, Alexander F. Kholtygin, J. Telting, Yu. K. Ananjevskaja, M. A. Pogodin, A. Herrera, C. B. Pereira, G. A. Galazutdinov
Publikováno v:
Astrophysics. 62:183-201
High-resolution spectroscopic data for the binary system HD83058 located in the OB association Sco-Cen are presented. The observations were made at the ESO and Sierra Armazones (Chile) observatories over 3 seasons: in March 1998, in 2007-2009, and in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::edde4b913c9451aafd6bcff2465b24f7
https://doi.org/10.1007/s10511-019-09573-8
https://doi.org/10.1007/s10511-019-09573-8
This work is a continuation of the studies of the ultrafast variability of line profiles in the spectra of early-type stars. Line profile variations (LPVs) in the spectrum a chemically peculiar A0Vp star $\alpha^2\,$CVn are investigated using the Jan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6480863845a46d44e5184bb25810d640
http://arxiv.org/abs/2011.01312
http://arxiv.org/abs/2011.01312
Autor:
A. V. Dodin, A. Kostenkov, M. A. Burlak, O. A. Tsiopa, N. P. Ikonnikova, A. V. Moiseeva, A. A. Batrakov, Alexander F. Kholtygin, A. F. Valeev, M. S. Kurdoyakova, I. A. Yakunin, S. N. Fabrika
Publikováno v:
GROUND-BASED ASTRONOMY IN RUSSIA. 21ST CENTURY. Proceedings of the All-Russian Conference.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a96ab121752f753ef8e4ddc30b83d97
https://doi.org/10.26119/978-5-6045062-0-2_2020_238
https://doi.org/10.26119/978-5-6045062-0-2_2020_238
Autor:
I. M. Tumanova, Alexander F. Kholtygin, M. Obolentseva, E. Ryspaeva, O. A. Tsiopa, S. S. Bhogaokar
Publikováno v:
GROUND-BASED ASTRONOMY IN RUSSIA. 21ST CENTURY. Proceedings of the All-Russian Conference.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e8fff96692fea2fc8052f5167975213
https://doi.org/10.26119/978-5-6045062-0-2_2020_315
https://doi.org/10.26119/978-5-6045062-0-2_2020_315