MODELLING THE SPECTRAL ENERGY DISTRIBUTIONS OF THE ACCRETION DISKS OF YOUNG STARS WITH FOSSIL MAGNETIC FIELD
Section: STARS AND THE INTERSTELLAR MEDIUM
Authors:
1.
Ural Federal University
2.
Ural Federal University
Saint-Petersburg University
Chelyabinsk State University
Saint-Petersburg University
Chelyabinsk State University
Type:
Сonference article
Pages:
from 300
to 303
Published:
27.12.2024
Subject area:
UDC 52
UDC 53
UDC 520
UDC 521
UDC 523
UDC 524
UDC 52-1
UDC 52-6
CSCSTI 41.00
CSCSTI 29.35
CSCSTI 29.31
CSCSTI 29.33
CSCSTI 29.27
CSCSTI 29.05
Russian Classification of Professions by Education 03.06.01
Russian Classification of Professions by Education 03.05.01
Russian Classification of Professions by Education 03.04.03
Russian Library and Bibliographic Classification 2
Russian Library and Bibliographic Classification 223
Russian Trade and Bibliographic Classification 614
Russian Trade and Bibliographic Classification 6135
BISAC SCI004000 Astronomy
BISAC SCI005000 Physics / Astrophysics
UDC 53
UDC 520
UDC 521
UDC 523
UDC 524
UDC 52-1
UDC 52-6
CSCSTI 41.00
CSCSTI 29.35
CSCSTI 29.31
CSCSTI 29.33
CSCSTI 29.27
CSCSTI 29.05
Russian Classification of Professions by Education 03.06.01
Russian Classification of Professions by Education 03.05.01
Russian Classification of Professions by Education 03.04.03
Russian Library and Bibliographic Classification 2
Russian Library and Bibliographic Classification 223
Russian Trade and Bibliographic Classification 614
Russian Trade and Bibliographic Classification 6135
BISAC SCI004000 Astronomy
BISAC SCI005000 Physics / Astrophysics
Language:
English
Keywords:
ISM: magnetic fields; accretion; accretion disks; magnetohydrodynamics (MHD)
Abstract (English):
This work focuses on the study of the thermal structure and observational appearance of the accretion discs of young stars that possess fossil magnetic fields. We analyse the influence of magnetohydrodynamics (MHD) effects on the disc temperature and its spectral energy distribution (SED). The simulations indicate that, with low accretion rates of $\dot{M} < 10^{-8}$ $M_{\odot}$/yr, Ohmic heating leads to an increase in the disc temperature by 100 K near the inner boundary. This effect causes an increase in the radiation flux of the disc in the mid-infrared range.
This work focuses on the study of the thermal structure and observational appearance of the accretion discs of young stars that possess fossil magnetic fields. We analyse the influence of magnetohydrodynamics (MHD) effects on the disc temperature and its spectral energy distribution (SED). The simulations indicate that, with low accretion rates of $\dot{M} < 10^{-8}$ $M_{\odot}$/yr, Ohmic heating leads to an increase in the disc temperature by 100 K near the inner boundary. This effect causes an increase in the radiation flux of the disc in the mid-infrared range.
Keywords:
ISM: magnetic fields; accretion; accretion disks; magnetohydrodynamics (MHD)
ISM: magnetic fields; accretion; accretion disks; magnetohydrodynamics (MHD)
1. Bertout C., Basri G., Bouvier J., 1988, Astrophysical Journal, 330, p. 350
2. Khaibrakhmanov S. 2024, Astronomical and Astrophysical Transactions, 34, 2, p. 139
3. Khaibrakhmanov S. and Dudorov A., 2019, Magnetohydrodynamics, 55, 1/2, p. 65
4. Khaibrakhmanov S. and Dudorov A., 2022, Astronomy Reports, 66, 10, p. 872
5. Shakura N. and Sunyaev R. 1973, Astronomy & Astrophysics, 24, p. 337
