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
Published:
27.12.2024
Subject area:
UDK 52
UDK 53
UDK 520
UDK 521
UDK 523
UDK 524
UDK 52-1
UDK 52-6
GRNTI 41.00
GRNTI 29.35
GRNTI 29.31
GRNTI 29.33
GRNTI 29.27
GRNTI 29.05
OKSO 03.06.01
OKSO 03.05.01
OKSO 03.04.03
BBK 2
BBK 223
TBK 614
TBK 6135
BISAC SCI004000 Astronomy
BISAC SCI005000 Physics / Astrophysics
UDK 53
UDK 520
UDK 521
UDK 523
UDK 524
UDK 52-1
UDK 52-6
GRNTI 41.00
GRNTI 29.35
GRNTI 29.31
GRNTI 29.33
GRNTI 29.27
GRNTI 29.05
OKSO 03.06.01
OKSO 03.05.01
OKSO 03.04.03
BBK 2
BBK 223
TBK 614
TBK 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
