INTERPRETATION OF POLARIMETRIC OBSERVATIONS OF HYPERBOLIC COMETS
Authors:
1.
Crimean Astrophysical Observatory of the Russian Academy of Sciences
2.
Crimean Astrophysical Observatory of the Russian Academy of Sciences
3.
Crimean Astrophysical Observatory of the Russian Academy of Sciences
Institute of Astronomy of the Russian Academy of Sciences
Institute of Astronomy of the Russian Academy of Sciences
Type:
Сonference article
Published:
27.12.2024
Subject area:
52
53
520
521
523
524
52-1
52-6
41.00
29.35
29.31
29.33
29.27
29.05
03.06.01
03.05.01
03.04.03
2
223
614
6135
SCI004000
SCI005000
53
520
521
523
524
52-1
52-6
41.00
29.35
29.31
29.33
29.27
29.05
03.06.01
03.05.01
03.04.03
2
223
614
6135
SCI004000
SCI005000
Language:
English
Keywords:
comets: polarimetry; computer simulation
Abstract (English):
Polarimetric observations of comet C/2013 X1 (PANSTARRS) were compared with polarimetric data taken from the Polarimetric Comet Observations Database. To obtain a synthetic phase dependence of the degree of linear polarization of hyperbolic comets, the data were interpreted using computer simulations. In this case, computer simulation means calculating the characteristics of light scattered by particles of irregular shape and a certain chemical composition. Simulations showed that the dust ball would have to be 74 % amorphous carbon, 25 % magnesium-rich silicates, and 1 % water ice to reproduce the observed linear polarization values.
Polarimetric observations of comet C/2013 X1 (PANSTARRS) were compared with polarimetric data taken from the Polarimetric Comet Observations Database. To obtain a synthetic phase dependence of the degree of linear polarization of hyperbolic comets, the data were interpreted using computer simulations. In this case, computer simulation means calculating the characteristics of light scattered by particles of irregular shape and a certain chemical composition. Simulations showed that the dust ball would have to be 74 % amorphous carbon, 25 % magnesium-rich silicates, and 1 % water ice to reproduce the observed linear polarization values.
Keywords:
comets: polarimetry; computer simulation
comets: polarimetry; computer simulation
1. Halder P. and Ganesh S., 2021, Monthly Notices of the Royal Astronomical Society, 501, 2, p. 1766
2. Ivanova O., Rosenbush V., Afanasiev V., et al., 2017, Icarus, 284, p. 167
3. Li A. and Greenberg J.M., 1997, Astronomy & Astrophysics, 323, p. 566
4. Scott A. and Duley W.W., 1996, Astrophysical Journal Supplement, 105, p. 401
5. Shubina O., Ivanova O., Petrov D., et al., 2024, Monthly Notices of the Royal Astronomical Society, 528, 4, p. 7027
6. Woodward C.E., Wooden D.H., Harker D.E., et al., 2021, Planetary Science Journal, 2, 1, id. 25
7. Zhuzhulina E., Petrov D., Kiselev N., et al., 2022, Journal of Quantitative Spectroscopy and Radiative Transfer, 290, id. 108321
