Mass, Distance, Spin, Charge, and Orientation of the super
massive black hole SgrA*

D 2020

Mass, Distance, Spin, Charge, and Orientation of the super massive black hole SgrA*

ECKART, Andreas, Arman TURSUNOV, M. ZAJACEK, M. PARSA, E. HOSSEINI et. al.

Basic information

Original name

Mass, Distance, Spin, Charge, and Orientation of the super massive black hole SgrA*

Authors

ECKART, Andreas, Arman TURSUNOV (860 Uzbekistan, belonging to the institution), M. ZAJACEK, M. PARSA, E. HOSSEINI, M. SUBROWEIT, F. PEISSKER, C. STRAUBMEIER, M. HORROBIN and Vladimír KARAS (203 Czech Republic)

Edition

Trieste, Italy, Accretion Processes in Cosmic Sources – II (APCS2018) - Accretion onto White Dwarfs, Neutron Stars & Black Holes, p. 1-11, 11 pp. 2020

Publisher

Published by Sissa Medialab

Other information

Language

English

Type of outcome

Stať ve sborníku

Field of Study

10308 Astronomy

Country of publisher

Italy

Confidentiality degree

není předmětem státního či obchodního tajemství

Publication form

electronic version available online

References:

URL

RIV identification code

RIV/47813059:19630/20:A0000102

Organization unit

Institute of physics in Opava

ISSN

DOI

http://dx.doi.org/10.22323/1.342.0048

Keywords in English

SgrA*; GRAVITY interferometer

Abstract

V originále

SgrA* at the center of the Milky Way is the supermassive black hole that is most suited for a determination of its fundamental properties. Here, we summarize the most recent results on mass and distance, spin, and charge, and put them into the context of representative revious measurements. The data which these results are based upon have mostly been taken with large infrared single telescopes, the ESO VLTI infrastructure combined with the GRAVITY interferometer, as well as the X-ray imaging using Chandra. One finds: R_SgrA*= 8.12+-0.03 kpc and M_SgrA*= (4.10+-0.03) x 10^6 solar masses, corresponding to relative uncertainties in these quantities of about 0.4% and 0.7%. Spin values above 0.5 are suggested but the model dependent determination is not yet very conclusive. Models suggest that the spin vector is orientated towards the East and inclined towards the observer at an appreciable angle. An observational upper limit of Q_SgrA* <= 3 x 10^8 C can be given for the charge.

Citovat

ECKART, Andreas, Arman TURSUNOV, M. ZAJACEK, M. PARSA, E. HOSSEINI, M. SUBROWEIT, F. PEISSKER, C. STRAUBMEIER, M. HORROBIN and Vladimír KARAS. Mass, Distance, Spin, Charge, and Orientation of the super massive black hole SgrA*. Online. In Accretion Processes in Cosmic Sources – II (APCS2018) - Accretion onto White Dwarfs, Neutron Stars & Black Holes. Trieste, Italy: Published by Sissa Medialab, 2020, p. 1-11. ISSN 1824-8039. Available from: https://dx.doi.org/10.22323/1.342.0048.

@inproceedings{50103,
   author = {Eckart, Andreas and Tursunov, Arman and Zajacek, M. and Parsa, M. and Hosseini, E. and Subroweit, M. and Peissker, F. and Straubmeier, C. and Horrobin, M. and Karas, Vladimír},
   address = {Trieste, Italy},
   booktitle = {Accretion Processes in Cosmic Sources – II (APCS2018) - Accretion onto White Dwarfs, Neutron Stars & Black Holes},
   doi = {http://dx.doi.org/10.22323/1.342.0048},
   keywords = {SgrA*; GRAVITY interferometer},
   howpublished = {elektronická verze "online"},
   language = {eng},
   location = {Trieste, Italy},
   pages = {1-11},
   publisher = {Published by Sissa Medialab},
   title = {Mass, Distance, Spin, Charge, and Orientation of the super massive black hole SgrA*},
   url = {https://pos.sissa.it/342/048},
   year = {2020}
}

TY  - JOUR
ID  - 50103
AU  - Eckart, Andreas - Tursunov, Arman - Zajacek, M. - Parsa, M. - Hosseini, E. - Subroweit, M. - Peissker, F. - Straubmeier, C. - Horrobin, M. - Karas, Vladimír
PY  - 2020
TI  - Mass, Distance, Spin, Charge, and Orientation of the super massive black hole SgrA*
PB  - Published by Sissa Medialab
CY  - Trieste, Italy
KW  - SgrA*
KW  - GRAVITY interferometer
UR  - https://pos.sissa.it/342/048
N2  - SgrA* at the center of the Milky Way is the supermassive black hole that is most suited for a determination of its fundamental properties. Here, we summarize the most recent results on mass and distance, spin, and charge, and put them into the context of representative revious measurements. The data which these results are based upon have mostly been taken with large infrared single telescopes, the ESO VLTI infrastructure combined with the GRAVITY interferometer, as well as the X-ray imaging using Chandra. One finds: R_SgrA*= 8.12+-0.03 kpc and M_SgrA*= (4.10+-0.03) x 10^6 solar masses, corresponding to relative uncertainties in these quantities of about 0.4% and 0.7%. Spin values above 0.5 are suggested but the model dependent determination is not yet very conclusive. Models suggest that the spin vector is orientated towards the East and inclined towards the observer at an appreciable angle. An observational upper limit of Q_SgrA* <= 3 x 10^8 C can be given for the charge.
ER  -

ECKART, Andreas, Arman TURSUNOV, M. ZAJACEK, M. PARSA, E. HOSSEINI, M. SUBROWEIT, F. PEISSKER, C. STRAUBMEIER, M. HORROBIN and Vladimír KARAS. Mass, Distance, Spin, Charge, and Orientation of the super massive black hole SgrA*. Online. In \textit{Accretion Processes in Cosmic Sources – II (APCS2018) - Accretion onto White Dwarfs, Neutron Stars \&{} Black Holes}. Trieste, Italy: Published by Sissa Medialab, 2020, p.~1-11. ISSN~1824-8039. Available from: https://dx.doi.org/10.22323/1.342.0048.

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