D 2019

The central light-year of the Milky Way: How stars and gas live in a relativistic environment of a super-massive black hole

ECKART, Andreas, Michal ZAJACEK, Mónica VALENCIA-S., Marzieh PARSA, Elaheh HOSSEINI et. al.

Základní údaje

Originální název

The central light-year of the Milky Way: How stars and gas live in a relativistic environment of a super-massive black hole

Autoři

ECKART, Andreas (276 Německo), Michal ZAJACEK (703 Slovensko), Mónica VALENCIA-S. (170 Kolumbie), Marzieh PARSA (276 Německo), Elaheh HOSSEINI, Christian STRAUBMEIER (276 Německo), Matthew J. HORROBIN (826 Velká Británie a Severní Irsko), Matthias SUBROWEIT (276 Německo) a Arman TURSUNOV (860 Uzbekistán, garant, domácí)

Vydání

neuvedeno, Journal of Physics: Conference Series. Volume 1258, Issue 1, 21 October 2019, Article number 012019. 1st Sharjah International Conference on Particle Physics, Astrophysics and Cosmology, FISICPAC 2018; University of SharjahSharjah; United Arab Emirates; 11 November 2018 through 13 November 2018; Code 153573, od s. "012019-1"-"012019-15", 15 s. 2019

Nakladatel

Institute of Physics Publishing

Další údaje

Jazyk

angličtina

Typ výsledku

Stať ve sborníku

Obor

10308 Astronomy

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Forma vydání

tištěná verze "print"

Odkazy

URL

Kód RIV

RIV/47813059:19240/19:A0000566

Organizační jednotka

Filozoficko-přírodovědecká fakulta v Opavě

ISSN

DOI

http://dx.doi.org/10.1088/1742-6596/1258/1/012019

Klíčová slova anglicky

super-massive black holes; Sagittarius A*; Milky Way: central region; relativistic environment

Štítky

, NENI VE WoS, RIVOK

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 23. 3. 2020 07:51, RNDr. Jan Hladík, Ph.D.

Anotace

V originále

The central region of our Milky Way is extremely active. It harbors the closest galactic nucleus that is accessible to us allowing us to study it in fine detail. Here we present a consice summary of some of the most recent results obtained with state of the art instruments providing sensitive measurements at their highest angular resolution. The central star cluster harbors a small cusp of high velocity mostly young and dusty stars that are in orbit around the 4 million solar mass super massive black hole (SMBH) Sagittarius A* (SgrA*). Molecular and atomic gas is streaming towards this region in the form of a spiral connecting it to the Circum Nuclear Ring. Using the Large Atacama Millimeter Array (ALMA) we investigated the kinematics and composition of this material in detail highlighting signatures of star formation and the interaction with a wind emerging form the direction of SgrA*. Using results from the Very Large Telescope (VLT) we will highlight the dynamics of the ultra-fast stars and present theories on their origin. We demonstrate that one of the innermost stars shows clear signs of relativistic motion in the deep potential well of the SMBH. The interaction of plasma with SgrA* reveals that matter is orbiting and is being accreted onto the SMBH to produce powerful flares. These are detectable all across the electromagnetic spectrum and help us to understand the region close to the event horizon of SgrA* which is currently under investigation using the Event Horizon Telescope (EHT).
Zobrazeno: 25. 12. 2024 07:41