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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19240%2F19%3AA0000566" target="_blank" >RIV/47813059:19240/19:A0000566 - isvavai.cz</a>

Result on the web

<a href="https://iopscience.iop.org/article/10.1088/1742-6596/1258/1/012019" target="_blank" >https://iopscience.iop.org/article/10.1088/1742-6596/1258/1/012019</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1742-6596/1258/1/012019" target="_blank" >10.1088/1742-6596/1258/1/012019</a>

Result language

angličtina

Original language name

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

Original language description

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).

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10308 - Astronomy (including astrophysics,space science)

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

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

ISBN

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ISSN

1742-6588

e-ISSN

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Number of pages

15

Pages from-to

„012019-1“-„012019-15“

Publisher name

Institute of Physics Publishing

Place of publication

neuvedeno

Event location

University of Sharjah, United Arab Emirates

Event date

Nov 11, 2018

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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