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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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).

Název v anglickém jazyce

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

Popis výsledku anglicky

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).

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

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

—

ISSN

1742-6588

e-ISSN

—

Počet stran výsledku

15

Strana od-do

„012019-1“-„012019-15“

Název nakladatele

Institute of Physics Publishing

Místo vydání

neuvedeno

Místo konání akce

University of Sharjah, United Arab Emirates

Datum konání akce

11. 11. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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