Mass of the active galactic nucleus black hole XMMUJ134736.6+173403

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19240%2F19%3AA0000426" target="_blank" >RIV/47813059:19240/19:A0000426 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.aanda.org/articles/aa/abs/2019/02/aa34774-18/aa34774-18.html" target="_blank" >https://www.aanda.org/articles/aa/abs/2019/02/aa34774-18/aa34774-18.html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/201834774" target="_blank" >10.1051/0004-6361/201834774</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Mass of the active galactic nucleus black hole XMMUJ134736.6+173403

Popis výsledku v původním jazyce

A recent study of the X-ray source XMMUJ134736.6+173403 has revealed a strong quasi-periodic modulation in the X-ray flux. The observation of two quasiperiodic oscillations (QPOs) that occur on a daily timescale and exhibit a 3:1 frequency ratio strongly supports the evidence for the presence of an active galactic nucleus black hole (AGN BH). Assuming an orbital origin of QPOs, we calculated the upper and lower limit on AGN BH mass M and found M approximate to 10^(7)-10^(9) M_Sun. When we compare this to mass estimates of other sources, XMMUJ134736.6+173403 appears to be the most massive source with commensurable QPO frequencies, and its mass represents the current observational upper limit on AGN BH mass based on QPO observations. We note that it will be crucial for the falsification of particular resonance models of QPOs whether only a single QPO with a frequency that completes the harmonic sequence 3:2:1 is found in this source, or if a new different pair of QPOs with frequencies in the 3: 2 ratio is found. The former case would agree with the prediction of the 3:2 epicyclic resonance model and BH mass M approximate to (5a^(2) + 8a + 8) x 10^(7) M_Sun, where a is a dimensionless BH spin.

Název v anglickém jazyce

Mass of the active galactic nucleus black hole XMMUJ134736.6+173403

Popis výsledku anglicky

A recent study of the X-ray source XMMUJ134736.6+173403 has revealed a strong quasi-periodic modulation in the X-ray flux. The observation of two quasiperiodic oscillations (QPOs) that occur on a daily timescale and exhibit a 3:1 frequency ratio strongly supports the evidence for the presence of an active galactic nucleus black hole (AGN BH). Assuming an orbital origin of QPOs, we calculated the upper and lower limit on AGN BH mass M and found M approximate to 10^(7)-10^(9) M_Sun. When we compare this to mass estimates of other sources, XMMUJ134736.6+173403 appears to be the most massive source with commensurable QPO frequencies, and its mass represents the current observational upper limit on AGN BH mass based on QPO observations. We note that it will be crucial for the falsification of particular resonance models of QPOs whether only a single QPO with a frequency that completes the harmonic sequence 3:2:1 is found in this source, or if a new different pair of QPOs with frequencies in the 3: 2 ratio is found. The former case would agree with the prediction of the 3:2 epicyclic resonance model and BH mass M approximate to (5a^(2) + 8a + 8) x 10^(7) M_Sun, where a is a dimensionless BH spin.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach<br>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 periodika

Astronomy & Astrophysics

ISSN

0004-6361

e-ISSN

1432-0746

Svazek periodika

622

Číslo periodika v rámci svazku

January

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

5

Strana od-do

„L8-1“-„L8-5“

Kód UT WoS článku

000457210000001

EID výsledku v databázi Scopus

2-s2.0-85060970350