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

@article{37281,
   author = {Goluchová, Kateřina and Török, Gabriel and Šrámková, Eva and Abramowicz, Marek and Stuchlík, Zdeněk and Horák, Jiří},
   article_number = {January},
   doi = {http://dx.doi.org/10.1051/0004-6361/201834774},
   keywords = {X-rays: binaries; black hole physics; accretion; accretion disks},
   language = {eng},
   issn = {0004-6361},
   journal = {Astronomy & Astrophysics},
   title = {Mass of the active galactic nucleus black hole XMMUJ134736.6+173403},
   url = {https://www.aanda.org/articles/aa/abs/2019/02/aa34774-18/aa34774-18.html},
   volume = {622},
   year = {2019}
}

TY  - JOUR
ID  - 37281
AU  - Goluchová, Kateřina - Török, Gabriel - Šrámková, Eva - Abramowicz, Marek - Stuchlík, Zdeněk - Horák, Jiří
PY  - 2019
TI  - Mass of the active galactic nucleus black hole XMMUJ134736.6+173403
JF  - Astronomy & Astrophysics
VL  - 622
IS  - January
SP  - "L8-1"-"L8-5"
EP  - "L8-1"-"L8-5"
SN  - 00046361
KW  - X-rays: binaries
KW  - black hole physics
KW  - accretion
KW  - accretion disks
UR  - https://www.aanda.org/articles/aa/abs/2019/02/aa34774-18/aa34774-18.html
L2  - https://www.aanda.org/articles/aa/abs/2019/02/aa34774-18/aa34774-18.html
N2  - 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.
ER  - 

GOLUCHOVÁ, Kateřina, Gabriel TÖRÖK, Eva ŠRÁMKOVÁ, Marek ABRAMOWICZ, Zdeněk STUCHLÍK and Jiří HORÁK. Mass of the active galactic nucleus black hole XMMUJ134736.6+173403. \textit{Astronomy \&{} Astrophysics}. 2019, vol.~622, January, p.~''L8-1''-''L8-5'', 5 pp. ISSN~0004-6361. Available from: https://dx.doi.org/10.1051/0004-6361/201834774.