Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Vierdayanti Kiki"'
Autor:
Alfarizki Fahmi Iman, Vierdayanti Kiki
Publikováno v:
EPJ Web of Conferences, Vol 240, p 04001 (2020)
Investigation of spectral evolution of four black hole candidates was carried out by using color-color diagram as well as spectral fitting on Swift/XRT data. Newly found candidates, which are classified as low-mass X-ray binary system based on their
Externí odkaz:
https://doaj.org/article/e387872778904126bd4b1fd94c1cadf1
Autor:
Hafizah Izatul, Vierdayanti Kiki
Publikováno v:
EPJ Web of Conferences, Vol 240, p 07005 (2020)
We analyze the spectral evolution of ultraluminous X-ray source (ULX) M82 X-1 by means of spectral fitting. We use selected Swift/XRT data in 2014 and 2015. The flux of M82 X-1 increased by a factor of 2-3 from 2014 to 2015. Most of the data in 2015
Externí odkaz:
https://doaj.org/article/de3a5acc3ba847509173fad0f9958933
Active Galactic Nuclei (AGN), such as Seyfert galaxies, quasars, etc., show light variations in all wavelength bands, with various amplitude and in many time scales. The variations usually look erratic, not periodic nor purely random. Many of these o
Externí odkaz:
http://arxiv.org/abs/1107.1552
We propose a methodology to derive a black-hole mass for super-critical accretion flow. Here, we use the extended disk blackbody (extended DBB) model, a fitting model in which the effective temperature profile obeys the relation $T_{\rm eff} \propto
Externí odkaz:
http://arxiv.org/abs/0712.1857
Publikováno v:
ASP Conference Series; 2024, Vol. 536, p173-177, 5p
Publikováno v:
PASJ 58, 915-923, 2006 October 25
An open question remains whether Ultraluminous X-ray Sources (ULXs) really contain intermediate-mass black holes (IMBHs). We carefully investigated the XMM-Newton EPIC spectra of the four ULXs that were claimed to be strong candidates of IMBHs by sev
Externí odkaz:
http://arxiv.org/abs/astro-ph/0609017
X-ray nova (XRN), a black hole binary with transient nature, poses a serious challenge for standard disk theory. Outburst and quiescent phenomena observed from the source cannot be explained by steady-state accretion onto the compact object. Disk ins
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::03d524cc4126e71f4a6c4d9443663740
Autor:
Soonthornthum, B., Malasan, H.L., Chey, C.O., Abu Kassim, H., Myint, K.S., Celebre, C., Diep, P.N., Yang, A., Hafizah, Izatul, Vierdayanti, Kiki
Publikováno v:
EPJ Web of Conferences; 8/21/2020, Vol. 240, p1-7, 7p
Autor:
Soonthornthum, B., Malasan, H.L., Chey, C.O., Abu Kassim, H., Myint, K.S., Celebre, C., Diep, P.N., Yang, A., Alfarizki, Fahmi Iman, Vierdayanti, Kiki
Publikováno v:
EPJ Web of Conferences; 8/21/2020, Vol. 240, p1-10, 10p