Ud. está consultando:

Trabajos publicados

Búsqueda avanzada

Búsqueda por autor: Zubieta, Ezequiel.
Resultado 7 de 7
 
LDR ·····naa##22·····5##4500
001 001954
005 20230424091947.0
008 230421s2023###########f#####|0||#0#und#d
245 10 $a Fast transitions of X-ray variability in the black hole transient GX 339-4: Comparison with MAXI J1820+070 and MAXI J1348-630 / $c Zi-Xu Yang ... [et al.].
490 0# $a Trabajos publicados del IAR ; $v no. 1737
520 ## $a Fast transitions between different types of power density spectra (PDS) happening over timescales of several tens of seconds are rare phenomena in black hole X-ray binaries. In this paper, we report a broadband spectral-timing analysis of the fast transitions observed in the 2021 outburst of GX 339-4 using NICER and Insight-HXMT observations. We observe transitions between band-limited noise-dominated PDS and type-B quasi-periodic oscillations (QPOs), and their rapid appearance or disappearance. We also make a detailed comparison between the fast transitions in GX 339-4 with those seen in MAXI J1820+070 and MAXI J1348-630. By comparing the spectra of the periods with and without type-B QPOs, we find that the spectral ratios above 10 keV are nearly constant or slightly decreasing, and the values are different between sources. Below 10 keV, the flux change of the Comptonization componexsnt is inversely proportional to the flux change of the thermal component, suggesting that the appearance of type-B QPOs is associated with a redistribution of the accretion power between the disc and the Comptonizing emission region. The spectral ratios between the periods with type-B QPO and those with broadband noise are significantly different from that with type-B QPO and without type-B QPO, where the ratios (type-B QPO/broadband noise) show a maximum at around 4 keV and then decrease gradually towards high energies. Finally, we discuss the possible change of the geometry of the inner accretion flow and/or jet during the transitions
773 0# $7 ||as $t Monthly Notices of the Royal Astronomical Society $x 0035-8711 $g Vol. (2023), p.
700 1# $a Yang, Zi-Xu.
700 1# $a Zhang, Liang.
700 1# $a Zhang, S. N.
700 1# $a Méndez, Mariano.
700 1# $a García, Federico.
700 1# $a Huang, Yue.
700 1# $a Bu, Qingcui.
700 1# $a Liu, He-Xin.
700 1# $a Yu, Wei.
700 1# $a Wang, P. J.
700 1# $a Tao, L.
700 1# $a Altamirano, D.
700 1# $a Qu, Jin-Lu.
700 1# $a Zhang, S.
700 1# $a Ma, X.
700 1# $a Song, L. M.
700 1# $a Jia, S. M.
700 1# $a Ge, M. Y.
700 1# $a Liu, Q. Z.
700 1# $a Yan, J. Z.
700 1# $a Li, T. M.
700 1# $a Ren, X. Q.
700 1# $a Ma, R. C.
700 1# $a Zhang, Yuexin.
700 1# $a Xu, Y. C.
700 1# $a Ma, B. Y.
700 1# $a Du, Y. F.
700 1# $a Fu, Y. C.
700 1# $a Xiao, Y. X.
700 1# $a Li, P. P.
700 1# $a Jin, P.
700 1# $a Zhao, S. J.
700 1# $a Zhao, Q. C.
653 ## $a Accretion discs.
653 ## $a Black holes.
653 ## $a X-ray binaries.
040 ## $a AR-BaBIR $b spa
856 41 $u https://ui.adsabs.harvard.edu/abs/2023MNRAS.tmp..760Y $y ADS
856 ## $u https://www.iar.unlp.edu.ar/biblio/htdocs/artic/contri/1737.pdf $y PDF

Explorar índices alfabéticos


Ingrese las primeras letras del autor o título que busca. Omita artículos iniciales en títulos.
Recorrer el catálogo completo (por orden de ubicación del material)

Novedades

Enlaces