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Sökning: id:"swepub:oai:DiVA.org:kth-299620" > The evolution of ra...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00005376naa a2200589 4500
001oai:DiVA.org:kth-299620
003SwePub
008210813s2021 | |||||||||||000 ||eng|
009oai:DiVA.org:su-196983
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-2996202 URI
0247 a https://doi.org/10.1093/mnras/stab15312 DOI
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1969832 URI
040 a (SwePub)kthd (SwePub)su
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Paice, J. A.u Univ Southampton, Dept Phys & Astron, Southampton SO17 1BJ, Hants, England.;Interuniv Ctr Astron & Astrophys, Pune 411007, Maharashtra, India.4 aut
2451 0a The evolution of rapid optical/X-ray timing correlations in the initial hard state of MAXIJ1820+070
264 c 2021-05-27
264 1b Oxford University Press (OUP),c 2021
338 a print2 rdacarrier
500 a QC 20220413
520 a We report on a multiepoch campaign of rapid optical/X-ray timing observations of the superbright 2018 outburst of MAXIJ1820+070, a black hole low-mass X-ray binary system. The observations spanned 80 d in the initial hard state and were taken with NTT/ULTRACAM and GTC/HiPERCAM in the optical (u(s)g(s)r(s)i(s)z(s) filters at time resolutions of 8-300Hz) and with ISS/NICER in X-rays. We find (i) a growing anticorrelation between the optical and X-ray light curves, (ii) a steady, positive correlation at an optical lag of similar to 0.2s (with a longer lag at longer wavelengths) present in all epochs, and (iii) a curious positive correlation at negative optical lags in the last, X-ray softest epoch, with longer wavelengths showing a greater correlation and a more negative lag. To explain these, we postulate the possible existence of two synchrotron-emitting components - a compact jet and a hot flow. In our model, the significance of the jet decreases over the outburst, while the hot flow remains static (thus, relatively, increasing in significance). We also discuss a previously discovered quasi-periodic oscillation and note how it creates coherent optical time lags, stronger at longer wavelengths, during at least two epochs.
650 7a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng
650 7a NATURVETENSKAPx Fysik0 (SwePub)1032 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciences0 (SwePub)1032 hsv//eng
653 a accretion
653 a accretion discs
653 a X-rays: binaries
653 a X-rays: individual: MAXIJ1820+070
653 a black holes
7001 a Gandhi, P.u Univ Southampton, Dept Phys & Astron, Southampton SO17 1BJ, Hants, England.4 aut
7001 a Shahbaz, T.u Inst Astrofis Canarias IAC, E-38205 San Cristobal la Laguna, Tenerife, Spain.;Univ La Laguna ULL, Dept Astrofis, E-38206 San Cristobal la Laguna, Tenerife, Spain.4 aut
7001 a Veledina, Alexandrau Stockholms universitet,KTH,Nordic Institute for Theoretical Physics NORDITA,Univ Turku, Dept Phys & Astron, FI-20014 Turku, Finland.;Stockholm Univ, Roslagstullsbacken 23, SE-10691 Stockholm, Sweden.,Nordiska institutet för teoretisk fysik (Nordita),University of Turku, Finland4 aut0 (Swepub:su)avele
7001 a Malzac, J.u IRAP Univ Toulouse, CNES, UPS, CNRS, F-31400 Toulouse, France.4 aut
7001 a Buckley, D. A. H.u South African Astron Observ, Observ Rd, ZA-7925 Cape Town, South Africa.;Univ Cape Town, Dept Astron, Private Bag X3, ZA-7701 Rondebosch, South Africa.4 aut
7001 a Charles, P. A.u Univ Southampton, Dept Phys & Astron, Southampton SO17 1BJ, Hants, England.4 aut
7001 a Rajwade, K.u Univ Manchester, Dept Phys & Astron, Oxford Rd, Manchester M13 9PL, Lancs, England.4 aut
7001 a Dhillon, V. S.u Inst Astrofis Canarias IAC, E-38205 San Cristobal la Laguna, Tenerife, Spain.;Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England.4 aut
7001 a Littlefair, S. P.u Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England.4 aut
7001 a Marsh, T. R.u Univ Warwick, Dept Phys, Astron & Astrophys Grp, Gibbet Hill Rd, Coventry CV4 7AL, W Midlands, England.4 aut
7001 a Uttley, P.u Univ Amsterdam, Astron Inst Anton Pannekoek, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands.4 aut
7001 a Vincentelli, F. M.u Univ Southampton, Dept Phys & Astron, Southampton SO17 1BJ, Hants, England.4 aut
7001 a Misra, R.u Interuniv Ctr Astron & Astrophys, Pune 411007, Maharashtra, India.4 aut
7102 a Univ Southampton, Dept Phys & Astron, Southampton SO17 1BJ, Hants, England.;Interuniv Ctr Astron & Astrophys, Pune 411007, Maharashtra, India.b Univ Southampton, Dept Phys & Astron, Southampton SO17 1BJ, Hants, England.4 org
7730 t Monthly notices of the Royal Astronomical Societyd : Oxford University Press (OUP)g 505:3, s. 3452-3469q 505:3<3452-3469x 0035-8711x 1365-2966
8564 u https://arxiv.org/pdf/2105.11769.pdf
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-299620
8564 8u https://doi.org/10.1093/mnras/stab1531
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-196983

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