Sökning: WFRF:(Munoz Javier) > (2020-2024) > Dramatic Drop in th...
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000 | 03938naa a2200769 4500 | |
001 | oai:DiVA.org:su-229300 | |
003 | SwePub | |
008 | 240522s2024 | |||||||||||000 ||eng| | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-2293002 URI |
024 | 7 | a https://doi.org/10.3847/2041-8213/ad402e2 DOI |
040 | a (SwePub)su | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Svoboda, Jiří4 aut |
245 | 1 0 | a Dramatic Drop in the X-Ray Polarization of Swift J1727.8–1613 in the Soft Spectral State |
264 | 1 | c 2024 |
338 | a print2 rdacarrier | |
520 | a Black hole X-ray binaries exhibit different spectral and timing properties in different accretion states. The X-ray outburst of a recently discovered and extraordinarily bright source, Swift J1727.8–1613, has enabled the first investigation of how the X-ray polarization properties of a source evolve with spectral state. The 2–8 keV polarization degree was previously measured by the Imaging X-ray Polarimetry Explorer (IXPE) to be ≈4% in the hard and hard intermediate states. Here we present new IXPE results taken in the soft state, with the X-ray flux dominated by the thermal accretion disk emission. We find that the polarization degree has dropped dramatically to ≲1%. This result indicates that the measured X-ray polarization is largely sensitive to the accretion state and the polarization fraction is significantly higher in the hard state when the X-ray emission is dominated by upscattered radiation in the X-ray corona. The combined polarization measurements in the soft and hard states disfavor a very high or low inclination of the system. | |
650 | 7 | a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng |
653 | a Black hole physics | |
653 | a X-ray astronomy | |
653 | a Polarimetry | |
653 | a Stellar mass black holes | |
700 | 1 | a Dovčiak, Michal4 aut |
700 | 1 | a Steiner, James F.4 aut |
700 | 1 | a Kaaret, Philip4 aut |
700 | 1 | a Podgorný, Jakub4 aut |
700 | 1 | a Poutanen, Juri4 aut |
700 | 1 | a Veledina, Alexandra,d 1987-u Stockholms universitet,Nordiska institutet för teoretisk fysik (Nordita),University of Turku, Finland4 aut0 (Swepub:su)avele |
700 | 1 | a Muleri, Fabio4 aut |
700 | 1 | a Taverna, Roberto4 aut |
700 | 1 | a Krawczynski, Henric4 aut |
700 | 1 | a Brigitte, Maïmouna4 aut |
700 | 1 | a Datta, Sudeb Ranjan4 aut |
700 | 1 | a Bianchi, Stefano4 aut |
700 | 1 | a Muñoz-Darias, Teo4 aut |
700 | 1 | a Negro, Michela4 aut |
700 | 1 | a Cavero, Nicole Rodriguez4 aut |
700 | 1 | a Segura, Noel Castro4 aut |
700 | 1 | a Bollemeijer, Niek4 aut |
700 | 1 | a García, Javier A.4 aut |
700 | 1 | a Ingram, Adam4 aut |
700 | 1 | a Matt, Giorgio4 aut |
700 | 1 | a Nathan, Edward4 aut |
700 | 1 | a Weisskopf, Martin C.4 aut |
700 | 1 | a Altamirano, Diego4 aut |
700 | 1 | a Baldini, Luca4 aut |
700 | 1 | a Capitanio, Fiamma4 aut |
700 | 1 | a Egron, Elise4 aut |
700 | 1 | a Emami, Razieh4 aut |
700 | 1 | a Hu, Kun4 aut |
700 | 1 | a Marra, Lorenzo4 aut |
700 | 1 | a Mastroserio, Guglielmo4 aut |
700 | 1 | a Petrucci, Pierre-Olivier4 aut |
700 | 1 | a Ratheesh, Ajay4 aut |
700 | 1 | a Soffitta, Paolo4 aut |
700 | 1 | a Tombesi, Francesco4 aut |
700 | 1 | a Yang, Yi-Jung4 aut |
700 | 1 | a Zhang, Yuexin4 aut |
710 | 2 | a Stockholms universitetb Nordiska institutet för teoretisk fysik (Nordita)4 org |
773 | 0 | t Astrophysical Journal Lettersg 966:2q 966:2x 2041-8205x 2041-8213 |
856 | 4 | u https://doi.org/10.3847/2041-8213/ad402ey Fulltext |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-229300 |
856 | 4 8 | u https://doi.org/10.3847/2041-8213/ad402e |
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