English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We describe the first complete polarimetric dataset of the entire outburst ofa low-mass black hole X-ray binary system and discuss the constraints forgeometry and radiative mechanisms it imposes. During the decaying hard state,when the optical flux is dominated by the non-thermal component, the observedpolarization is consistent with the interstellar values in all filters. Duringthe soft state, the intrinsic polarization of the source is small, $\sim 0.15$per cent in $B$ and $V$ filters, and is likely produced in the irradiated disc.A much higher polarization, reaching $\sim 0.5$ per cent in $V$ and $R$filters, at position angle of $\sim 25^\circ$ observed in the rising hard statecoincides in time with the detection of winds in the system. This anglecoincides with the position angle of the jet. The detected optical polarizationis best explained by scattering of the non-thermal (hot flow or jet base)radiation in an equatorial wind.

Disc and wind in black hole X-ray binary MAXIJ1820+070 observed through polarized light during its 2018 outburst