Polarization whorls from M87* at the event horizon telescope

Lupsasca, Alexandru; Kapec, Daniel; Shi, Yichen; Gates, Delilah E.  A.; Strominger, Andrew

doi:10.1098/rspa.2019.0618

Polarization whorls from M87* at the event horizon telescope

Journal Article · Wed May 27 00:00:00 EDT 2020 · Proceedings of the Royal Society. A. Mathematical, Physical and Engineering Sciences

DOI:https://doi.org/10.1098/rspa.2019.0618· OSTI ID:1631982

^[1]; Kapec, Daniel ^[2]; Shi, Yichen ^[3]; Gates, Delilah E. A. ^[3]; Strominger, Andrew ^[3]

Harvard Univ., Cambridge, MA (United States); Institute for Advanced Study
Harvard Univ., Cambridge, MA (United States); Institute for Advanced Study, Princeton, NJ (United States). School of Natural Sciences
Harvard Univ., Cambridge, MA (United States)

The event horizon telescope (EHT) is anticipated to soon produce polarimetric images of the supermassive black hole at the centre of the neighbouring galaxy M87. There are indications that this black hole is rapidly spinning. General relativity predicts that such a high-spin black hole has an emergent conformal symmetry near its event horizon. In this paper, we use this symmetry to analytically predict the polarized near-horizon emissions to be seen at the EHT and find a distinctive pattern of whorls aligned with the spin.

View Accepted Manuscript (DOE)

Research Organization:: Institute for Advanced Study, Princeton, NJ (United States)

Sponsoring Organization:: USDOE Office of Science (SC); National Science Foundation (NSF); John Templeton Foundation

Grant/Contract Number:: SC0009988

OSTI ID:: 1631982

Journal Information:: Proceedings of the Royal Society. A. Mathematical, Physical and Engineering Sciences, Journal Name: Proceedings of the Royal Society. A. Mathematical, Physical and Engineering Sciences Journal Issue: 2237 Vol. 476; ISSN 1364-5021

Publisher:: The Royal Society PublishingCopyright Statement

Country of Publication:: United States

Language:: English

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79 ASTRONOMY AND ASTROPHYSICS
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general relativity
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Polarization whorls from M87* at the event horizon telescope

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