Polarization whorls from M87* at the event horizon telescope
Abstract
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.
- Authors:
-
- Harvard Univ., Cambridge, MA (United States)
- Harvard Univ., Cambridge, MA (United States); Institute for Advanced Study, Princeton, NJ (United States). School of Natural Sciences
- Publication Date:
- Research Org.:
- Institute for Advanced Study, Princeton, NJ (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); National Science Foundation (NSF); John Templeton Foundation
- OSTI Identifier:
- 1631982
- Grant/Contract Number:
- SC0009988; DGE1144152
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Proceedings of the Royal Society. A. Mathematical, Physical and Engineering Sciences
- Additional Journal Information:
- Journal Volume: 476; Journal Issue: 2237; Journal ID: ISSN 1364-5021
- Publisher:
- The Royal Society Publishing
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; general relativity; polarimetry; conformal symmetry; black holes
Citation Formats
Lupsasca, Alexandru, Kapec, Daniel, Shi, Yichen, Gates, Delilah E. A., and Strominger, Andrew. Polarization whorls from M87* at the event horizon telescope. United States: N. p., 2020.
Web. doi:10.1098/rspa.2019.0618.
Lupsasca, Alexandru, Kapec, Daniel, Shi, Yichen, Gates, Delilah E. A., & Strominger, Andrew. Polarization whorls from M87* at the event horizon telescope. United States. https://doi.org/10.1098/rspa.2019.0618
Lupsasca, Alexandru, Kapec, Daniel, Shi, Yichen, Gates, Delilah E. A., and Strominger, Andrew. Wed .
"Polarization whorls from M87* at the event horizon telescope". United States. https://doi.org/10.1098/rspa.2019.0618. https://www.osti.gov/servlets/purl/1631982.
@article{osti_1631982,
title = {Polarization whorls from M87* at the event horizon telescope},
author = {Lupsasca, Alexandru and Kapec, Daniel and Shi, Yichen and Gates, Delilah E. A. and Strominger, Andrew},
abstractNote = {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.},
doi = {10.1098/rspa.2019.0618},
journal = {Proceedings of the Royal Society. A. Mathematical, Physical and Engineering Sciences},
number = 2237,
volume = 476,
place = {United States},
year = {Wed May 27 00:00:00 EDT 2020},
month = {Wed May 27 00:00:00 EDT 2020}
}
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