Superradiant evolution of the shadow and photon ring of Sgr A

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

Superradiant evolution of the shadow and photon ring of Sgr A. / Chen, Yifan; Roy, Rittick; Vagnozzi, Sunny; Visinelli, Luca.

In: Physical Review D, Vol. 106, No. 4, 043021, 24.08.2022.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Chen, Y, Roy, R, Vagnozzi, S & Visinelli, L 2022, 'Superradiant evolution of the shadow and photon ring of Sgr A', Physical Review D, vol. 106, no. 4, 043021. https://doi.org/10.1103/PhysRevD.106.043021

APA

Chen, Y., Roy, R., Vagnozzi, S., & Visinelli, L. (2022). Superradiant evolution of the shadow and photon ring of Sgr A. Physical Review D, 106(4), [043021]. https://doi.org/10.1103/PhysRevD.106.043021

Vancouver

Chen Y, Roy R, Vagnozzi S, Visinelli L. Superradiant evolution of the shadow and photon ring of Sgr A. Physical Review D. 2022 Aug 24;106(4). 043021. https://doi.org/10.1103/PhysRevD.106.043021

Author

Chen, Yifan ; Roy, Rittick ; Vagnozzi, Sunny ; Visinelli, Luca. / Superradiant evolution of the shadow and photon ring of Sgr A. In: Physical Review D. 2022 ; Vol. 106, No. 4.

Bibtex

@article{b6f66af111c24855a3651a6e9c0bd37b,
title = "Superradiant evolution of the shadow and photon ring of Sgr A",
abstract = "Ultralight bosons can affect the dynamics of spinning black holes (BHs) via superradiant instability, which can lead to a time evolution of the supermassive BH shadow. We study prospects for witnessing the superradiance-induced BH shadow evolution, considering ultralight vector and tensor fields. We introduce two observables sensitive to the shadow time-evolution: the shadow drift, and the variation in the azimuthal angle lapse associated to the photon ring autocorrelation. The two observables are shown to be highly complementary, depending on the observer's inclination angle. Focusing on the supermassive object Sgr A* we show that both observables can vary appreciably over human timescales of a few years in the presence of superradiant instability, leading to signatures which are well within the reach of the Event Horizon Telescope for realistic observation times (but benefiting significantly from extended observation periods) and paving the way towards probing ultralight bosons in the & SIM;10-17 eV mass range.",
keywords = "SUPERMASSIVE BLACK-HOLE, TELESCOPE RESULTS. VI., A-ASTERISK, GALACTIC-CENTER, DARK-MATTER, ACCRETION FLOW, VARIABILITY, MILKY, CONSTRAINTS, COLLAPSE",
author = "Yifan Chen and Rittick Roy and Sunny Vagnozzi and Luca Visinelli",
year = "2022",
month = aug,
day = "24",
doi = "10.1103/PhysRevD.106.043021",
language = "English",
volume = "106",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "4",

}

RIS

TY - JOUR

T1 - Superradiant evolution of the shadow and photon ring of Sgr A

AU - Chen, Yifan

AU - Roy, Rittick

AU - Vagnozzi, Sunny

AU - Visinelli, Luca

PY - 2022/8/24

Y1 - 2022/8/24

N2 - Ultralight bosons can affect the dynamics of spinning black holes (BHs) via superradiant instability, which can lead to a time evolution of the supermassive BH shadow. We study prospects for witnessing the superradiance-induced BH shadow evolution, considering ultralight vector and tensor fields. We introduce two observables sensitive to the shadow time-evolution: the shadow drift, and the variation in the azimuthal angle lapse associated to the photon ring autocorrelation. The two observables are shown to be highly complementary, depending on the observer's inclination angle. Focusing on the supermassive object Sgr A* we show that both observables can vary appreciably over human timescales of a few years in the presence of superradiant instability, leading to signatures which are well within the reach of the Event Horizon Telescope for realistic observation times (but benefiting significantly from extended observation periods) and paving the way towards probing ultralight bosons in the & SIM;10-17 eV mass range.

AB - Ultralight bosons can affect the dynamics of spinning black holes (BHs) via superradiant instability, which can lead to a time evolution of the supermassive BH shadow. We study prospects for witnessing the superradiance-induced BH shadow evolution, considering ultralight vector and tensor fields. We introduce two observables sensitive to the shadow time-evolution: the shadow drift, and the variation in the azimuthal angle lapse associated to the photon ring autocorrelation. The two observables are shown to be highly complementary, depending on the observer's inclination angle. Focusing on the supermassive object Sgr A* we show that both observables can vary appreciably over human timescales of a few years in the presence of superradiant instability, leading to signatures which are well within the reach of the Event Horizon Telescope for realistic observation times (but benefiting significantly from extended observation periods) and paving the way towards probing ultralight bosons in the & SIM;10-17 eV mass range.

KW - SUPERMASSIVE BLACK-HOLE

KW - TELESCOPE RESULTS. VI.

KW - A-ASTERISK

KW - GALACTIC-CENTER

KW - DARK-MATTER

KW - ACCRETION FLOW

KW - VARIABILITY

KW - MILKY

KW - CONSTRAINTS

KW - COLLAPSE

U2 - 10.1103/PhysRevD.106.043021

DO - 10.1103/PhysRevD.106.043021

M3 - Journal article

VL - 106

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 4

M1 - 043021

ER -

ID: 337978216