Distinguishing an ejected blob from alternative flare models at the Galactic Centre with GRAVITY

F. H. Vincent; T. Paumard; G. Perrin; P. Varniere; F. Casse; F. Eisenhauer; S. Gillessen; P. J. Armitage

doi:10.1093/mnras/stu812

Distinguishing an ejected blob from alternative flare models at the Galactic Centre with GRAVITY

F. H. Vincent
, T. Paumard
, G. Perrin
, P. Varniere
, F. Casse
, F. Eisenhauer
, S. Gillessen
, P. J. Armitage

Physics and Astronomy

Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences
LESIA, CNRS UMR, Université Paris Diderot
Université Paris Cité
Max Planck Institute for Extraterrestrial Physics

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

The black hole at the Galactic Centre exhibits regularly flares of radiation, the origin of which is still not understood. In this paper, we study the ability of the near-future GRAVITY infrared instrument to constrain the nature of these events.We develop realistic simulations of GRAVITY astrometric data sets for various flare models.We show that the instrument will be able to distinguish an ejected blob from alternative flare models, provided the blob inclination is ≳45°, the flare brightest magnitude is 14 ≲ mK ≲ 15 and the flare duration is ≳1 h 30 min.

Original language	English
Pages (from-to)	3477-3487
Number of pages	11
Journal	Monthly Notices of the Royal Astronomical Society
Volume	441
Issue number	4
DOIs	https://doi.org/10.1093/mnras/stu812
State	Published - Jun 2014

Keywords

Astrometry
Black hole physics
Galaxy: centre
Instrumentation: interferometers

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10.1093/mnras/stu812

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title = "Distinguishing an ejected blob from alternative flare models at the Galactic Centre with GRAVITY",

abstract = "The black hole at the Galactic Centre exhibits regularly flares of radiation, the origin of which is still not understood. In this paper, we study the ability of the near-future GRAVITY infrared instrument to constrain the nature of these events.We develop realistic simulations of GRAVITY astrometric data sets for various flare models.We show that the instrument will be able to distinguish an ejected blob from alternative flare models, provided the blob inclination is ≳45°, the flare brightest magnitude is 14 ≲ mK ≲ 15 and the flare duration is ≳1 h 30 min.",

keywords = "Astrometry, Black hole physics, Galaxy: centre, Instrumentation: interferometers",

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T1 - Distinguishing an ejected blob from alternative flare models at the Galactic Centre with GRAVITY

AU - Vincent, F. H.

AU - Paumard, T.

AU - Perrin, G.

AU - Varniere, P.

AU - Casse, F.

AU - Eisenhauer, F.

AU - Gillessen, S.

AU - Armitage, P. J.

PY - 2014/6

Y1 - 2014/6

N2 - The black hole at the Galactic Centre exhibits regularly flares of radiation, the origin of which is still not understood. In this paper, we study the ability of the near-future GRAVITY infrared instrument to constrain the nature of these events.We develop realistic simulations of GRAVITY astrometric data sets for various flare models.We show that the instrument will be able to distinguish an ejected blob from alternative flare models, provided the blob inclination is ≳45°, the flare brightest magnitude is 14 ≲ mK ≲ 15 and the flare duration is ≳1 h 30 min.

AB - The black hole at the Galactic Centre exhibits regularly flares of radiation, the origin of which is still not understood. In this paper, we study the ability of the near-future GRAVITY infrared instrument to constrain the nature of these events.We develop realistic simulations of GRAVITY astrometric data sets for various flare models.We show that the instrument will be able to distinguish an ejected blob from alternative flare models, provided the blob inclination is ≳45°, the flare brightest magnitude is 14 ≲ mK ≲ 15 and the flare duration is ≳1 h 30 min.

KW - Astrometry

KW - Black hole physics

KW - Galaxy: centre

KW - Instrumentation: interferometers

UR - https://www.scopus.com/pages/publications/84903207249

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DO - 10.1093/mnras/stu812

M3 - Article

AN - SCOPUS:84903207249

SN - 0035-8711

VL - 441

SP - 3477

EP - 3487

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 4

ER -

Distinguishing an ejected blob from alternative flare models at the Galactic Centre with GRAVITY

Abstract

Keywords

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