[vsnet-grb-info 22645] LIGO/Virgo S190521r: Gaia Photometric Alerts transient candidate

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  24744
SUBJECT: LIGO/Virgo S190521r: Gaia Photometric Alerts transient candidate
DATE:    19/06/04 16:31:05 GMT
FROM:    Deepak Eappachen at SRON Netherlands  <d.eappachen at sron.nl>

Z. Kostrzewa-Rutkowska, D. Eappachen (SRON/RU), S. Hodgkin, A. Delgado, 
D.L. Harrison, M.van Leeuwen, G. Rixon, A. Yoldas (IoA Cambridge), P.G. Jonker
(SRON/RU) on behalf of Gaia Alerts team report the discovery of a transient
candidate within the probability skymap of S190521r (LIGO/VIRGO
Collaboration GCN 24632):

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Name      	TNSid    	 Date [TCB]       		RaDeg     DecDeg    AlertMag URL
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Gaia19cbb  AT2019gui  2019-06-01T13:45:58	306.02533  32.05174  18.28
http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia19cbb/

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candidate QSO brightens by 0.7 mag, the source falls in the high confidence region (within the 2% contour of the bayestar map)

Acknowledgements: This work has made use of data from the European Space
Agency (ESA) mission Gaia (https://www.cosmos.esa.int/gaia), processed by
the Gaia Data Processing and Analysis Consortium (DPAC,
https://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC
has been provided by national institutions, in particular the institutions
participating in the Gaia Multilateral Agreement. ZKR, DE, and PGJ
acknowledge support from the European Research Council under ERC
Consolidator Grant agreement no 647208.