2020MNRAS.498L..25K

Query : 2020MNRAS.498L..25K

2020MNRAS.498L..25K - Mon. Not. R. Astron. Soc., 498, L25-L30 (2020/October-2)

Detecting isolated stellar-mass black holes in the absence of microlensing parallax effect.

KAROLINSKI N. and ZHU W.

Abstract (from CDS):

Gravitational microlensing can detect isolated stellar-mass black holes (BHs), which are believed to be the dominant form of Galactic BHs according to population synthesis models. Previous searches for BH events in microlensing data focused on long time-scale events with significant microlensing parallax detections. Here we show that, although BH events preferentially have long time-scales, the microlensing parallax amplitudes are so small that in most cases the parallax signals cannot be detected statistically significantly. We then identify OGLE-2006-BLG-044 to be a candidate BH event because of its long time-scale and small microlensing parallax. Our findings have implications to future BH searches in microlensing data.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): gravitational lensing: micro - methods: data analysis - stars: black holes

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 OGLE-2006-BLG-044 * 17 55 10.2300 -30 26 27.800           ~ 2 0

Query : 2020MNRAS.498L..25K

Basic data :
OGLE-2006-BLG-044 -- Star
Other object types: otypes_help 		* (), Lev (OGLE), BH? (2020MNRAS)
ICRS coord. (ep=J2000) : 		17 55 10.2300 -30 26 27.800 [ ] D 2015ApJS..216...12W
FK4 coord. (ep=B1950 eq=1950) : 		17 51 57.2012 -30 25 59.616 [ ]
Gal coord. (ep=J2000) : 		359.7699678 -02.5521539 [ ]
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Identifiers (1) :
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OGLE-2006-BLG-044

References (2 between 1850 and 2026) (Total 2)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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