2005A&A...437L..15G


Query : 2005A&A...437L..15G

2005A&A...437L..15G - Astronomy and Astrophysics, volume 437, L15-18 (2005/7-1)

Interpreting microlensing signal in QSO 2237+0305: Stars or planets?

GIL-MERINO R. and LEWIS G.F.

Abstract (from CDS):

The multiply imaged, gravitationally lensed quasar, QSO 2237+0305, has been the subject of recent optical monitoring campaigns, with its light curves displaying uncorrelated variability attributed to gravitational microlensing by masses in the foreground galaxy. Based on these light curves, it has been claimed that the dominant microlensing population must be a population of free-floating Jupiter-like objects; such a conclusion is not new, with several similar claims in the literature. Historically, however, it has been shown that such conclusions are flawed, with an incorrect interpretation of the complex caustic network that arises at significant optical depth. This paper examines this more recent claim, illustrating that it too is flawed.

Abstract Copyright:

Journal keyword(s): gravitational lensing - microlensing - dark halo populations

Simbad objects: 6

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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 QSO J2240+0321 QSO 22 40 30.234 +03 21 30.63           ~ 661 1
2 Z 378-15 G 22 40 30.23447 +03 21 30.6290           ~ 629 0
3 QSO B2237+0305D LeI 22 40 30.28 +03 21 29.3   18.98       ~ 76 0
4 QSO B2237+0305B LeI 22 40 30.30 +03 21 30.5   17.82       ~ 76 0
5 QSO B2237+0305A LeI 22 40 30.34 +03 21 28.8   17.96       ~ 88 0
6 QSO B2237+0305C LeI 22 40 30.38 +03 21 30.0   18.66       ~ 79 0

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2022.09.26-19:27:46

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