Observable effects during gravitational microlensing of stars by NUT objects

Details Observable effects during gravitational microlensing of stars by NUT objects Observable effects during gravitational microlensing of stars by NUT objects

Jun 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007arep...51..481b&link_type=abstract

Astronomy Reports, Volume 51, Issue 6, pp.481-485

Astronomy and Astrophysics

Astronomy

95.30.Sf, 98.62.Sb, 95.35.+D, 97.10.Ri

Scientific paper

We consider observable effects during the gravitational microlensing of stars of finite angular size with a given brightness distribution across their disks by exotic objects whose space-time environment is described with the NUT metric. We demonstrate that, under certain conditions, the microlensing light curves and chromatic effects due to the wavelength dependence of the disk brightness distributions can differ considerably from those observed for a Schwarzschild gravitational lens, so that their analysis can facilitate the identification of such objects.

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