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Cross-matching of OGLE III and GAIA catalogues: Investigation of dark-lens microlensing candidates

Dehghani, A ; Sharif University of Technology | 2022

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  1. Type of Document: Article
  2. DOI: 10.1142/S0218271822500511
  3. Publisher: World Scientific , 2022
  4. Abstract:
  5. In this work, we use 13 microlensing candidates with dark lenses from OGLE III catalogue [L. Wyrzykowski et al., Mon. Not. R. Astron. Soc. 458 (2016) 3012.] and cross-match them with the GAIA catalogue. We identify the microlensing source stars in the GAIA catalogue by comparing the coordinate and the magnitude of stars and using the proper motion and the parallax parameters of the source stars. Combining with the microlensing light curves as well as the microlensing parallax effect, we determine the mass and the distance of lenses from Earth. We conclude that the lens for this set of microlensing events for the massive lenses are black hole and for the small lenses are neutron/white dwarf candidates. © 2022 World Scientific Publishing Company
  6. Keywords:
  7. Astrometry ; Black holes ; Gravitational lensing ; Micro ; Parallaxes ; Stars
  8. Source: International Journal of Modern Physics D ; Volume 31, Issue 7 , 2022 ; 02182718 (ISSN)
  9. URL: https://arxiv.org/abs/2004.04615