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arXiv · 1807.00835

Dark Passengers in Stellar Surveys

Almog Yalinewich·Paz Beniamini·Kenta Hotokezaka·Wei Zhu
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Abstract

We develop stellar population models to predict the number of binaries with a single luminous member is Gaia and Hipparcos. Our models yield dozens of detections of black hole - luminous companion binaries (BHLC) and hundreds to thousands of neutron star - luminous companion binaries (NSLC) with Gaia. Interestingly, our models also yield a single detection of BHLC binary with Hipparcos, and a few NSLC binaries. We also show how the statistical distribution of detected binaries with a single luminous companion can be used to constrain the formation process of neutron stars and black holes.

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Almog Yalinewich, Paz Beniamini, Kenta Hotokezaka, Wei Zhu. 2018-08-22. Dark Passengers in Stellar Surveys. https://doi.org/10.1093/mnras%2Fsty2327

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