A Sun-like star orbiting a black hole (el-badry)

A Sun-like star orbiting a black hole [@el-badrySunlikeStarOrbiting2022]

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Key Properties

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$M_{2,bh}=9.62\pm .18M_{\odot }$ $M_{1,sol}=.93$ $P_{orb}=185.6\text{days}$ $e=.45$, weak natal kick

Abstract

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Identifies a nearby sun-like star orbiting a BH

Intro

“BH X-ray binaries all have relatively short orbital periods. In Roche lobe overflowing systems with low-mass ($.1M_{\odot }$) main-sequence donors (“LMXBs”), mass transfer only occurs at periods $P_{orb}\lesssim 1\text{day}$. Systems with massive or evolved donors can overflow their Roche lobes at somewhat longer periods. The longest orbital period for a known BH X-ray binary is 33 days, in GRS 1915+105 (Greiner et al. 2001), where the donor is a red giant.”

And yet, the sim seems to suggest that it started at 4k days