<story><title>A Sun-like star orbiting a boson star</title><url>https://arxiv.org/abs/2304.09140</url></story><parent_chain><item><author>spuz</author><text>This paper doesn&amp;#x27;t seem to agree:&lt;p&gt;&amp;gt; the scenario of a central black
hole requires unreasonable amount of fine-tuning within the usual evolutionary channels. In particular, if the system is expected to have formed as a binary in isolation, a common envelope formation
scenario is rather unlikely, given the system’s arrangement. This requires an extreme, and possibly
unphysical, tuning of the relevant parameters of the evolutionary channel under consideration. Moreover, formation within a globular cluster is also improbable given the geometrical characteristics of
the observed orbit. Other evolutionary channels such as formation without a common envelope or via
a hierarchical triple also seem unlikely for similar reasons.&lt;p&gt;What makes you think their proposal isn&amp;#x27;t more likely than a black hole?</text></item><item><author>metalliqaz</author><text>absolutely not confirmed to be a boson star.  Most likely a black hole found its way there under unusual circumstances</text></item></parent_chain><comment><author>jwuphysics</author><text>&amp;gt; What makes you think their proposal isn&amp;#x27;t more likely than a black hole?&lt;p&gt;Because a boson star is purely theoretical and I have a much stronger observational prior that the object is a black hole.</text></comment>
<story><title>A Sun-like star orbiting a boson star</title><url>https://arxiv.org/abs/2304.09140</url></story><parent_chain><item><author>spuz</author><text>This paper doesn&amp;#x27;t seem to agree:&lt;p&gt;&amp;gt; the scenario of a central black
hole requires unreasonable amount of fine-tuning within the usual evolutionary channels. In particular, if the system is expected to have formed as a binary in isolation, a common envelope formation
scenario is rather unlikely, given the system’s arrangement. This requires an extreme, and possibly
unphysical, tuning of the relevant parameters of the evolutionary channel under consideration. Moreover, formation within a globular cluster is also improbable given the geometrical characteristics of
the observed orbit. Other evolutionary channels such as formation without a common envelope or via
a hierarchical triple also seem unlikely for similar reasons.&lt;p&gt;What makes you think their proposal isn&amp;#x27;t more likely than a black hole?</text></item><item><author>metalliqaz</author><text>absolutely not confirmed to be a boson star.  Most likely a black hole found its way there under unusual circumstances</text></item></parent_chain><comment><author>nawgz</author><text>Is a &amp;quot;boson star&amp;quot; even a confirmed physical construct? I can see confirmed neutron stars like RXJ1856 that they think might be a strange star, but... Just based on what is a confirmed physical construct in the universe, a black hole seems far likelier. Obviously they address this in a way I&amp;#x27;m not knowledgeable enough to argue against.&lt;p&gt;Regardless, it will be an interesting scenario to watch evolve!</text></comment>