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<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Limits on Stellar Objects as the Dark Matter of Our Halo: Nonbaryonic Dark Matter Seems to be Required · HackerPapers discussions</title><link>https://hackerpaper.kaipfister.de/p/astro-ph_9904401/</link><description>Collected HN comments and submissions linking this paper.</description><language>en</language><lastBuildDate>Mon, 02 Nov 2026 11:16:22 GMT</lastBuildDate><atom:link href="https://hackerpaper.kaipfister.de/p/astro-ph_9904401/feed.xml" rel="self" type="application/rss+xml" /><item><title>Limits on Stellar Objects as the Dark Matter of Our Halo: Nonbaryonic Dark Matter Seems to be Required — mentioned by xenophonf</title><link>https://news.ycombinator.com/item?id=19605307</link><guid isPermaLink="false">urn:hackerpapers:mention:astro-ph_9904401:19605307</guid><pubDate>Mon, 08 Apr 2019 14:07:03 GMT</pubDate><description>&lt;p&gt;Are you indirectly asking whether planets can be dark matter candidates? If so, those are called MACHOs (massive compact halo objects). They have been studied via the gravitational microlensing effect. The presence of MACHOs can&amp;#x27;t account for most dark matter. https://arxiv.org/pdf/astro-ph/0001272.pdf https://arxiv.org/pdf/astro-ph/9904401.pdf When you see figures like &amp;quot;1E-7 to 1E-2 M⊙ mass range&amp;quot; (from the above paper&amp;#x27;s introduction), note that a Jupiter mass is about 1E-3 M⊙---one thousandth or 0.1% the mass of the Sun. Earth is 3E-6 M⊙, the Moon is 3.7E-8 M⊙, and Pluto is 6.6E-9 M⊙; or…&lt;/p&gt;&lt;p&gt;&lt;a href="https://hackerpaper.kaipfister.de/p/astro-ph_9904401/"&gt;Paper and discussion history&lt;/a&gt;. A mention is not an endorsement.&lt;/p&gt;</description><category>astro-ph</category></item></channel></rss>
