https://hackerpaper.kaipfister.de/p/gr-qc_0504018/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:16:22 GMThttps://news.ycombinator.com/item?id=36738648urn:hackerpapers:mention:gr-qc_0504018:36738648Sat, 15 Jul 2023 16:47:22 GMT<p>&gt; If that&#x27;s what this is No, this is about the nanohertz gravitational wave &quot;background&quot;, which comes from massive binaries with orbital periods of on the order of months to years. Sources are expected to be be randomly arranged in spherical coordinates (up to an unfortunately low radial distance cutoff), like the (low-redshift) galaxies they likely live in the middle of. Primordially, most still-viable types of inflation produce gravitational waves on all length scales, so some very short wavelength primordial GWs are in principle accessible to us despite the large cosmological redshift (z…</p><p><a href="https://hackerpaper.kaipfister.de/p/gr-qc_0504018/">Paper and discussion history</a>. A mention is not an endorsement.</p>gr-qc