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Chris Monahan</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Sher, Marc <mtsher@wm.edu><br>
<b>Sent:</b> 28 June 2023 10:42<br>
<b>To:</b> physics2017@physics.wm.edu <physics2017@physics.wm.edu><br>
<b>Subject:</b> announcements tomorrow</font>
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Dear colleagues - </div>
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There will be two major announcements tomorrow.</div>
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At 1:00 (Eastern), Nanograv will make a major announcement. It will be at <a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__nanograv.org_news_2023Announcement&d=DwMFAg&c=CJqEzB1piLOyyvZjb8YUQw&r=phC8jtUHUVIl1OXaA25HKnc5L16EvLwhrqx4rXYGPWA&m=3jD5S2VOmVadIkFSUUbh1q6X07_A7GeGyJ0CzXrYzN60NOzDWdrgv8ELYwZErX_6&s=biiznjoVBnIBcnvi9wrmZ2HfgpvUdgEw4EOFyIK73ds&e=" originalsrc="https://nanograv.org/news/2023Announcement" shash="QGU82ahMZTTKtRKvjBTH22V8pZL2pwGtC2kezwa2n/443ThLmh7QnGUtG4oZ90ZheUHzHCtkTXr7LHA/2YS5wWOKtJoVfSzF69UsFc59N6pLy8TJdR62U8df3f2NS0JSn4/utT3yCvzZ0/Y04s3suiIjROws3551dvCMyHrCGWg=" target="_blank" rel="noopener noreferrer" data-auth="NotApplicable" data-linkindex="0" class="x_ContentPasted0">
https://nanograv.org/news/2023Announcement</a></div>
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The expectation (hope?) is that they will announce a 5-sigma discovery of gravitational waves in the nanoHertz frequency range. This uses a network of pulsars to provide precise clocks and looks for variations as gravitational waves pass by. The inverse
of a nanoHertz is 30 years, so this would correspond to the merger of supermassive black holes (which are typically inner solar-system size).
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At 2:00, IceCube will make an announcement at <a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__icecube.wisc.edu_news_collaboration_2023_06_icecube-2Dwebinar-2D2_&d=DwMFAg&c=CJqEzB1piLOyyvZjb8YUQw&r=phC8jtUHUVIl1OXaA25HKnc5L16EvLwhrqx4rXYGPWA&m=3jD5S2VOmVadIkFSUUbh1q6X07_A7GeGyJ0CzXrYzN60NOzDWdrgv8ELYwZErX_6&s=_cwd7mfHG-it9qWgBp9mnz8SzDB2GsYu9t0NvfrmZNw&e=" originalsrc="https://icecube.wisc.edu/news/collaboration/2023/06/icecube-webinar-2/" shash="HMSooFgh0QJppb9VnpD+N2YiC5awDDRLoLLoqFJvPgzckEc6oP8sC4dGK7ry6liPBxzJjHY5DXZyvqCpoHWXmlpwdiJb6Yv8mfi5ZT+7en15YCOtplnEODMUjSWWP1kZtN0ou+lJcJzBqusF3Gvw8oSehPhe7sYaQF317UdVISc=" target="_blank" rel="noopener noreferrer" data-auth="NotApplicable" data-linkindex="1" class="x_ContentPasted0">
https://icecube.wisc.edu/news/collaboration/2023/06/icecube-webinar-2/</a><br class="x_ContentPasted0">
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This is the large roughly cubic kilometer detector in the Antarctic ice at the South Pole. They are sensitive to very high energy neutrinos, among other things. I have heard no rumors about what they are going to say.</div>
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Marc</div>
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