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<div style="margin: 14pt 30pt;">Dear all,</div>
<div style="margin: 14pt 30pt;">We would like to make you aware of a talk on:</div>
<div style="margin: 14pt 30pt;">
<div style="margin: 0px;"><font face="wf_segoe-ui_normal,Segoe UI,Segoe WP,Tahoma,Arial,sans-serif,serif,EmojiFont" size="2" color="#212121"><span style="font-size: 15px;">"Time-Domain Approaches to Investigating the Tension in H0"</span></font></div>
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which will be held by Danny Goldstein from Caltech on Thursday May 16 at 13:15 in the KTH meeting room on the 5th floor. </div>
<div style="margin: 14pt 30pt;">For details see the forwarded message below.</div>
<div style="margin: 14pt 30pt;">Best regards,</div>
<div style="margin: 14pt 30pt;">Jens</div>
<div style="margin: 14pt 30pt;"><br>
</div>
<div style="margin: 14pt 30pt;">Begin forwarded message:</div>
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<div style="margin: 0px;"><b>From: </b>Andre Schneider <<a href="mailto:andre.schneider@astro.su.se" target="_blank" rel="noopener noreferrer">andre.schneider@astro.su.se</a>><br>
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<div style="margin: 0px;"><b>Subject: </b><b>[Okc-wp4] EO meeting Thu May 16 @ 13:15 KTH meeting room</b><br>
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<div style="margin: 0px;"><b>Date: </b>13 May 2019 at 14:04:46 CEST<br>
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<div style="margin: 0px;"><b>To: </b>"<a href="mailto:Okc-wp4@fysik.su.se" target="_blank" rel="noopener noreferrer">Okc-wp4@fysik.su.se</a>" <<a href="mailto:Okc-wp4@fysik.su.se" target="_blank" rel="noopener noreferrer">Okc-wp4@fysik.su.se</a>><br>
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Dear colleagues, </span></font></div>
<div style="margin-top: 0px; margin-bottom: 0px;"><font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" size="2"><span style="font-size: 16px;"><br>
</span></font></div>
<div style="margin-top: 0px; margin-bottom: 0px;"><font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" size="3" color="#212121"><span style="font-size: 12pt;">our next EO meeting will take place this Thursday May 16 at 13:15 in the KTH meeting room on
the 5th floor.</span></font><font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" size="3" color="#212121"><span style="font-size: 12pt;"> </span></font></div>
<br>
<div style="margin-top: 0px; margin-bottom: 0px;"> </div>
<div style="margin-top: 0px; margin-bottom: 0px;"><font face="wf_segoe-ui_normal,Segoe UI,Segoe WP,Tahoma,Arial,sans-serif,serif,EmojiFont" size="2" color="#212121"><span style="font-size: 15px;"><b>Danny Goldstein</b></span></font><font face="wf_segoe-ui_normal,Segoe UI,Segoe WP,Tahoma,Arial,sans-serif,serif,EmojiFont" size="2" color="#212121"><span style="font-size: 15px;"> </span></font><font face="wf_segoe-ui_normal,Segoe UI,Segoe WP,Tahoma,Arial,sans-serif,serif,EmojiFont" size="2" color="#212121"><span style="font-size: 15px;">from Caltech
will present us the following talk</span></font><br>
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<div style="margin-top: 0px; margin-bottom: 0px;"> </div>
<div><font face="wf_segoe-ui_normal,Segoe UI,Segoe WP,Tahoma,Arial,sans-serif,serif,EmojiFont" size="2" color="#212121"><span style="font-size: 15px;"><br>
</span></font></div>
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<div style="margin: 0px;"><font face="wf_segoe-ui_normal,Segoe UI,Segoe WP,Tahoma,Arial,sans-serif,serif,EmojiFont" size="2" color="#212121"><span style="font-size: 15px;">Title: Time-Domain Approaches to Investigating the Tension in H0</span></font></div>
<div style="margin: 0px;"><font face="wf_segoe-ui_normal,Segoe UI,Segoe WP,Tahoma,Arial,sans-serif,serif,EmojiFont" size="2" color="#212121"><span style="font-size: 15px;"><br>
</span></font></div>
<div style="margin: 0px;"><font face="wf_segoe-ui_normal,Segoe UI,Segoe WP,Tahoma,Arial,sans-serif,serif,EmojiFont" size="2" color="#212121"><span style="font-size: 15px;">Abstract: State-of-the-art local and primordial measurements of the Hubble constant (H0)
are currently in tension at the 4.4 sigma level. New physics and systematic errors have been invoked as potential explanations. I will discuss two new, independent techniques for measuring H0 from time-domain astronomy that can help distinguish between these
and other scenarios. The first is to use time delays from strongly gravitationally lensed supernovae to constrain H0 geometrically. The second is to construct a distance-redshift relation using electromagnetic counterparts to gravitational wave events. I will
describe experimental efforts that are currently underway to carry out both of these measurements, namely the Zwicky Transient Facility lensed supernova search and the Dark Energy Camera neutron star merger follow-up program. </span></font></div>
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<div style="margin-top: 0px; margin-bottom: 0px;"> </div>
<div style="margin-top: 0px; margin-bottom: 0px;"><br>
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<div style="margin-top: 0px; margin-bottom: 0px;"><font face="Calibri,Helvetica,sans-serif,EmojiFont,Apple Color Emoji,Segoe UI Emoji,NotoColorEmoji,Segoe UI Symbol,Android Emoji,EmojiSymbols" size="2"><span style="font-size: 16px;">See you there! </span></font><br>
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</span></font></div>
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<div style="margin-top: 0px; margin-bottom: 0px;"> </div>
<div style="margin-top: 0px; margin-bottom: 0px;"><font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" size="2"><span style="font-size: 16px;">---------------------------------</span></font></div>
<div style="margin-top: 0px; margin-bottom: 0px;"><font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" size="2"><span style="font-size: 16px;">André da Silva Schneider</span></font><font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" size="2"><span style="font-size: 16px;"><br>
</span></font></div>
<div style="margin-top: 0px; margin-bottom: 0px;"><font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" size="2"><span style="font-size: 10pt;">Department of Astronomy</span></font><font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" size="2"><span style="font-size: 16px;"><br>
</span></font></div>
<div style="margin-top: 0px; margin-bottom: 0px;"><font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" size="2"><span style="font-size: 10pt;">Stockholm University</span></font></div>
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<font face="Helvetica,serif,EmojiFont" size="1"><span style="font-size: 12px;">-------------------------------------------------</span></font><br>
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