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<p>Hello</p>
<p>On Friday the 26th we have the next astronomy seminar with Jeff
Cooke (Swinburne University of Technology) at 10:30 via Zoom.</p>
<p><b>The Deeper, Wider, Faster program and the Keck Wide-Field
Imager</b>
</p>
<p>
In this talk, I will first discuss the Deeper, Wider, Faster (DWF)
program, an innovative all-wavelength program chasing the fastest
bursts in the Universe. Fast transients with millisecond-to-hours
durations are observed and predicted at all wavelengths, such as
fast radio bursts (FRBs), supernova shock breakouts, GRBs and
their afterglows, X-ray bursts, Type Ia supernova/companion star
collisions, kilonovae, blitzars, and other exotic events, with
most classes having no detections or a few serendipitous
observations to date. DWF coordinates over 80 radio through
gamma-ray telescopes and particle detectors located on every
continent and in space to simultaneously gather deep, wide-field,
fast-cadenced observations before, during, and after the fast
events before they quickly fade. DWF performs real-time (seconds)
data processing and transient identification to trigger
rapid-response spectroscopy and imaging on program-coordinated
8m-class optical, radio, and high-energy telescopes and DWF
coordinates later-time observations, as some fast transients are
associated with longer-duration events (e.g., supernova shock
breakouts). I will conclude by discussing the proposed Keck
Wide-Field Imager (KWFI), a UV-sensitive optical (3000-10000A)
imager that will be the most powerful wide-field imager in the
world for the foreseeable future. KWFI will progress fast
transient science, as well as nearly every other area of
astronomy, from the solar system to the high redshift Universe,
including radio, high-energy, and gravitational wave research. I
will describe how KWFI, with its extreme depths and blue
sensitivities (e.g., m ~ 28 in ~1-2 hrs) over wide fields, will
enable science that cannot be done on any other telescope,
including future 30m-class telescopes, and will provide deep
photometry essential for upcoming facilities, such as the E-ELT,
wide-field 10m-class spectrographs, gravitational wave detectors,
and the JWST, Roman, and Euclid space missions.</p>
<p>We are trying something new this year with leaving the Zoom call
open after the formal hour of the seminar is up to allow the
speaker, if they wish, to chat informally with anyone who is
interested.</p>
<p>Thanks<br>
<br>
Chris and Tine</p>
<p>Christopher Usher is inviting you to a scheduled Zoom meeting.
<br>
<br>
Topic: Astronomy Seminar - Jeff Cooke
<br>
Time: Nov 26, 2021 10:30 AM Stockholm
<br>
<br>
Join Zoom Meeting
<br>
<a class="moz-txt-link-freetext" href="https://stockholmuniversity.zoom.us/j/63061726531?pwd=WWtYVVRwR3ZtZFhGR3Foa1pBWnE1QT09">https://stockholmuniversity.zoom.us/j/63061726531?pwd=WWtYVVRwR3ZtZFhGR3Foa1pBWnE1QT09</a>
<br>
<br>
Meeting ID: 630 6172 6531
<br>
Passcode: Ye29K5r85t
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