[Astro] [CAPT] Particle Cosmology and Gravity Seminar this week: Fraser Cowie

[Elisa Todarello (staff)]

Dear All,

                  We have a seminar this week. The details are provided below.

Kind regards,
Elisa
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Speaker: Fraser Cowie (Oxford)

Seminar date: November 25th , Tuesday, 1 pm UK time

Venue: Seminar Room A 113 (Cripps North Building, CAPT)

Title: How smooth is the radio sky?

Abstract: The radio synchrotron background (RSB) is a measurement of the total emission from the sky at radio wavelengths. Carefully calibrated measurements over the past decade have revealed that the level of this background is significantly higher than expected from known astrophysical sources such as diffuse galactic emission and discrete extragalactic point sources. Many exciting models, both astrophysical and those invoking beyond standard model physics, can explain an excess background but more measurements are needed to discern between different possibilities. We present the largest low-frequency image of the RSB to date taken with the LOFAR telescope and we use this exquisite dataset to measure the anisotropy of the radio sky at low frequencies. Combined with full pipeline simulations of some empirical models we can constrain what properties models must have to reproduce our observations of the radio sky.

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Link to join:

 https://teams.microsoft.com/l/meetup-join/19%3ameeting_OGM3OTk5NzQtZWEwZS00ZmUyLTk3MGUtZjFhY2M5OTU2MjI1%40thread.v2/0?context=%7b%22Tid%22%3a%2267bda7ee-fd80-41ef-ac91-358418290a1e%22%2c%22Oid%22%3a%22f3250584-4b5f-48fa-a897-08e77f2246b7%22%7d


List of upcoming Seminars:

Dec 2nd: Violetta Sagun (Southampton)
Dec 9th: James Alvey (Cambridge)

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