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Monday Science Seminar
Monday Science Seminar w/ Dr. Robert Benjamin (University of Wisconsin - Whitewater)
Date: Monday, January 25th
Time: 12:00 pm
Place: https://uwmadison.zoom.us/j/96822123897?pwd=Z0ZESm1CNFRkUTVEMEIxM2RuN3h0UT09
Speaker: Dr. Robert Benjamin, University of Wisconsin - Whitewater
Abstract: “A Thirty Degree Ionized Circular Arc Around the Big Dipper…and Other Surprises”

Abstract: I describe the discovery of a faint (1 Rayleigh) thirty-degree circular arc of ionized gas centered on the handle of the Big Dipper: the Ursa Major Arc. The arc subtends one radian of a circle of angular diameter 60 degrees, is detected in both H-alpha and diffuse ultraviolet emission and is one of the most unusual objects in the sky. I compare this object to other recently discovered large angular size supernova remnants and describe the significance of these objects. If time allows, I will share some other recent discoveries of ionized gas structures in the Milky Way.
Host: Snezana Stanimirovic & Melinda Soares-Furtado
Presentation: Monday_Science_Seminar.pdf
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