April 30, 2019

Contact Information: dmarrone@email.arizona.edu

Title: The Black Hole Shadow in M87

Abstract: The Event Horizon Telescope (EHT) is an international collaboration to observe black holes at horizon-scale resolution. The EHT uses the technique of very long baseline interferometry (VLBI) and submillimeter telescopes all over the globe to perform VLBI experiments at 1mm wavelength, where we expect to resolve the event horizons of two targets, M87* and SgrA*. In 2017, the EHT performed its first experiment, using eight observatories at six geographic locations. In this talk I will report on the first results from that experiment, the image of the nuclear black hole in M87. From these data we have improved our understanding of this source, measured its mass, and provided a new test of General Relativity. I will also describe the path to these results and the next steps for this project.

Visit Schedule:

Tuesday (30 Apr 2019):

10:15 a.m.: Coffee / Talk Prep
11:00 a.m.: Colloquium
12:15 p.m.: Bahcall Lunch
2:00 p.m.: Eve Ostriker (Peyton 136)
2:30 p.m.: Hiroki Nagakura (Peyton 132)
3:00 p.m.: Gaspar Bakos (Peyton 133)
3:30 p.m.: Tea with grad students
4:00 p.m.: Jim Stone (Peyton 113)
4:30 p.m.: Evan Schneider (Peyton 107)
5:00 p.m.: Lyman, will meet in Peyton.
5:30 p.m.: Bruce Draine (Peyton 108)
6:00 p.m.: DINNER WITH HOST - meet in Grand Central

Dinner Sign-up (students have priority; 8 MAX) - add your name here:

1. Speaker: Dan Marrone

2. Faculty host: Jenny Greene

3. Postdoc host: Silvio Sergio Cerri

4. Lachlan Lancaster

5. Gaspar Bakos

6. Evan Schneider

7. Matthew Kunz

8. Brant Robertson

NO MORE THAN 8 PEOPLE (otherwise it is very difficult to properly interact with the speaker)