Calendar

Apr
15
Mon
ASTR 616 – Galaxies II
Apr 15 @ 10:30 am – 11:45 am
Pizza lunch: Inclusive Astronomy
Apr 15 @ 12:30 pm – 1:30 pm
Pizza lunch: Inclusive Astronomy
PDS Atmospheres Node meeting
Apr 15 @ 3:30 pm – 4:30 pm
PDS Atmospheres Node meeting @ AY 119

Detailed Node Meeting Schedule:

1/07: ELSA & Node
1/14: ELSA
1/21: nothing – MLK holiday
1/28: Node
2/04: ELSA
2/11: Node
2/18: ELSA
2/25: Node
3/04: ELSA
3/11: Node
3/18: ELSA (but Lynn not here, LPSC)
3/25: nothing – Spring Break
4/01: Node
4/08: ELSA
4/15: Node
4/22: ELSA
4/29: Node
5/06: nothing – Final Exams week
5/13: ELSA

Apr
16
Tue
ASTR 610 – Radio Astronomy
Apr 16 @ 10:30 am – 11:45 am
ASTR 506 – Stellar Dynamics and Hydrodynamics
Apr 16 @ 12:00 pm – 1:15 pm
Apr
17
Wed
ASTR 616 – Galaxies II
Apr 17 @ 10:30 am – 11:45 am
Astro-ph Discussion
Apr 17 @ 1:30 pm – 2:00 pm
Astro-ph Discussion @ AY119
Special Colloquium: Amanda Wilber (Host: Moire Prescott)
Apr 17 @ 3:15 pm – 4:15 pm
Special Colloquium: Amanda Wilber (Host: Moire Prescott) @ AY 119

Searching for diffuse radio emission in merging galaxy clusters with LOFAR

Amanda Wilber, Universität Hamburg

Galaxy cluster mergers are powerful drivers of turbulence and shocks, which can accelerate cosmic-ray electrons within the magnetic field of the intracluster medium (ICM) to generate Megaparsec-sized radio structures. Actively merging clusters are excellent astrophysical laboratories for studying the nature of magnetic fields and the physics of particle acceleration. Questions still remain in identifying the source of cosmic-ray electrons that appear to fill the ICM so uniformly, and in determining the origin and amplification mechanisms of cluster magnetic fields. With its high-resolution, extended coverage, and sensitivity to radio emission with low surface brightness, the LOw Frequency ARray (LOFAR) Two-metre Sky Survey (LoTSS) gives us an unparalleled opportunity to hunt for diffuse radio sources in distant galaxy clusters. In this talk I present the results of LoTSS observations which reveal never-before-seen diffuse radio emission in the merging galaxy clusters Abell 1132 and Abell 1314.

Apr
18
Thu
ASTR 610 – Radio Astronomy
Apr 18 @ 10:30 am – 11:45 am
ASTR 506 – Stellar Dynamics and Hydrodynamics
Apr 18 @ 12:00 pm – 1:15 pm