Calendar

Sep
8
Fri
Colloquium: Travis Metcalfe (Host: Jason Jackiewicz)
Sep 8 @ 3:15 pm – 4:15 pm
Colloquium: Travis Metcalfe (Host: Jason Jackiewicz) @ BX102

The Magnetic Mid-life Crisis of the Sun

Dr. Travis Metcalfe, Space Sciences Institute

After decades of effort, the solar activity cycle is exceptionally well characterized but it remains poorly understood. Pioneering work at the Mount Wilson Observatory demonstrated that other sun-like stars also show regular activity cycles, and suggested two possible relationships between the rotation rate and the length of the cycle. Neither of these relationships correctly describe the properties of the Sun, a peculiarity that demands explanation. Recent discoveries have started to shed light on this issue, suggesting that the Sun’s rotation rate and magnetic field are currently in a transitional phase that occurs in all middle-aged stars. We have recently identified the manifestation of this magnetic transition in the best available data on stellar cycles. The results suggest that the solar cycle may be growing longer on stellar evolutionary timescales, and that the cycle might disappear sometime in the next 0.8-2.4 Gyr. Future tests of this hypothesis will come from ground-based activity monitoring of Kepler targets that span the magnetic transition, and from asteroseismology with the TESS mission to determine precise masses and ages for bright stars with known cycles.

Aug
21
Wed
ASTR 535 – Observational Techniques I
Aug 21 @ 10:30 am – 11:45 am
Aug
22
Thu
ASTR 503 – Astrophysics
Aug 22 @ 10:30 am – 11:45 am
ASTR 565 – Stellar Interiors
Aug 22 @ 12:00 pm – 1:15 pm
Aug
23
Fri
Colloquium: Safe Zone Training (Host: Inclusive Astronomy Group)
Aug 23 @ 3:15 pm – 4:15 pm
Colloquium: Safe Zone Training (Host: Inclusive Astronomy Group) @ BX102

Safe Zone Training

Dr. Zooey Sophia Pook, NMSU

The SafeZone Training was established to educate and train students, faculty, and staff on how to provide safe and affirming support to members of the gay, lesbian, bisexual, transgender, and questioning community.

Aug
26
Mon
ASTR 535 – Observational Techniques I
Aug 26 @ 10:30 am – 11:45 am
Aug
27
Tue
ASTR 503 – Astrophysics
Aug 27 @ 10:30 am – 11:45 am
ASTR 565 – Stellar Interiors
Aug 27 @ 12:00 pm – 1:15 pm
Aug
28
Wed
ASTR 535 – Observational Techniques I
Aug 28 @ 10:30 am – 11:45 am
Aug
29
Thu
ASTR 503 – Astrophysics
Aug 29 @ 10:30 am – 11:45 am