The recording is available here: youtu.be/ehAWBUPGo_s
This paper was finally released from moderation purgatory last night, but @arxiv.bsky.social only allowed it to be posted to the general physics archive that almost nobody follows. arxiv.org/abs/2606.04927
I've been showing this plot in seminars for the past six months, and I finally decided to publish a research note about it (not yet on @arxiv.bsky.social, still stuck in moderation). Take a look: iopscience.iop.org/article/10.3...
👉 Tomorrow (May 6 at 2:00pm MDT) I'll give HAO a sneak preview of a talk that I'm presenting next week at Stanford "Stellar Evidence of a Collapsing Solar Dynamo" www2.hao.ucar.edu/stellar-evid...
When I wrote this "Quick Study" on Weakened Magnetic Braking for @physicstoday.bsky.social in 2018, we already had the physical picture largely correct – we just didn't have all of the evidence in hand to support it. Now we do. physicstoday.aip.org/quick-study/...
SNEAK PREVIEW: after the collapse of the global dynamo stalls main-sequence spin-down for billions of years, physical expansion on the subgiant branch finally allows stars to reach the transition to anti-solar DR (~1.1 Ro_crit), restoring the large-scale field and reviving magnetic braking!
"Nature is so rich you are unlikely to look carefully at anything without learning something new, particularly in unexplored territory... do something nobody thinks is interesting. Trust me: it will be." ~Ed Nather whitedwarf.org/education/ad...
I'll be visiting New Mexico later this week, giving an astronomy colloquium about what happens to stellar dynamos toward the end of main-sequence lifetimes. astro.nmsu.edu/events/collo...
It took 10 years to trace Weakened Magnetic Braking back to it's root cause (the collapse of the global stellar dynamo), but next week at #AAS247 you can hear me explain how we did it in less than 10 minutes! Thursday, January 8th at 10:10am in room 222C. submissions.mirasmart.com/AAS247/Itine...
Looking forward to giving the LASP seminar this afternoon, 1:00pm in SPSC-N100 and on zoom (preview of an astronomy colloquium next week at NMSU). lasp.colorado.edu?science-semi...
In 2007, Erika Bohm-Vitense published a provocative figure suggesting that the solar rotation period and activity cycle made the Sun an outlier compared to the trends observed for stars in the Mount W...
youtu.be
YouTube video by High Altitude Observatory HAO | NCAR
Old Sun-like stars observed by the Kepler Space Telescope spin faster than astronomers expected. Apparently, they experience a dramatic shift in their rotation and magnetism at about middle age.
