BayAstro – Events of Week of 05/25/2020 and Beyond

The BayAstro group publishes announcements of interesting events related to astronomy and aerospace in the San Francisco Bay Area. This can include events such as astronomy and interesting physical science lectures, club meetings, star parties, air shows and other events of interest mostly to amateur astronomers and science enthusiasts. Many thanks to Ken Lum, who created this event listing.
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Due to concerns about the spread of the Coronavirus or COVID-19 virus, some events have been or may be cancelled. Many venues will be closed to the end of March and some, perhaps, into April. Other events may offer online links and connections. To check on the status of a given event, check their website for updates.
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Tuesday, 05/26/20
11:00 AM – 12:00 PM

Kavli Institute for Particle Astrophysics
https://stanford.zoom.us/j/550904854
password: kipac

Jet structure and variability of TeV high-frequency peaked blazars, towards a scenario of successive recollimation shocks – Livestream

Most of the TeV high-frequency-peaked BL Lacs (HBLs) show stationary orslow motions of their VLBI radio-knots, in stark contrast with their fast variability. This problem, known as “the bulk Lorentz factor crisis,” can be resolved if we consider that these strings of knots are successive recollimation shocks in their jets. Successive shocks predict that a unique pattern of the non-thermal emission variability should appear after each strong flare. Focusing on the well known HBL Mrk 421 and using the 13-year long X-ray dataset from the Swift X-ray Telescope, we have found evidence of such a distinct pattern with a statistical significance of more than 3 standard deviations compared to variability from stochastic fluctuations. I present how this pattern can be used in an innovative way to unveil the physical properties of the Mrk 421 jet, such as the apparent flow speed, the size of jet perturbations, and the jet beaming parameters. Finally, I discuss the possibility of multiple-shocks to re-accelerate particles in jets, and the ongoing works extending this study with MHD simulations and for other wavelengths.
Speaker: Olivier Hervet, UC Santa Cruz
See weblink for Zoom information.

Website: https://kipac.stanford.edu/events/jet-structure-and-variability-tev-high-frequency-peaked-blazars-towards-scenario-successive

Cost: Free

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Friday, 05/29/20
10:30 AM – 11:30 AM

Kavli Institute for Particle Astrophysics
Zoom: https://stanford.zoom.us/j/550904854
Password: kipac

Velocity Dispersions of Massive Quiescent Galaxies from Weak Lensing and Spectroscopy – Livestream

Speaker; Yousuke Utsumi, KIPAK

Website: https://kipac.stanford.edu/events/velocity-dispersions-massive-quiescent-galaxies-weak-lensing-and-spectroscopy

Cost: Free

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Friday, 05/29/20
08:00 PM – 09:00 PM

Chabot Space and Science Center

Star Stories: Learn the mythology behind the constellations! – Livestream

Join us on Facebook Live and listen to Doug Olsen, expert stargazer and storyteller, explain the mythology behind the constellations. He will tell ancient stories from the night sky as seen throughout history and look for planets and other clues to help orient you to the night’s sky.

See weblink for connection information

Website: https://chabotspace.org/calendar/star-stories-2/

Cost: Free

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Saturday, 05/30/20
09:30 PM – 11:00 PM

Chabot Space and Science Center

Free Telescope Viewing – Livestream

Join our resident astronomers on Facebook Live every Saturday evening live from Chabot’s Observation deck! Each week, our astronomers will guide us through spectacular night sky viewing through Nellie, Chabot‘s most powerful telescope. Weather permitting we will be able to view objects live through the telescopes and our astronomers will be available for an open forum for all of your most pressing astronomy questions.

Listening to feedback from our community, the full recordings of all live events will also be released on YouTube. Watch them on the Chabot Space & Science Center YouTube channel within one week of when the event happens on Facebook Live.

See weblink for Facebook link.

Website: https://chabotspace.org/calendar/free-telescope-viewings/2020-05-16/

Cost: Free

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Tuesday, 06/02/20
07:00 PM – 08:30 PM

Kepler’s Books

Where Jeff Bezos’ Great Grand-Daughter Will Go for Her Honeymoon: The Top Tourist Sights of the Solar System – Livestream

We will explore the most intriguing future “tourist destinations” among the planets and moons in our cosmic neighborhood. Our stops will include the 4,000-mile lava channel on Venus, the towering Mount Olympus volcano on Mars (three times the height of Mount Everest), the awesome Verona Cliffs on the moon Miranda (which are the tallest “lover’s leap” in the solar system), the recently discovered salt-water steam geysers on Saturn’s intriguing moon Enceladus (nicknamed “Cold Faithful.”). We’ll finish with the latest images of the eerie vistas on Pluto.

The talk is free (but you need to RSVP to reserve a place) and will be illustrated with the latest color images from the space probes that explore the planets.

Speaker: Andrew Fraknoi retired in 2017 as the Chair of the Astronomy Department at Foothill College, and now teaches non-credit astronomy courses for older adults at The Fromm Institute at the University of San Francisco and the OLLI program at SF State. See: http://fraknoi.com for more information.

RSVP below:
Website: https://www.keplers.org/upcoming-events-internal/2020/6/2/visit-the-top-tourist-sights-of-the-solar-system-with-andrew-fraknoi

Cost: Free

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Saturday, 06/06/20 7:30 PM

East Bay Astronomical Society
https://www.facebook.com/EastbayAstroSociety/live

Illuminating Dark Matter – Livestream

Dark matter is the cosmic parent of all vast structures in the night sky, including our own Milky Way galaxy. Yet we know so very little about this mysterious stuff that constitutes 85%(!) of the material universe. We don’t know what it’s made of, we don’t know where it came from, and we don’t know if there’s any way to “see” it.

In the first half of the talk, Robert will outline concrete things we do know about dark matter and how we’ve come to know them. He will start with historically significant evidence for dark matter and move on to more recent observations and simulations. All of this evidence will be astronomical or cosmological in nature with beautiful accompanying images and simulations.

In the second half, he will discuss the three complementary and distinct ways in which physicists and astronomers are trying to answer: what is dark matter? These include directly detecting dark matter in giant underground experiments, producing it at huge particle accelerators, and searching for its possible electromagnetic signals in telescopes. He will cover current, state-of- the-art efforts in all three directions, underlining the hope of this generation of scientists to soon discover this profoundly important but elusive stuff.

Speaker: Robert McGehee, UC Berkeley

See weblink for connection information

Website: http://eastbayastro.org/events/

Cost: Free

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Saturday, 06/06/20
07:45 PM – 09:45 PM

San Jose Astronomical Society
See weblink and register to obtain connection information

Fantasy Flights to the Moon – Livestream

This talk is in part based on the same section in my new major lunar observers handbook, Luna Cognita. The 3-volume set is scheduled to be published by Springer before the end of this year. Harrison Schmitt of Apollo 17 wrote the Introduction. The book is available on Amazon right now for pre-publication orders.

Speaker: Bob Garfinkle, FRAS

Website: https://www.meetup.com/SJ-Astronomy/events/270825931/

Cost: Free

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Saturday, 06/06/20
09:30 PM – 11:00 PM

Other Dates For This Event:
• Saturday, 06/06/20
• Saturday, 06/13/20
• Saturday, 06/20/20
• Saturday, 06/27/20

Chabot Space and Science Center

Virtual Telescope Viewing – Livestream

Join our resident astronomers on Facebook Live every Saturday evening live from Chabot’s Observation deck! Each week, our astronomers will guide us through spectacular night sky viewing through Nellie, Chabot‘s most powerful telescope. Weather permitting we will be able to view objects live through the telescopes and our astronomers will be available for an open forum for all of your most pressing astronomy questions.

Streaming at Chabot’s Facebook Live page. See weblink for info.

Website: https://chabotspace.org/calendar/free-telescope-viewings/2020-06-06/

Cost: Free

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