Bay Astro - Week of 09/26/2022 and Beyond

26 Sep 2022 4:14 PM | Scott Miller (Administrator)

Monday, 09/26/22
11:00 AM - 12:00 PM
In-person

Varian Physics Building
382 Via Pueblo Mall
Room 355
Stanford, CA 94305

Probes of galaxy interactions: from the Magellanic Stream to lensed supernovae

We have been working on a variety of projects, which are generally connected by trying to understand the distributions of dark matter. First, we used hydrodynamic simulations of the Magellanic Stream to estimate the mass of the MW potential. The simulated streams are sensitive to the MW potential because the potential determines the orbits of the satellites. The orbits determine the strength of the tidal interactions and ram pressure stripping in the simulations that cause stream formation. We estimated the total mass of the potential by matching the simulated stream lengths to the observations across simulations with different MW potentials. Currently, we are working on combining local acceleration measurements with constraints from stellar streams to model the MW potential. There are now local direct acceleration measurements from binary pulsar systems, which can calibrate potential models while fitting to dynamical probes of the potential. Now I am focused on using gravitationally lensed supernovae to measure accurate time delays in strong lensing systems. We run simulations of lensed supernovae in systems with gravitational microlensing, preparing to avoid contamination from microlensing in these systems. We model the magnification patterns caused by microlensing and convolve them with supernova models to simulate spectra from microlensing systems. This produces spectra with different microlensing realizations, allowing us to study the effects of microlensing on the spectra. Accurate time delay measurements can put a strong constraint on the Hubble constant and to search for dark matter substructure along the line of sight.

Speaker: Peter Craig, Rochester Institute of Technology

Website: https://kipac.stanford.edu/events/probes-galaxy-interactions-magellanic-stream-lensed-supernovae

Cost:  Free

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Monday, 09/26/22
02:30 PM - 05:00 PM
Livestream

 SETI Institute

DART: Can We Change an Asteroid’s Course and Save Planet Earth?

NASA’s Double Asteroid Redirection Test, or DART, is the world’s first full-scale planetary defense test, demonstrating one method of asteroid deflection technology. True to its name, DART is a focused mission to prove whether a spacecraft can autonomously navigate to a target asteroid, intentionally collide with it and protect Earth from a potential asteroid impact.

The mission target, which poses no threat to Earth, is the asteroid moonlet Dimorphos (Greek for “two forms”), which orbits a larger asteroid named Didymos (Greek for “twin”).

Join SETI Institute Senior Astronomer Franck Marchis and Beth Johnson for a special SETI Talks with scientists involved in the mission or planetary defense at large. We will follow the spacecraft as it approaches its target, learn about the navigation system from JPL and APL engineers and scientists, see how astronomers around the world will watch the impact using other facilities and discuss why it matters. Finally, we will collaborate with Unistellar citizen astronomers live from Reunion Island to watch the impact and see if any aftermath is detected.

Our guests will include:

    • Dr. Larry Denneau, ATLAS Co-PI and Senior Software Engineer at the Institute for Astronomy, University of Hawai'i
    • Dr. Julie Bellerose, DART Navigation Team Chief at NASA Jet Propulsion Laboratory
    • Dr. Amanda Sickafoose, Planetary Science Institute
    • Dr. Nicolas Erasmus, Planetary Science Institute
    • Dr. Michael Busch, SETI Institute research scientist
    • Dr. Andrew Chen, chief scientist at Johns Hopkins University Applied Physics Laboratory
    • Dr. Jian-Yang Li, Planetary Science Institute
    • Dr. Ryan Lambert, SETI Institute
    • Patrice Huet, Unistellar Network
    • Dr. Joe Masiero, Caltech/IPAC
Schedule:

2:30-2:40pm PDT

    • Welcome and introduction
2:40-3:00pm PDT

    • Larry Denneau " Introduction to near-Earth asteroids and ATLAS
    • Julie Bellerose - DART navigation, sequence of events
3:00pm-3:20pm PDT

    • Alex Meyer (Colorado University) - post-impact dynamics: what can we expect.
    • Amanda Sickafoose & Nic Erasmus (from SA)
3:20-3:40pm PDT

    • Michael Busch - What do we know from RADAR ops?
    • Andy Cheng - “Why Dart?” and reveal of first image of Dimorphos
3:40-4:00pm PDT

    • Jian-Yang Li - HST observations of the DART impact, as well as other planned observations of the ejecta
    • Ryan Lambert
4:00-4:20pm PDT

    • Impact live (NASA feed + Reunion Island feed) - Impact!
    • Patrice Huet and more observers in Reunion Island
    • Joe Masiero - NEOWISE and NEO Surveyor
4:20-4:40pm PDT

    • Wrap up with all scientists

Website:  https://www.seti.org/event/dart-can-we-change-asteroids-course-and-save-planet-earth

Register:  https://www.eventbrite.com/e/dart-can-we-change-an-asteroids-course-and-save-planet-earth-tickets-419097049557

Cost:  Free

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Monday, 09/26/22
04:00 PM - 05:00 PM
In-person

Recorded at:  https://www.youtube.com/playlist?list=PLFjPz_OzQyjOAnkSx5MKQtz0OpummvjH9

Sonoma State University - What Physicists Do
1801 E. Cotati Ave.
Darwin Hall, Room 103
Rohnert Park, CA 94928

Observing Dark Matter in the Wild
Speaker: David Wittman, UC Davis

Website: http://phys-astro.sonoma.edu/public-events/what-physicists-do/2022-fall/observing-dark-matter-wild

Cost:  Free

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Tues. Sept. 27

The launch of the Artiemis ! / SLS rocket by NASA has been postponed again this time by tropical storm Ian. The next launch window is somewhere around October 2-3.

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Tuesday, 09/27/22  7:00 PM
In-person and Livestream

Dinkelspiel Auditorium
Stanford University
Stanford, CA 94305
(Near the Tressider Student Union in the Music school)

How the Universe Ends

The Big Bang theory tells the story of the beginning of the Universe, our cosmic home for the last 13.8 billion years. But how does the story end? In this lecture, Prof. Mack will share what modern astrophysics tells us about the ultimate fate of the cosmos, and what the catastrophic destruction of all reality would look like to anyone still around to see it.

Attend in person or online.  Register here.

https://www.eventbrite.com/e/astronomy-lecture-how-the-universe-ends-w-book-raffle-registration-408164851057

Website: https://kipac.stanford.edu/events/how-universe-ends

Cost:  Free

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Friday, 09/30/22  7PM
In-person

Telescope Makers Workshop
Chabot Space and Science Center
10000 Skyline Boulevard
Oakland, CA 94619-2450

The Chabot Telescope Maker's workshop reopens! Chabot's TMW is one of only a handful of regularly scheduled telescope making workshops in the U.S., and probably the world; it meets every Friday evening throughout the year, except Memorial Day weekend. It has been in operation since December of 1930, founded by Franklin B. Wright, and is currently run by Eastbay Astronomical Society member Rich Ozer, with help from other EAS members, Dave Barosso, Barry Leska, and others. The price of admission is FREE. All you have to do is show up, buy a mirror blank and a "tool" (typically around $100 - $200 depending on the size of the mirror) and start "pushin' glass!" We supply you with instruction, the various grits you'll need to first grind, and then polish and figure your mirror, and all the testing equipment needed. With a small bit of luck, you could wind up with a telescope that costs 1/3 or 1/4 the cost of a store-bought telescope, that is yet optically superior! It does take time - depending on how much time you put in on it, and other factors, it could take a few months.. But, it's a fun project, great for kids, and at the end you get a great telescope!

Enter from the main loading dock behind the main building.

Please be prepared with proof of vaccination and a mask. These are
Chabot Rules, which we always must adhere to.

If you have a project, bring it with you so we can assess next steps.
You can also bring any other equipment or literature you may have
questions about.

For more information call or email Richard Ozer at rrichozer1@... or phone (510) 406-1914.

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Friday, 09/30/22 and Saturday, 10/01/22
07:30 PM - 10:00 PM--Free telescope viewings are back!
In-person

Chabot Space and Science Center
10000 Skyline Blvd
Oakland, CA 94619

Free Telescope Viewings

Join Chabot astronomers on the Observatory Deck for a free telescope viewing! Weather permitting, this is a chance to explore stars, planets and more through Chabot’s historic telescopes. Chabot’s three large historic telescopes offer a unique way to experience the awe and wonder of the Universe. Our observatory deck offers breathtaking views 1,500 feet above the Bay. Three observatory domes house the Center’s 8-inch (Leah, 1883) and 20-inch (Rachel, 1916) refracting telescopes, along with a 36-inch reflecting telescope (Nellie, 2003).

Are the skies clear for viewing tonight? Viewing can be impacted by rain, clouds, humidity and other weather conditions. Conditions can be unique to Chabot because of its unique location in Joaquin Miller Park. Before your visit, check out the Weather Station to see the current conditions at Chabot.

https://chabotspace.org/weather-station/

Website: https://chabotspace.org/events/events-listing/

Cost:  Free

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Saturday, 10/01/22
07:30 PM - 08:30 PM
Livestream

Mt. Tam Astronomy

An Astronomical Perspective on Globular Clusters, Planet Earth, and the Climate Crisis - Livestream

evolution of stars for more than 100 years. I will describe the role that binary stars play in their fascinating internal dynamics and provide examples of how a cluster's binaries can be revealed using space-based observatories. The unusual perspective that astronomical studies such as these provide on our home planet led to the founding in 2019 of an organization aimed at harnessing this perspective to help combat the climate crisis. The author will briefly describe the goals and activities of Astronomers for Planet Earth, which now comprises 1400 astronomy educators, amateurs, students, and researchers worldwide.

Speaker: Adrianna Cool, San Francisco State University

See weblink for Zoom information

Website: https://www.mttamastronomy.org/calendar

Zoom:  https://cuboulder.zoom.us/j/9556618485#success

YouTube:  https://www.youtube.com/mttamastronomy

Cost:  Free

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Saturday, 10/01/22
07:30 PM - 09:30 PM
In-person

College of San Mateo Bldg 36
1700 W Hillsdale Rd
San Mateo, CA 94402

Jazz Under the Stars

Jazz Under the Stars is amonthly public stargazing event! Join us on the 4th floor planetarium for a night of smooth jazz, bright stars, and a lot of fun! We play our jazz from CSM's own KCSM 91.1. Founded in 1964, KCSM has grown to become one of the top 35 most listened to non-commercial stations in the US. With their help, the Astronomy department at CSM opens its observatory doors and balcony, for a night of science and fun! We operate for public viewing four 8” dobsonian telescopes, prefect for viewing the planets Venus, Mars, Jupiter and Saturn. We also have a 140mm refractor, with which we view the craters on the moon. Finally, our 8’ schmidt-cassegrain is for our deep sky needs. It can peer deep into globular clusters, and nebulae! Our astronomers will also be available for questions and conversation, which you wouldn’t get anywhere else! Feel free to ask us your questions about the cosmos. Occasionally we even have the chance to image galaxies! Don't miss out, join us at our next Jazz Under the Stars!!

See weblink for additional details

Website: https://collegeofsanmateo.edu/astronomy/observatory.asp

Cost:  Free

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Sunday-Monday Oct. 2-3

Somewhere around these dates, NASA may make another attempt to launch the Artemis 1 / SLS rocket. Will see how it goes.

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Monday, 10/03/22
07:30 PM - 09:00 PM
In-person

California Academy of Sciences
55 Music Concourse Dr.
San Francisco, CA 94118

Science, Exploration and the Human Experience

NASA's VIPER lunar mission (Volatiles Investigating Polar Exploration Rover) is a mobile robot that will go to the South Pole of the Moon to get a close-up view of the location and concentration of water ice that could eventually be harvested to sustain human exploration on the Moon, Mars - and beyond. Managed out of NASA's Ames Research Center in Silicon Valley, VIPER represents the first resource mapping mission on another celestial body and presents a unique operational paradigm within the history of robotic spaceflight.

Speaker: Darlene Lim, NASA Ames

Website: https://www.calacademy.org/events/benjamin-dean-astronomy-lectures/science-exploration-and-the-human-experience

Cost:  $15 General, $12 Members & Seniors

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Friday, 10/07/22  12:00 PM
In-person

Earth and Marine Sciences Building
UC Santa Cruz
Room A340
Santa Cruz, CA 95064

Making and breaking planets and moons: big simulations and giant impacts
Speaker: Jacob Kegerreis, NASA Ames

Website: https://eps.ucsc.edu/news-events/igpp-seminar/fall-2022.html

Cost:  Free

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Friday, 10/07/22
06:00 PM - 10:00 PM
In-person

Chabot Space and Science Center
10000 Skyline Blvd
Oakland, CA 94619

First Friday- Science Fiction

Science fiction writers, filmmakers, and artists have inspired us to think beyond the Earth and work towards traveling to the stars, and to pursue space exploration. Explore hands-on activities and learn about synthetic biology, learn all about liquid nitrogen, and what happens to objects in ultra-low temperatures. Make a sci-fi costume and take a space selfie! Listen to music and see costumed Star Wars characters out and about the Center. Enjoy a special interactive presentation of Space in your Face, that will explore the probability of alien characters and design your own alien based on special space conditions - suitable for all ages. Watch kitschy sci-fi films with host Lord Blood Rah and unpack how sci-fi became a reality with a presentation from Ron Hipschman. Beer, wine, music, and food are available.

Featured Presentation with Andy Weir:   

Take a deep dive into our look into how science fiction influences science and plan to see our live virtual conversation (limited capacity) with The Martian and Project Hail Mary author Andy Weir in conversation with Dr. Jennifer Frazier.

Website: https://chabotspace.org/calendar/first-friday-2/

Cost:  $15 General, $10 Youth/Seniors, $5

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Friday, 10/07/22  7:00 PM
Attend in person or online via Zoom.

San Mateo Co. Astronomical Society
College of San Mateo Bldg 36
1700 W Hillsdale Rd
San Mateo, CA 94402

Discovering Wonders of The Night Sky

Star Chaserz is a non-profit organization dedicated to promote public awareness, education, appreciation, and preservation of one our most precious, wonderful and often overlooked natural resources - the night sky. To achieve this goal they offer both live and virtual events through their website (Starchaserz.org). Live events include scheduled star parties and public; virtual events include live video broadcasts through telescopes in remote mobile and stationary observatories located in dark sky areas of Northern California. Star Chaserz CEO Norman Nasise will present to us on the topics of his mobile observatory (once featured in Sky & Telescope), his recently-completed Red Bluff observatory, and his new public outreach initiative.

Attend in person or online via Zoom.

Website: http://www.smcasastro.com/meetings.html

Cost:  Free

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Friday, 10/07/22  7PM
In-person

Telescope Makers Workshop
Chabot Space and Science Center
10000 Skyline Boulevard
Oakland, CA 94619-2450

See description from 09/30/2022 above.

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Friday, 10/07/22 and Saturday, 10/08/22
07:30 PM - 10:00 PM--Free telescope viewings are back!
In-person

Chabot Space and Science Center
10000 Skyline Blvd
Oakland, CA 94619

See description from 09/30/2022 above.

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