LVAAS - THE LEHIGH VALLEY AMATEUR ASTRONOMICAL SOCIETY: Promoting, Facilitating and Teaching Astronomy Since 1957
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Monday, February 20 2017 @ 09:52 PM EST

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General Meeting: Open to the Public
Sunday, March 12, 2017 at 2 p.m.
Muhlenberg College, Trumbower Rm. 130 (Lithgow Science Auditorium)

Powerful Winds of Magnetic Massive Stars

Asif ud-Doula, PhD
Associate Professor of Physics, PSU Worthington Scranton

 

Massive stars (at least eight times as massive as the Sun) possess strong stellar winds driven by radiation. An increasing number of these massive stars have been confirmed to have global magnetic fields. Such magnetic fields can have significant influence on the dynamics of these stellar winds which are strongly ionized. Such interaction of the wind and magnetic field can generate copious amount of X-rays, they can spin the star down, they can also help form large scale disk-like structures. In this presentation I will discuss the nature of such radiatively-driven winds and how they interact with magnetic fields.

 

MegaMeet scheduled for May 26, 27, 28

Since both of our Pulpit Rock events were rained out in 2016, we decided to improve our odds this year by starting earlier. So our "Plan A" for MegaMeet this year is for the weekend of May 26! Watch this space and the Observer for more details.

 

 

 

 

 

 

 

 

The 2017 Astroimaging Calendar is available! Copies will be available at the meeting for $20.00 each.

Also, don't forget that it's time to renew your membership! You can renew at the General Meeting, or at any time by downloading the renewal form here and sending it in with your dues.

 

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—    LVAAS    —

THE LEHIGH VALLEY AMATEUR ASTRONOMICAL SOCIETY -- 620B East Rock Road -- Allentown, PA 18103 -- 610-797-3476 -- www.lvaas.org

WELCOME!

Founded in 1957, the Lehigh Valley Amateur Astronomical Society (LVAAS) is one of the oldest continuously-operating amateur astronomy organizations in the U.S. The mission of LVAAS is to promote the study of Astronomy and to maintain a meeting space, observatories, and a planetarium.

LVAAS operates two astronomy sites: The South Mountain site in Salisbury Township is the headquarters of the Society. It has a planetarium with a Spitz A3P projector, a 21 foot dome, meeting space, the Red Shift store, library, workshop space, and three observatories. The Pulpit Rock site near Hamburg is LVAAS's members-only dark sky site. At 1600 feet above sea level, the site features five observatories and a pad for member's scopes.

Members who receive training on the scopes may obtain keys to the observatories. LVAAS also maintains a rental "fleet" of telescopes that members may rent at low cost. Members also receive access to The Observer, our online newsletter, as well as reduced subscription prices to Sky and Telescope and Astronomy Magazine. If you want to learn more about astronomy and LVAAS, please join us at our next public star party.

 

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