SETI public: FW: AstroAlert: Possible Strong Sunspot Complex to Rotate into View Soon

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>From: Cary Oler <oler_at_solar.spacew.com>
>To: sun-earth_at_SkyandTelescope.com
>Subject: AstroAlert: Possible Strong Sunspot Complex to Rotate into View
>Soon
>Date: Tue, 26 Jul 2005 11:36:13 +0000 (GMT)
>
>=================================================================
>This Is SKY & TELESCOPE's AstroAlert for Sun-Earth Interactions
>=================================================================
>
>A s t r o A l e r t
>
>26 July 2005
>
>Solar Terrestrial Dispatch
>www.spacew.com
>
>
>POSSIBLE STRONG SUNSPOT COMPLEX TO ROTATE INTO VIEW SOON
>
> Roughly two weeks ago, an active region known as Region 10786 (or
>simply
>Region 786) increased in complexity as it approached the western limb of
>the
>Sun. As it rotated out of view behind the western limb, it spawned a
>powerful
>X-class solar flare and a fast coronal mass ejection. The trajectory of the
>ejected mass took the bulk of the space weather disturbance away from the
>Earth. During the last two weeks, this active region has been rotating from
>the western limb, behind the sun and back toward the eastern limb. In the
>process, it has been blamed for producing numerous strong coronal mass
>ejections that originated from behind the Sun - supposedly related to
>energetic solar flare activity.
>
> Old Region 786 is due to return to the eastern solar limb and rotate
>back into view during the next 72 hours (it will be assigned a new number
>when it returns). There is excitement concerning its imminent return
>because
>of the potential volatility associated with this region. If the region
>retains its volatility, it has the potential to be the source of several
>additional major solar flares during the next two weeks. Approximately one
>week from now, it should be in a fairly good position for producing
>Earthward-directed coronal mass ejections. As a result, aurora observers
>should be aware of the increased risk for auroral activity (northern
>lights)
>during the next two weeks. Much more will be known once the sunspot complex
>rotates into view and presents itself for material scrutiny during the next
>3
>to 5 days.
>
> As the region rotates into view, solar observers should monitor the
>eastern limb for signs of activity. Volatile active regions are often
>associated with active prominences, strong surging and sometimes powerful
>sprays of mass outward. Such observations require hydrogen-alpha solar
>filters to be attached to telescopic equipment. For those who do not have
>such equipment, near-realtime views from various professional solar
>observatories can be seen on-line by visiting: www.spacew.com/sunnow.
>
>
>** End of AstroAlert **
>==================================================================
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>==================================================================

• Previous message: LARRY KLAES: "SETI public: Imaging Earth-like planets with Extremely Large Telescopes"

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