Solar Talk - Monday 23rd November 19.30UT

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Re: Solar Talk - Monday 23rd November 19.30UT

Post by JochenM » Tue Nov 24, 2020 10:25 am

Watched it "live" yesterday.

Very interesting and well presented, Mark!


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Re: Solar Talk - Monday 23rd November 19.30UT

Post by p1taylor » Tue Nov 24, 2020 6:45 pm

I enjoyed it Mark, well done.

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Re: Solar Talk - Monday 23rd November 19.30UT

Post by Highbury Mark » Tue Nov 24, 2020 8:12 pm

Really excellent presentation Mark - passed in a flash because it was interesting and informative throughout - thanks.


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Re: Solar Talk - Monday 23rd November 19.30UT

Post by DeepSolar64 » Tue Nov 24, 2020 9:51 pm

Mark, have you a link to it on YouTube yet?


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Re: Solar Talk - Monday 23rd November 19.30UT

Post by marktownley » Tue Nov 24, 2020 9:56 pm

DeepSolar64 wrote:
Tue Nov 24, 2020 9:51 pm
Mark, have you a link to it on YouTube yet?
https://www.youtube.com/watch?v=9f8ULLN ... c6JAAE4dOA


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Re: Solar Talk - Monday 23rd November 19.30UT

Post by DeepSolar64 » Tue Nov 24, 2020 10:11 pm

Thank you Mark.


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Re: Solar Talk - Monday 23rd November 19.30UT

Post by robert » Wed Nov 25, 2020 11:04 am

Nice talk, covered lots of ground. Thanks!!
Robert


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Re: Solar Talk - Monday 23rd November 19.30UT

Post by dhkaiser » Wed Nov 25, 2020 4:50 pm

Thanks Mark, interesting theory with the northern and southern peaks of the solar cycle.


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Re: Solar Talk - Monday 23rd November 19.30UT

Post by Rusted » Wed Nov 25, 2020 8:16 pm

Great job Mark! Fascinating from beginning to end. Thanks. :bow


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Re: Solar Talk - Monday 23rd November 19.30UT

Post by DeepSolar64 » Thu Nov 26, 2020 6:23 am

Mark,
You did an outstanding presentation here! Wonderful! You should have been a teacher. I started out back in the late 1970's and early 80's drawing and notebook recording my white-light observations using 50mm and 60mm refractors and those little eyepiece solar filters and later projection. I would take an instamatic camera and photograph the images. I still have my old notebooks and the 60mm refractor! Living at 35 degrees north latitude I have seen an aurora only once in my life. Back around 1980-81. It was in the north and was not green but red!

If I understand radiation exposure right, cosmic rays are worse at minimum. Our atmosphere shrinks lowering protection against them and the sun is less active to " push them away " and it's heliosphere is smaller. Cosmic rays are LOWER during maximum but solar radiation is higher forcing planes to a lower altitude during CME events. Cosmic rays of course do not originate from the Sun but are from events far outside the solar system.

And I had no idea the sun had belts. That explains why we see the southern hemisphere coming alive now and it explains the double-peaks on the activity graphs.

I wish for more activity but certainly not a Carrington-Class event. I bet it would short out our computers, including the ones in our cars out too. And think, we would be hand driving our mounts, lol, I do that anyway, after the power went out. But that would be the least of our problems....

Thanks again Mark. Awesome presentation!!

James


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Re: Solar Talk - Monday 23rd November 19.30UT

Post by Montana » Thu Nov 26, 2020 6:34 pm

Interesting new data about the hemispheres and the odd and even solar cycles
https://arxiv.org/ftp/arxiv/papers/2011/2011.12559.pdf

Alexandra




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Re: Solar Talk - Monday 23rd November 19.30UT

Post by marktownley » Sat Nov 28, 2020 8:05 am

Thanks very much everyone. Here's a link to another paper on hemispherical asymmetry.

https://dro.dur.ac.uk/29586/2/29586.pdf?DDD21+


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Re: Solar Talk - Monday 23rd November 19.30UT

Post by Lowjiber » Sat Nov 28, 2020 1:24 pm

Mark, I just got the chance to watch your talk on YouTube. That was fantastic! Thank you very much.:)

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