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Solar Talk - Monday 23rd November 19.30UT

Posted: Fri Nov 20, 2020 6:47 am
by marktownley
Hi All,

I will be doing my talk 'Cycles on the Sun: Space Weather and the Earth Sun Environment' on monday evening at 7.30pm at my local astronomical society (well, virtually!). Normally they charge non members to watch them, however the committee has agreed they will stream it for free as part of National Astronomy Week ;)

I'll be talking via youtube live for about an hour with slides etc, then there will be a zoom session afterwards for Q&A and discussion. Would be great to see as many of you as possible there if you can make it.

https://www.youtube.com/watch?v=9f8ULLN ... c6JAAE4dOA
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Hope you can join me!

Mark

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Fri Nov 20, 2020 6:55 am
by DeepSolar64
Mark,
I hope it is uploaded to YouTube. Unfortunately I will be at work at that time. :(

James

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Fri Nov 20, 2020 6:57 am
by marktownley
I'll make sure I upload the link to it afterwards ;)

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Fri Nov 20, 2020 7:03 am
by DeepSolar64
Thank you Mark.

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Fri Nov 20, 2020 7:54 am
by Carbon60
Excellent, Mark. Thanks for the heads-up. I'll certainly aim to 'be there'.

Good luck and I hope all goes well. Maybe you'll create some additional solar converts.

Stu.

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Fri Nov 20, 2020 8:10 am
by Montana
:hamster: I look forward to it :hamster:

Alexandra

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Fri Nov 20, 2020 10:51 am
by EGRAY_OBSERVATORY
Many thanks Mark and I will be there.

Regards
Terry

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Fri Nov 20, 2020 11:14 am
by ffellah
Great, Mark, I will try to participate from my office. Looking forward to it !

Franco

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Fri Nov 20, 2020 12:30 pm
by Stardust5858
Thanks Mark, I'll have to watch on YouTube later. Brilliant.

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Fri Nov 20, 2020 2:34 pm
by pedro
Thanks Mark, I will try to watch it

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Fri Nov 20, 2020 4:14 pm
by JochenM
Sounds good, Mark. Will try to tune in (or watch the recording if I can't).

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Fri Nov 20, 2020 4:58 pm
by rsfoto
Hi Mark,

I will watch if I do not forget it. It is a good hour here in Mexico :bow2

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Sat Nov 21, 2020 3:35 pm
by Fabio_Imm
Hi Mark,
I look forward to it

Fabio

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Sun Nov 22, 2020 7:48 am
by yltansg
Hi Mark, I would like to watch the live session. Unfortunately, the live session will be at 3:30 am local time. Glad that I can watch the uploaded version.

Thank you for letting us know. Have a great talk.

Alfred

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Sun Nov 22, 2020 3:18 pm
by Highbury Mark
Look forward to it too.

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Sun Nov 22, 2020 3:26 pm
by marktownley
Thanks all, I managed to get some images of todays sun in Ha and CaK which i'll include.

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Sun Nov 22, 2020 4:53 pm
by p1taylor
Hi Mark, Thanks Mark and I will be there.
peter

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Mon Nov 23, 2020 9:53 pm
by Montana
I really enjoyed it Mark, well done and :bow2 :hamster: :hamster: lovely aurora animations :)

Alexandra

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Mon Nov 23, 2020 9:58 pm
by LTHB
Very informative talk - thanks, Mark!

Frank

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Mon Nov 23, 2020 10:05 pm
by EGRAY_OBSERVATORY
Many thanks Mark for your efforts in producing and showing such an excellent and informative presentation.

Myself and two others watched (separately of course) and enjoyed your work.

Best Wishes
Terry

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Mon Nov 23, 2020 10:09 pm
by marktownley
Thanks everyone, i'll pop this in the reference library in a day or so time.

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Mon Nov 23, 2020 10:23 pm
by ffellah
Great talk, Mark, thank you ! I was in and out watching because of work but plan to watch it again maybe this weekend from home when all is quiet.
It was very nice to cross the pond for a little while...

Franco :band

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Mon Nov 23, 2020 11:23 pm
by MapleRidge
Hi Mark...

I will have to catch the YouTube version...watching first hand wasn't practical.

Brian

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Tue Nov 24, 2020 7:24 am
by Carbon60
Nicely done, Mark. I really enjoyed your talk.

Stu.

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Tue Nov 24, 2020 7:30 am
by marktownley
Thanks everyone for your kind words and support.

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Tue Nov 24, 2020 10:25 am
by JochenM
Watched it "live" yesterday.

Very interesting and well presented, Mark!

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Tue Nov 24, 2020 6:45 pm
by p1taylor
I enjoyed it Mark, well done.

peter

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Tue Nov 24, 2020 8:12 pm
by Highbury Mark
Really excellent presentation Mark - passed in a flash because it was interesting and informative throughout - thanks.

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Tue Nov 24, 2020 9:51 pm
by DeepSolar64
Mark, have you a link to it on YouTube yet?

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Tue Nov 24, 2020 9:56 pm
by marktownley
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

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Tue Nov 24, 2020 10:11 pm
by DeepSolar64
Thank you Mark.

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Wed Nov 25, 2020 11:04 am
by robert
Nice talk, covered lots of ground. Thanks!!
Robert

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Wed Nov 25, 2020 4:50 pm
by dhkaiser
Thanks Mark, interesting theory with the northern and southern peaks of the solar cycle.

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Wed Nov 25, 2020 8:16 pm
by Rusted
Great job Mark! Fascinating from beginning to end. Thanks. :bow

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Thu Nov 26, 2020 6:23 am
by DeepSolar64
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

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Thu Nov 26, 2020 6:34 pm
by Montana
Interesting new data about the hemispheres and the odd and even solar cycles
https://arxiv.org/ftp/arxiv/papers/2011/2011.12559.pdf

Alexandra

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Fri Nov 27, 2020 7:22 pm
by pedro
I saw the talk today (youtube), brilliant, thanks Mark

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Sat Nov 28, 2020 8:05 am
by marktownley
Thanks very much everyone. Here's a link to another paper on hemispherical asymmetry.

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

Re: Solar Talk - Monday 23rd November 19.30UT

Posted: Sat Nov 28, 2020 1:24 pm
by Lowjiber
Mark, I just got the chance to watch your talk on YouTube. That was fantastic! Thank you very much.:)

Clear Skies