New paper on observing "Clarke Exo-belts"

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Eric Korpela Project Donor
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Message 2021712 - Posted: 4 Dec 2019, 19:44:43 UTC
Last modified: 4 Dec 2019, 19:49:48 UTC

Dr. Korpela and his colleagues Prof. Shauna Sallmen and Ms. Kaisa Crawford-Taylor have published a new paper today in the Astronomical Journal about whether astronomers be able to detect belts of satellites circling planets around other stars. Unfortunately, the answer is that even the thickest satellite belts will be very difficult to see with current technology. Even the James Webb Space Telescope will find it difficult.

If, like most sentient beings in the Galaxy, you don't have a subscription to the Astronomical Journal you can see a preprint of the article at arXiv.org.
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PerseidsGirl Project Donor
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Message 2021832 - Posted: 5 Dec 2019, 17:11:03 UTC - in response to Message 2021712.  

Thank you for the link to the journal article. Very interesting -- I bet all the parameters do make detection extremely difficult!

Just one Q: why is it important to find and study belts around exoplanets of M-class stars?
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Message 2021857 - Posted: 5 Dec 2019, 21:41:46 UTC - in response to Message 2021712.  

I have to ask, did someone mean "Clarke" Exo-belts, for Arthur C. Clarke?
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Message 2021916 - Posted: 6 Dec 2019, 6:41:21 UTC - in response to Message 2021857.  
Last modified: 6 Dec 2019, 6:43:13 UTC

I have to ask, did someone mean "Clarke" Exo-belts, for Arthur C. Clarke?


Correct... looks like a typo. And yes, it is named after him as he basically invented the concept of the geostationary comsat (as well as writing much of my favorite sci-fi.)
I've passed it on (don't want to be editing thread titles in a newsfeed) so hopeful it will be corrected.
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Message 2021979 - Posted: 7 Dec 2019, 0:09:45 UTC - in response to Message 2021832.  

Just one Q: why is it important to find and study belts around exoplanets of M-class stars?

M-class stars are the most common type (around 75% of stars) and because they are the most common, most nearby stars are going to be M-class and most planets will be found around M-stars. The TESS mission, looking for nearby planetary systems, will mostly find planets around M-stars. That's why we spend a lot of time talking about M-stars. There aren't many stars like the sun (G-class) that are close enough for us to observe these effects (even though G-stars are much brighter than M-stars). It was also the focus of Hector Socas-Navarro's earlier paper on Clarke belts, and we wanted to respond to some of the misconceptions people had about that paper.

Of course we don't know if life is common around M-stars (yet).
@SETIEric@qoto.org (Mastodon)

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Message 2022716 - Posted: 11 Dec 2019, 4:21:25 UTC - in response to Message 2021712.  

Dr. Korpela and his colleagues Prof. Shauna Sallmen and Ms. Kaisa Crawford-Taylor have published a new paper today in the Astronomical Journal about whether astronomers be able to detect belts of satellites circling planets around other stars. Unfortunately, the answer is that even the thickest satellite belts will be very difficult to see with current technology. Even the James Webb Space Telescope will find it difficult.

If, like most sentient beings in the Galaxy, you don't have a subscription to the Astronomical Journal you can see a preprint of the article at arXiv.org.
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Message 2022718 - Posted: 11 Dec 2019, 4:32:17 UTC - in response to Message 2022716.  

Regarding Clarke Exo-Belts, I believe a truly advanced civilization would have harnessed their planets natural magnetic and electrical fields. In doing this, they have eliminated the need for external satelites. If the argument is for photographic purposes, harnessing and tuning to a planets energy would give the civilization the ability to generate a perfect map through to the core in layers one atom thick.

Search for planets that would show characteristics of harnessing that energy. It would be easier than searching for belts 1,000,000,000th the size of the planet you are looking at.

Additionally, a planet, such as earth, creates enough energy through, lightening, hurricanes, eruptions, ocean currents, solar, wind, hydrogen, etc., it would be irrational to think they would utilize a Dyson Swarm or Sphere to power their planet.
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Message 2022900 - Posted: 12 Dec 2019, 21:44:26 UTC - in response to Message 2021979.  

Place a strong magnetic field around the tube of your telescope, one that is produced from electric wires wrapping. and watch the increase in image size.

Just a suggestion.
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Message 2026107 - Posted: 3 Jan 2020, 9:48:59 UTC - in response to Message 2021832.  

Belts of satellites say: there is somebody outside
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Message 2026142 - Posted: 3 Jan 2020, 15:10:19 UTC

Just M2 IV for that of a subdwarf, and I am getting old for only making it a giant star instead.
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Message boards : News : New paper on observing "Clarke Exo-belts"


 
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