Paul Sutton

astrophysics

Stsci lectures Feb 2024 update

I have been catching up on these lectures as they are fascinating. The LISA talk was also good as it gave a lot of background information as to the science behind this. Exciting times to come, even though it may be a decade before the mission is launched in to space.

So far I have watched:-

Links

Tags

#STSCI,#JWST,#LIGO,#LISA,#Space,#Astronomy,#Research,#Science,#Physics,#Astrophysics


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Advances in formation theory of supermassive black holes.

Another article posted to the Fediverse. This looks at new theories around the formation of Supermassive black holes

Supermassive black holes exist in the centres of Galaxies, there is one at the centre of the Milky way galaxy which was photographed a few years ago. The photo below is from the Wikipedia article.

Milky Way black hole

Links

Tags

#Astronomy,.#Astrophysics,#Cosmology,#SuperMassiveBlackHoles, #Formation.


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Diverse organic-mineral associations in Jezero crater, Mars

The rover that just keeps giving, so looks like “NASA's Perseverance Mars rover discovers more evidence of building blocks of life on Mars.”.

This is from the original Fediverse post by Natalie Davis

NASA's Perseverance Mars rover discovers more evidence of building blocks of life on Mars. Although the organic molecules were not necessarily the products of biological processes, it does raise the chances Mars once had life and could indicate we're looking in the right place.

So exciting stuff, the full article in Nature can be found here

So we are finding more evidence Mars may once have had life. If you want to learn more about some of the basic building blocks of life and how we go about finding these, please check a previous post about the Mumbai University Astrobiology course videos

In the mean time feel free to ask on Fedi or on Science forums.

Tags

#Mars #Perseverance #life #astronomy #astrophysics #astrodon #space #science


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Exoplanets Transit simulator

This was posted to Mastodon by Dr. Alexandre Santerne. Just had a go and it looks really nice and smooth, and has few options to change the simulation parameters.

Do you know how #astronomers are hunting for #exoplanets ? Most of them are discovered with the transit and/or radial velocity techniques.

We developed at #LAM (#laboratoire d'#astrophysique de #Marseille) a web tool that simulate an #exoplanet and show you their photometric and radial velocity signals. Feel free to play with the parameters and see how they change the signals.

Links

Tags

#Exoplanet,#Astronomy,#Astrophysics,#Marselle,#Simulator,#Transit, #Stars,#Star,#Exoplanet,#Spectra,#AbsorbtionSpectra,#EmissionSpectra


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Jupiter Moons

While the hunt for exoplanets is developing at pace, closer to home we keep finding new moons, esp around Jupiter. This week we found 12 new moons.

This is reported by Meson Stars – online news about space exploration, posted to Fedi by Frederic

Links

Tags

#Astrodon #astronomy #astrophysics #Jupiter


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Wormholes

I just found an interesting paper on arXiv about wormholes. While wormholes are still hypothetical,, this paper looks at how we can look for them, formation ,structure.

Feel free to discuss further on discourse. I will update this post if I create a thread on there. Otherwise I will start a thread on the Open University forums.

REFERENCES

TAGS

#Physics,#Astronomy,#Wormholes.#arXiv,#Astrophysics

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This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License


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Enigmatic fast radio burst pinned on magnetised dead star

This is an interesting development, astronomers have found something they have been spending years searching for. Not sure where these stars appear on the The Hertzsprung-Russell diagram.

https://www.bbc.co.uk/news/science-environment-54815687

The paper for this can be found on Physics World. Reported on IOPScience on 4th November 2020.

Currently discussing on a OU Science forum.

#bbc,#news,#science,#fsb,#space,#astronomy,#physics,#astrophysics.


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Building Black Holes in a Lab

This is a really interesting video from PBS Space Time.

So if Black holes leak away mass via Hawking Radiation, does this mean that as white holes also exist, and expel matter rather than suck matter in. then are they also contributing to a mass reduction. This probably assumes the theory that there is a white hole at the other end of the Black hole, otherwise it raises questions as to where does all that matter go?

Further Study

Coursera offer several Physics Courses

References

Further discussion

A thread asking about black hole mass loss via white holes can be found on Science Forums here if anyone would like to contribute to the conversation.

#space,#physics,#blackhole,#astrophysics,#astronomy


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In the night sky : Orion Completed

I have finally, after months of going back and forth to this, partly due to other study and things to do. Completed the 24 hour OU / OpenLearn Course. I was just doing this casually anyway.

Note: This is a Level 1 Open University course.

After studying this course, you should be able to:

* Understand facts, concepts, principles, theories, classifications and language used in astronomy * Understand the range of sizes, distances and motions of objects in the night sky * Understand the structure, evolution and the main processes operating in stars * Understand the properties of planets in our Solar System and exoplanetary systems * Understand the history of the universe.

Really interesting course, lots to think about and learn just from doing some of the research for the questions posed during the course.

Astronomy uses the greek alphabet for star names for example so this post may help.

#course #openlearn #openuniversity #science #space #astronomy #cosmology #physics #astrophysics #chemistry #biology #OU #greek


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