Paul Sutton

Physics

Handbook of X-ray and Gamma-ray Astrophysics

This was posted to the Fediverse earlier today, I replied to the post with a link to the resource [1]. As mentioned, there are a good few papers on arXiv [2]

This is a great way to bring together related resources so they can be found quickly and easily.

Links

1 Handbook of X-ray and Gamma-ray Astrophysics 2 arXiv

Tags

#Science,#Physics,#Astrophysics,GammaRay,#XRay,#Handbook,#Resource,#arXiv,#Papers,#Articles,#Journal.


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positronium

Positronium is a particle that has no actual nucleus, but has a positive (positron) and negative (electron) particle. The positron is antimatter as it has the opposite charge to an electron, which is negatively charged.

Scientists have found a way to freeze the particle with lazers, which will allow further study.

You can read a little more on the BBC Website. While the research was published in Physical Review Letters.. Article can be found here

Tags

#Physics,#Letters,#Research,#Electron,#Antimatter,#Positron,#Positronium


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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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LISA – the Laser Interferometer Space Antenna

This is another upcoming project, which will see a huge space based laser antenna created to help in the search for gravitational waves.

You can read more about this here it may be possible to invite someone to the STEM group to talk more about the science behind this.

I think the LIGO project is similar to this. There is certainly a lot of interest in Gravitational waves at the moment.

Tags

#Science,#Physics,#GravitationalWaves,#Observatory,#Antenna


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Ultraheavy particle dark matter

Paper on the production of Ultraheavy particle dark matter

Daniel Carney et al. * SciPost Phys. Core 6, 075 (2023)

We are the community behind #SciPost's #physics journals

Tags

#Physics,#Particles.#Ulytsheavy.#DarkMatter,#Production.#Science


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Home Chemistry 18

I have had another go at growing salt crystals. This time I dissolved a quantity of pure Sodium Chloride (NaCl) in to water using a conical flask, then poured this solution in to a glass dish and left for about 2/3 weeks.

Eventually all the water evaporated away, leaving crystals behind. Using my USB microscope, I found and took a picture of some that had grown in to a nice cube shape.

salt crystals

Update 29/7/2023

I have taken another photo using the USB Microscope and also included the calibration / measurement sheet in the photo to try and illustrate crystal size.

Please see Mastodon post for details.

Tags

#Chemistry,#HomeChemistry,#HomeChemistry18,#science,#physics,#biology


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Physicists suggest that black holes could have an exit to other places in the universe

Interesting article from Meson Stars regarding black holes having possible exits. I have included a paste of my Fediverse comment below. However feel free to discuss on Fediverse or on Science forums.

Links

Comment

This does make some sense, I have heard about white holes, which are the opposite of black holes as they allow matter to be ejected in to space.   This seems to tie in with the suggestion in the article that if you could pass through you cannot get back again.  However in relation to this

"Scientists have already said that all matter inside a black hole is destroyed, "

I got the impression matter can't be created or destroyed, it is interchangeable with energy.  In which case, could it be that matter is drawn in to a black hole, somehow converted in to energy then ejected from a white hole? 

So purely on a speculative idea

So how do we find these white holes, perhaps we have already found them as we can detect things like gamma ray bursts or neutrino emissions but can't always explain them,  perhaps these are related to white holes and we are observing the release of energy in to space as these or similar phenomenon

Videos

Tags

#Science,#Physics,#Blackholes,#Matter,#Astronomy,#Cosmology


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Halogens and the ozone layer

Interested research posted on Phys.org looking at Halogens and tropical region ozone depletion

Tags

#Physics,#Ozone,#Depletion,#Halogens,#Research


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