More interesting findings about the early universe, I guess some of this makes sense as one of the 4 fundamental forces is Electromagnetic forces.

This research findings are detailed here. So if I understand this correctly, the early universe processes had that were had electrically charged dust particles, these produced magnetic fields as they moved around by the radiation from the 2nd generation of stars.

There is a related paper on arXiv on this research.

Update 13/1/2025 – a related or seemingly related discovery

• Detection of magnetic fields in superclusters of galaxies

Tags

#Space,#Stars,#MagneticFields,#Radiation,#Dust,#Physics,#Astronomy

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NUMBERS

#0AD

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

• Exoplanet Simulator
• Laboratoire d'astrophysique de Marseille

Tags

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

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On the 16th January there were two interesting posts from Omnium Gatherum to the fediverse regarding Neutron stars.

Fedi id: @omniumgatherum@hrmtc.io

Neutron Star Merger Simulation with Gamma-ray Observations

NASA’s Retired Compton Mission Reveals Superheavy Neutron Stars

Other Links * NASA * NASA Article * Science Forums

Tags

#NASA,#Space,#Astronomy.#Stars,#Neutron,#NeutronStars,#Merger, #Supermassive

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This was posted to Mastodon (where all the really cool people are btw). A short video by Swapna Krishna Author of A POCKET GUIDE TO STARGAZING.

This video compares images of a star forming region taking using both the HST and JWST, great illustration on how the image data differs when the same area is viewed using the JWST Infra red capabilities.

Video

Tags

#Galaxy,#Stars,#Formation,#SpaceTelescope,#HST,#JWST

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So following on from the post on December 1st this is a quick review of the active galaxies lecture from the Space Telescope Science Institute.

This lecture, presented by Dr Mitchell Revalski, is really interesting, looking at how supermassive black holes, despite their small size compared to the galaxy they reside in.

Energy from these can push away surrounding gas, and heat this up which reduces star formation as gas needs to cool to form stars.

so scales are pretty huge:

First lets look at what a light year is

Citation : spaceplace.nasa.gov

For most space objects, we use light-years to describe their distance. A light-year is the distance light travels in one Earth year. One light-year is about 6 trillion miles (9 trillion km). That is a 6 with 12 zeros behind it! 

1 pc = 1 parsec = 3.26 light years

Supermassive black hole < 1pc

Bulge = 1 = 3 kpc (kilo parsec)

disk 30 kpc

circumgalactic area 50kpc

So even though these black holes are very small, they have a big influence on what surrounds them.

We know this is happening thanks to the research that led to the 2020 Nobel prize.

Well worth watching and the link is above.

Next lecture 19th Jan – The Darkest Secrets of the Universe Speaker: Raja Guhathakurta (UC Santa Cruz)

#astronomy,#science,#space,#telescope,#scsci,#talk, #solarsystem,#galaxy,#blackhole,#supermassive,#stars, #gravity,#light,#matter,#atoms,#emissions,#aabsorption, #spectrum,#gamma,#xray,#visible,#invisible,#parsec, #lightyear,#distance,#galactic,#bulge,#spacetelescope, #groundtelescope,#astronomers,#education,#public

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