New Special Issue: Dark Energy in GRG Journal

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The journal 'General Relativity and Gravitation' has published a new special issue focused on Dark Energy, featuring 15 articles available for free. The announcement highlights the importance of this topic in the field of cosmology. Participants express appreciation for the resource and hope for continued access to the articles. The links provided facilitate easy access to the content. This special issue serves as a valuable contribution to ongoing discussions about Dark Energy in scientific research.
Atakor
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Hello,

'General relativity and Gravitation' journal has released a new special issue about Dark energy.
15 articles, 100% free !

http://www.springerlink.com/content/lm37485593h5/?sortorder=asc

enjoy:wink:
 
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Thank you for bringing that to our notice Atakor and welcome to these Forums!

Garth
 
You're welcome Garth and thanks !
 
I hope that they do not limit the access before I get to read all the articles.
jal
 
Thanks very much for the links.
 
Abstract The Event Horizon Telescope (EHT) has significantly advanced our ability to study black holes, achieving unprecedented spatial resolution and revealing horizon-scale structures. Notably, these observations feature a distinctive dark shadow—primarily arising from faint jet emissions—surrounded by a bright photon ring. Anticipated upgrades of the EHT promise substantial improvements in dynamic range, enabling deeper exploration of low-background regions, particularly the inner shadow...
https://en.wikipedia.org/wiki/Recombination_(cosmology) Was a matter density right after the decoupling low enough to consider the vacuum as the actual vacuum, and not the medium through which the light propagates with the speed lower than ##({\epsilon_0\mu_0})^{-1/2}##? I'm asking this in context of the calculation of the observable universe radius, where the time integral of the inverse of the scale factor is multiplied by the constant speed of light ##c##.
Title: Can something exist without a cause? If the universe has a cause, what caused that cause? Post Content: Many theories suggest that everything must have a cause, but if that's true, then what caused the first cause? Does something need a cause to exist, or is it possible for existence to be uncaused? I’m exploring this from both a scientific and philosophical perspective and would love to hear insights from physics, cosmology, and philosophy. Are there any theories that explain this?
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