The term "faint regime" in cosmological explosions likely refers to astronomical objects that are either distant and exhibit low brightness (low flux) or are intrinsically low in luminosity. This concept is relevant in the context of phenomena like X-ray flashes, where detection is challenging due to their faintness. Understanding this regime is crucial for interpreting observations and the underlying physics of these events. The discussion highlights the need for further clarification and references to relevant research papers for deeper insights. Overall, the faint regime plays a significant role in the study of cosmological explosions.
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What do they mean with "faint regime", when they talk about cosmological explosions?? (e.g X-ray flashes)
I have no idea, can you give us a link to the paper you are reading? I'm guessing they're speaking of objects that are far away and therefore aren't very bright (i.e. low flux). Though it's also possible they're referring to some technical class of objects that are intrinsically faint (i.e. low luminosity).
Partial solar eclipse from Twizel, South Isl., New Zealand ...
almost missed it due to cloud, didnt see max at 0710 NZST as it went back into cloud.
20250922, 0701NZST
Canon 6D II 70-200mm @200mm,
F4, 100th sec, 1600ISO
Makeshift solar filter made out of solar eclipse sunglasses
This thread is dedicated to the beauty and awesomeness of our Universe. If you feel like it, please share video clips and photos (or nice animations) of space and objects in space in this thread. Your posts, clips and photos may by all means include scientific information; that does not make it less beautiful to me (n.b. the posts must of course comply with the PF guidelines, i.e. regarding science, only mainstream science is allowed, fringe/pseudoscience is not allowed).
n.b. I start this...
Asteroid, Data - 1.2% risk of an impact on December 22, 2032. The estimated diameter is 55 m and an impact would likely release an energy of 8 megatons of TNT equivalent, although these numbers have a large uncertainty - it could also be 1 or 100 megatons.
Currently the object has level 3 on the Torino scale, the second-highest ever (after Apophis) and only the third object to exceed level 1. Most likely it will miss, and if it hits then most likely it'll hit an ocean and be harmless, but...