Accelerated expansion and lightcurves

AI Thread Summary
The discussion centers on the relationship between time dilation associated with cosmological redshift and the accelerated expansion of the universe as observed in Type Ia supernovae since 1998. Participants question whether the photometric slowing of these supernova lightcurves is directly linked to this accelerated expansion. There is mention of the Pound-Rebka experiment, which verified gravitational time dilation, but the relevance to the current topic is unclear. The conversation highlights a potential gap in understanding how time dilation impacts the interpretation of supernova data. Overall, the connection between time dilation and supernova lightcurves in the context of cosmic expansion remains a point of inquiry.
TrickyDicky
Messages
3,507
Reaction score
28
Is the time dilation associated to cosmological redshift that can be seen as a photometric slowing of the SNe Ia lightcurves directly related to the accelerated expansion seen on these same type of supernova from 1998? If not, what's the difference?

Thanks
 
Astronomy news on Phys.org
nobody here heard of the time dilation test? or lightcurves?
 
What time dilation are you referring to , I know they tested the gravitational red-shift of light , with the pound-Rebka experiment and verified gravitational time dilation
 
TL;DR Summary: In 3 years, the Square Kilometre Array (SKA) telescope (or rather, a system of telescopes) should be put into operation. In case of failure to detect alien signals, it will further expand the radius of the so-called silence (or rather, radio silence) of the Universe. Is there any sense in this or is blissful ignorance better? In 3 years, the Square Kilometre Array (SKA) telescope (or rather, a system of telescopes) should be put into operation. In case of failure to detect...
Thread 'Could gamma-ray bursts have an intragalactic origin?'
This is indirectly evidenced by a map of the distribution of gamma-ray bursts in the night sky, made in the form of an elongated globe. And also the weakening of gamma radiation by the disk and the center of the Milky Way, which leads to anisotropy in the possibilities of observing gamma-ray bursts. My line of reasoning is as follows: 1. Gamma radiation should be absorbed to some extent by dust and other components of the interstellar medium. As a result, with an extragalactic origin, fewer...
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...
Back
Top