Sentences with phrase «acceleration in supernova»

Not exact matches

In the past few years, astronomers have solidified the case for cosmic acceleration by studying ever more remote supernovae.

Recent Hubble Space Telescope images of a supernova that exploded 8 billion light - years from Earth (below) is filling in details of what happened during the transition period between deceleration and acceleration.

He is now working to develop a computational model to describe the acceleration of particles in supernova remnants.

Observations of the explosions of white dwarf stars in binary systems, so - called Type Ia supernovae, in the 1990s then led scientists to the conclusion that a third component, dark energy, made up 68 % of the cosmos, and is responsible for driving an acceleration in the expansion of the universe.

The supernova in question is SN 2017cbv, a thermonuclear Type Ia, which astronomers use to measure the acceleration of the expansion of the universe.

Astronomers have mapped the degree of acceleration of electrons in an exploded supernova, or remnant, for the first time.

Understanding the physics of these astrophysical objects is crucial as they are considered as the possible progenitors of thermonuclear supernovae, being used in cosmology to measure the acceleration of the universe expansion linked to dark energy.

HEFT will map the hard X-ray emission from supernova remnants to investigate issues of stellar nucleosynthesis (through the mapping of radioactive Titanium) and study the origin and acceleration of cosmic - rays (through mapping the continuum hard X-rays produced in the same shocks that produce the cosmic - rays).

Estimating both the distance and recession speed of ancient Type - Ia supernovae allow astronomers to calculate the expansion of the universe, back during an era when matter in the universe was still relatively dense and expansion was still slowing under the influence of gravity and before its later hypothesized, subsequent acceleration from a mysterious repulsive force (more from NASA's Observatorium and NERSC's press release).

Archival work, of course, isn't exactly what most scientists dream to be doing at NASA, so in 1999 Dr. Livio began shifting his research, focusing on black holes, acceleration of mass, white dwarves, neutron stars and particularly on supernova explosions.

In order to understand the origin and acceleration of cosmic ray protons, researchers used data from the Fermi Gamma - ray Space Telescope and targeted W44 and IC 443, two supernova remnants thousands of light years away.