Results 31 to 40 of about 291 (131)
Galactic Winds in the Intergalactic Medium
The Astrophysical Journal, 2002 We have performed hydrodynamical simulations to investigate the effects of galactic winds on the high-redshift (z=3) universe. Strong winds suppress the formation of low-mass galaxies significantly, and the metals carried by them produce C IV absorption lines with properties in reasonable agreement with observations. The winds have little effect on the
THEUNS T +5 more
openaire +3 more sources
Cosmological Blast Waves and the Intergalactic Medium [PDF]
The Astrophysical Journal, 1996 Winds from protogalactic starbursts and quasars can drive shocks that heat, ionize, and enrich the intergalactic medium. The Sedov-Taylor solution for point-like explosions adequately describes these blastwaves early in their development, but as the time since the explosion ($t - t_1$) approaches the age of the universe ($t$), cosmological effects ...
openaire +2 more sources
Particle energy cascade in the intergalactic medium [PDF]
Monthly Notices of the Royal Astronomical Society, 2010 We study the development of high energy (E_in < 1TeV) cascades produced by a primary electron of energy E_in injected into the intergalactic medium (IGM). To this aim we have developed the new code MEDEA (Monte Carlo Energy DEposition Analysis) which includes Bremsstrahlung and Inverse Compton (IC) processes, along with H/He collisional ionizations ...
Valdés, M., Evoli, C., FERRARA, ANDREA
openaire +2 more sources
, 2000 About half a million years after the Big Bang, the ever-fading cosmic blackbody radiation cooled below 3000 K and shifted first into the infrared and then into the radio, and the smooth baryonic plasma that filled the Universe became neutral. The Universe then entered a ``dark age'' which persisted until the first cosmic structures collapsed into ...
openaire +2 more sources
Metals in the intergalactic medium [PDF]
Proceedings of the International Astronomical Union, 2005 The absorption lines seen in the spectra of quasars trace gas over a very large range of overdensities, from galaxies to voids and probably account for most of the baryons at high redshift. Once thought to be a chemically pristine remnant of the Big Bang, the Lyman alpha forest has now been shown to contain significant quantities of metals.
openaire +1 more source
Simulations of the Intergalactic Medium [PDF]
Symposium - International Astronomical Union, 2005 I present an epochal review of baryons in the intergalactic medium (IGM), from the reionization epoch until today. Recent observations indicate a protracted period of reionization, suggesting multiple populations of reionizers; detection of these z ≳ 6 sources is a key goal that is now coming within reach.
openaire +2 more sources
The intergalactic medium (IGM) comprises all the matter that lies between galaxies. Hosting the vast majority ($\gtrsim 90\%$) of the baryons in the Universe, the IGM is a critical reservoir and probe for cosmology and astrophysics, providing insights into large-scale structure formation and galaxy evolution.
openaire +2 more sources
Assessing the benefits of the "Intergalactic World" social emotional learning program for 8-12-year-old children in Portugal: perspectives from teachers and caregivers. [PDF]
Front Psychol, 2023 Antunes R +4 more
europepmc +1 more source
"Fermi" bubbles are bursting from our galaxy. Their origins remain a mystery. [PDF]
Proc Natl Acad Sci U S A, 2023 Mann A.
europepmc +1 more source
Considering light-matter interactions in the Friedmann equations. [PDF]
Proc Math Phys Eng Sci, 2022 Vavryčuk V.
europepmc +1 more source