Results 141 to 150 of about 165,947,395 (159)
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Astrophysics: Assortment in the Galaxy
2009© 2009 Macmillan Publishers Limited. Published online 25 November 2009.
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Astrophysics in the Next Decade: The Evolution of Galaxies
2009One of the primary goals of observational cosmology is to understand how galaxies form and evolve into the current population of objects we observe around us today. The redshift range, 1.5 ⩽ z ⩽ 3.5 represents a crucial epoch for observing the assembly of the modern galaxy population, which is largely in place by z ∼ 1.
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Cosmology and Astrophysics with Clusters of Galaxies (Invited)
2004I discuss the role that X-ray galaxy clusters plays in the determination of cosmological parameter. In particular I focus the discussion on the evolution of the cluster mass function for the determination of the density parameter Ωm and the normalization of the power spectrum σ8. Available constraints indicate that Ωm lies in the range 0.2–0.5, with σ8
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Astrophysics of galaxy clusters and groups with eROSITA
This thesis investigates non-gravitational astrophysical phenomena shaping the physical properties of galaxy clusters and groups. The impact of these processes is constrained by measuring the physical properties of galaxy clusters and groups using X-ray observations of eROSITA.openaire +1 more source
Detailed astrophysical properties of Lyman Break Galaxies
2003A large statistical sample of z~3 galaxies has been efficiently UV-color-selected, and confirmed spectroscopically. Here we present additional observations providing insight into the physical conditions in these Lyman Break Galaxies (LBGs), selected to be rapidly forming stars when the universe was ~15% of its current age.
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Aspects of Cosmic-Ray Astrophysics in the Galaxy and Beyond
1996We review some salient aspects of cosmic-ray astrophysics. Recent advances are discussed, and several outstanding problems are sketched.
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Astrophysics: Less greedy galaxies gulp gas
2010The cool molecular gas from which stars form has been detected in relatively ordinary faraway galaxies. The results point to a continuous fuelling of gas into the star-forming guts of assembling galaxies.
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