Tension between cosmology from galaxy cluster abundance And
... from clusters and Planck CMB anisotropy measurements is weakened by recent cluster analyses which argue for larger uncertainties, and partly by drift of the Planck constraints towards clusters. However, explaining the entire difference between peak cluster and Planck likelihood values for s8 and Ome ...
... from clusters and Planck CMB anisotropy measurements is weakened by recent cluster analyses which argue for larger uncertainties, and partly by drift of the Planck constraints towards clusters. However, explaining the entire difference between peak cluster and Planck likelihood values for s8 and Ome ...
Citizen Science
... • Galaxy Zoo project: – ~260,000 participants (and growing) – ~1 million galaxies have been labeled (classified) – ~180 million classifications have been collected ...
... • Galaxy Zoo project: – ~260,000 participants (and growing) – ~1 million galaxies have been labeled (classified) – ~180 million classifications have been collected ...
Galaxies - University of Iowa Astrophysics
... Why are Cepheid variable stars useful in determining distances? A) They all have the same distance. B) Their luminosity can be determined from their pulsation period. C) They all have the same luminosity. D) They all have the same radius. ...
... Why are Cepheid variable stars useful in determining distances? A) They all have the same distance. B) Their luminosity can be determined from their pulsation period. C) They all have the same luminosity. D) They all have the same radius. ...
RNA-seq Analysis in Galaxy
... Taylor et al. (2007) Using Galaxy to perform large-scale interactive data analyses. Current Protocols in Bioinformatics Chapter 10, unit 10. Blankenberg et al. (2010) Manipulation of FASTQ data with Galaxy. Bioinformatics ...
... Taylor et al. (2007) Using Galaxy to perform large-scale interactive data analyses. Current Protocols in Bioinformatics Chapter 10, unit 10. Blankenberg et al. (2010) Manipulation of FASTQ data with Galaxy. Bioinformatics ...
Titelseite
... in electron- positron annihilation or in the decay of radioactive elements. • The first gamma line from space was measured in the so-called HEAO-C1 experiment, which detected a gamma-ray line of the element 26Al in 1982. • Gamma spectroscopy has many advantages compared with optical measurements, es ...
... in electron- positron annihilation or in the decay of radioactive elements. • The first gamma line from space was measured in the so-called HEAO-C1 experiment, which detected a gamma-ray line of the element 26Al in 1982. • Gamma spectroscopy has many advantages compared with optical measurements, es ...
The Strikingly Uniform, Highly Turbulent Interstellar Medium of the
... respect to the dynamical center of the system, indicating that the host may be undergoing a minor merger (similar to Riechers et al. 2014), perhaps with the NW source located 6.6 kpc away (see Figure 1). The extent and velocity structure of the [C ii] emission in W2246-0526 leads to two very importa ...
... respect to the dynamical center of the system, indicating that the host may be undergoing a minor merger (similar to Riechers et al. 2014), perhaps with the NW source located 6.6 kpc away (see Figure 1). The extent and velocity structure of the [C ii] emission in W2246-0526 leads to two very importa ...
Cosmology with GMRT
... – Apply to a single object (optical results are averages over large redshift range) – Not subject to the same systematics – Currently probe a complementary redshift range ...
... – Apply to a single object (optical results are averages over large redshift range) – Not subject to the same systematics – Currently probe a complementary redshift range ...
George Greaney
... What is a Quasar? Quasars are one of the Most mysterious and rare objects in astronomy A quasar is a very, Very bright object at the core of a few highly active galaxies. Quasars are thought to form as matter spins into super massive black hole at the center of these galaxies. Illustration from the ...
... What is a Quasar? Quasars are one of the Most mysterious and rare objects in astronomy A quasar is a very, Very bright object at the core of a few highly active galaxies. Quasars are thought to form as matter spins into super massive black hole at the center of these galaxies. Illustration from the ...
The Evolution of Galaxy - Tufts Institute of Cosmology
... Then came 1970. In that year a new satellite, named Uhuru (“freedom” in Swahili) in honor of its launch from Kenya, began observing a form of radiation hitherto nearly inaccessible to astronomers: x-rays. Edwin M. Kellogg, Herbert Gursky and their colleagues at American Science and Engineering, a sm ...
... Then came 1970. In that year a new satellite, named Uhuru (“freedom” in Swahili) in honor of its launch from Kenya, began observing a form of radiation hitherto nearly inaccessible to astronomers: x-rays. Edwin M. Kellogg, Herbert Gursky and their colleagues at American Science and Engineering, a sm ...
Ecosystems, from life, to the Earth, to the Galaxy
... pressure to support the cloud against further collapse. It releases this energy by emitting radiation through the lines of the atoms and molecules present in it, cooling the cloud. How efficiently a cloud cools is determined by the elemental abundance of the cloud, particularly the presence of carbo ...
... pressure to support the cloud against further collapse. It releases this energy by emitting radiation through the lines of the atoms and molecules present in it, cooling the cloud. How efficiently a cloud cools is determined by the elemental abundance of the cloud, particularly the presence of carbo ...
Messier 87
Messier 87 (also known as Virgo A or NGC 4486, and generally abbreviated to M87) is a supergiant elliptical galaxy in the constellation Virgo. One of the most massive galaxies in the local universe, it is notable for its large population of globular clusters—M87 contains about 12,000 compared to the 150-200 orbiting the Milky Way—and its jet of energetic plasma that originates at the core and extends outward at least 1,500 parsecs (4,900 light-years), travelling at relativistic speed. It is one of the brightest radio sources in the sky, and is a popular target for both amateur astronomy observations and professional astronomy study.French astronomer Charles Messier discovered M87 in 1781, cataloguing it as a nebulous feature while searching for objects that would confuse comet hunters. The second brightest galaxy within the northern Virgo Cluster, M87 is located about 16.4 million parsecs (53.5 million light-years) from Earth. Unlike a disk-shaped spiral galaxy, M87 has no distinctive dust lanes. Instead, it has an almost featureless, ellipsoidal shape typical of most giant elliptical galaxies, diminishing in luminosity with distance from the centre. Forming around one sixth of M87's mass, the stars in this galaxy have a nearly spherically symmetric distribution, their density decreasing with increasing distance from the core. At the core is a supermassive black hole, which forms the primary component of an active galactic nucleus. This object is a strong source of multiwavelength radiation, particularly radio waves. M87's galactic envelope extends out to a radius of about 150 kiloparsecs (490,000 light-years), where it has been truncated—possibly by an encounter with another galaxy. Between the stars is a diffuse interstellar medium of gas that has been chemically enriched by elements emitted from evolved stars.