Results 31 to 40 of about 50 (50)

Reification of galaxies: cognitive astrophysics and the multiwavelength inverse problem [PDF]

Proceedings of the International Astronomical Union, 2011
Lessons learned in the history and philosophy of science have generally had little immediate impact on how we as individual astronomers conduct our research. And yet we do share many common views on how we undertake basic research, and how we translate observations and theory into communicable knowledge.
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The astrophysical behavior of open clusters along the Milky Way Galaxy

NRIAG Journal of Astronomy and Geophysics, 2014
The main aim of this paper is to study the astrophysical behavior of open clusters' properties along the Milky Way Galaxy. Near-IR JHK (2MASS) photometry has been used for getting a homogeneous Catalog of 263 open clusters' parameters, which are studied for the first time by the author through the last five years.
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Astrophysical Black holes: An Explanation for the Galaxy Quenching

We propose models of Astrophysical Black holes (ABHs) without event horizons (EHs), as a more viable explanation for the long-term quenching phenomenon in galaxies. At the same time, the short-term quenching is explained here in terms of an efficient feedback expected in the models of stellar-mass astrophysical black holes (StMABHs). We have calculated
Trivedi, Jay Verma, Joshi, Pankaj S., Gopal-Krishna, Biermann, Peter L.   +3 more
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Less greedy galaxies gulp gas

Nature, 2010
The 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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Dark matter and dark energy in galaxies and astrophysical objects

Journal of Physics: Conference Series, 2006
I describe static configurations of dark matter coupled to the scalar field responsible for the dark energy of the Universe. The mass of the dark matter particles is a function of the scalar field. I discuss first the profile of the dark matter halos in galaxies. In the presence of a scalar field, the velocity of a massive object orbiting the galaxy is
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Astrophysics: Galaxy superclusters and cosmic strings [PDF]

Nature, 1986
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The Multifrequency Astrophysics of Galaxy Clusters

Chinese Journal of Astronomy and Astrophysics, 2003
We discuss the evidence and the physical relevance of the astrophysical phenomena (of thermal and non-thermal origin) occurring in galaxy clusters as obtained from multi-frequency observations, from radio to gamma-rays.
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Cosmology and astrophysics with galaxy clusters

AIP Conference Proceedings, 2014
Galaxy clusters are the largest gravitationally bound objects in the universe, whose formation is driven by dark energy and dark matter. The majority of the baryonic mass in clusters resides in the hot X-ray emitting plasma, which also leaves imprints in the cosmic microwave background radiation.
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Assortment in the Galaxy

Nature, 2009
Observations of star clusters in the Milky Way defy the view that the constituents of these systems are almost invariably chemically alike. The outlying clusters could be the tattered relics of once larger systems.
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Monstrous galaxies unmasked

Nature, 2015
The enigma of how the most luminous galaxies arise is closer to being solved. New simulations show that these are long-lived massive galaxies powered by prodigious gas infall and the recycling of supernova-driven outflows. See Letter p.496 Due in part to their extreme infrared luminosities, it has ...
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