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Astrophysics and Astronomy Commons

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Astrophysics

Cosmology, Relativity, and Gravity

Selected Works

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Full-Text Articles in Astrophysics and Astronomy

Gravitational Wave Astrophysics With Compact Binary Systems, Eric Addison Apr 2014

Gravitational Wave Astrophysics With Compact Binary Systems, Eric Addison

Eric Addison

Gravitational waves are ripples in the fabric of spacetime that convey information about
changing gravitational fields. Large-scale detection projects are currently in operation, and
more advanced detectors are being designed and built. Though we have yet to make a
direct detection of a gravitational wave signal, upgrades to current detectors are expected
to bring the first detections within the next year or two.

Gravitational waves will bring us information about astrophysical phenomena that is
complementary to the information gained from photon-based observations (e.g., telescopes
and radio receivers). One of the primary sources of gravitational waves are binary systems:
two massive …


Essentials Of The Theory Of Abstraction - Lecture, Subhajit Kumar Ganguly Jan 2012

Essentials Of The Theory Of Abstraction - Lecture, Subhajit Kumar Ganguly

Subhajit Kumar Ganguly

In not favouring solutions or sets of solutions, the principle of zero-postulation drives away any unwanted incompleteness from the description of the world. It is the interactions between the possible exhaustive set of solutions that creates the impression pointedness or directiveness in the universe, leading to the formation of clusters, as discussed earlier. These interactions may be chaotic in nature, giving rise to attractor points where the directiveness inside any given system asymptotically seem to approach. It is this directiveness, in turn, inside a given system or in the universe as a whole, that is the cause of all known …


Condensation States And Landscaping With The Theory Of Abstraction, Subhajit Kumar Ganguly Jan 2011

Condensation States And Landscaping With The Theory Of Abstraction, Subhajit Kumar Ganguly

Subhajit Kumar Ganguly

The Abstraction theory is applied in landscaping. A collection of objects may be made to be vast or meager depending upon the scale of observations. This idea may be developed to unite the worlds of the great vastness of the universe and the minuteness of the sub-atomic realm. Keeping constant a scaling ratio for both worlds, these may actually be converted into two self-same representatives with respect to scaling. The Laws of Physical Transactions are made use of to study Bose-Einstein condensation. As the packing density of concerned constituents increase to a certain critical value, there may be evolution of …