The Americans and the French use a different notation for open intervals: The Americans use (x, y) while the French use ]x, y[. How did this notational divergence appear?
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The magnitude-redshift plots of Type Ia supernova told us that the rate of expansion of Universe is accelerating. From that we concluded that the Universe's expansion is accelerating. Thus we assigned Dark Energy as a reason behind the observed acceleration . But its only valid if matter is accel...
A hypernova (pl. hypernovae or hypernovas) is a type of star explosion with an energy substantially higher than that of standard supernovae. An alternative term for most hypernovae is "superluminous supernovae" (SLSNe). Such explosions are believed to be the origin of long-duration gamma-ray bursts.
Just like supernovae in general, hypernovae are produced by several different types of stellar explosion: some well modelled and observed in recent years, some still tentatively suggested for observed hypernovae, and some entirely theoretical. Numerous hypernovae have been observed corresponding to...
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[see Ecole Polytechnique Federale de Lausanne arxiv.org/abs/1402.4119 Accepted by Physical Review Letters, Dec 2014] If the "sterile neutrino particle"[likewise axion also] turns out to have an atomic structure, then it will be a new era not only for particle physics & astronomy, but also in da...
In particle physics, the lightest supersymmetric particle (LSP) is the generic name given to the lightest of the additional hypothetical particles found in supersymmetric models. In models with R-parity conservation, the LSP is stable. There is extensive observational evidence for an additional component of the matter density in the Universe that goes under the name dark matter. The LSP of supersymmetric models is a dark matter candidate and is a Weakly interacting massive particle (WIMP) .
== Constraints on LSP from cosmology ==
The LSP is unlikely to be a charged wino, charged higgsino, slepton...
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