نتایج جستجو برای: supernova

تعداد نتایج: 11735  

2000
Shin Sasaki

The observed luminosity – temperature relation of clusters is considerably steeper than that expected from a simple scaling relation. Although extra energy input is a likely solution, its source has not been identified. We propose intracluster supernova as a possible source, and also predict the supernova rate in intracluster space as a critical test.

2002
MICHEL SOREL

The unique constraints on neutrino oscillations which can be obtained by measuring the energy spectrum of supernova ν̄e’s are first discussed. The focus is on 4-neutrino mass and mixing models capable of explaining the LSND evidence of ν̄μ → ν̄e oscillations. The potential of the Fermilab neutrino detector MiniBooNE to observe supernova neutrinos is then addressed, and a general description of the...

2009
Nick Davis

The Detroit Area Schools Supernova Survey hopes to create and maintain an ever-growing network of part-time supernova searchers, mainly local high school science teachers and their students. At the beginning of this project it was unclear whether or not there was a reasonable chance of success due to the weather and sky conditions in Detroit. Initial testing had been promising despite the compl...

2001
Jonathan Tennyson Steven Miller

Since the original laboratory detection of an H3 + spectrum 20 years ago, the search has been on for astronomical observations of this important and fundamental molecular ion. Successful detection of H3 + in gas-giant planets, supernova ejecta and the interstellar medium as well as the prospects for future observations are discussed. The role H3 + has in determining the atmospheric structure of...

2005
Rui Luo

By using Laplace transformation we developed an approximate solution to describe neutrino oscillation probabilities in arbitrary density matter. We show that this approximation solution is valid when matter potential V satisfy V < ∆m/2E and ∫ V L < 1, where L is the length of the neutrino oscillation . Thus, the formula is useful for propagation of the solar or supernova neutrinos with terrestr...

2010
Basudeb Dasgupta

Neutrinos emitted from a supernova encode useful information about neutrino physics and astrophysics. Interpreting the neutrino signal depends crucially on understanding neutrino production, flavor mixing during propagation, and detection. In this talk, we review the physics potential of a SN neutrino observation.

2006
Natalia V. Kuznetsova Brian M. Connolly

This paper presents a novel method for determining the probability that a supernova candidate belongs to a known supernova type (such as Ia, Ibc, IIL, etc.), using its photometric information alone. It is validated with Monte Carlo, and both spaceand groundbased data. We examine the application of the method to well-sampled as well as poorly sampled supernova light curves and investigate to wha...

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