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Info
Ingreso
al Posgrado Conjunto en Ciencias
Matemáticas en Febrero de 2012
Programa de Maestría en Ciencias en el área de Física: nivel de COMPETENCIA INTERNACIONAL del
PNPC
Programa de Doctorado en Ciencias en el área de Física: nivel CONSOLIDADO del PNPC
Programa de Maestría en Ciencias en el área de Matemáticas: nivel de
COMPETENCIA INTERNACIONAL del
PNPC
Programa de Doctorado en Ciencias en el área de Matemáticas: nivel CONSOLIDADO
del PNPC
Proceso de ingreso al programa de Mastría en Ciencias en el área de Física en marzo de 2012.
Mayores informes: (443) 322 3500, ext. 4140, 4120
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Figure of the month
KASCADE-Grande is an air-shower observatory devoted to the detection of
cosmic rays with energies in the range of $10^{16}$ and $10^{18}$ eV. This
energy region is of particular interest for the cosmic ray astrophysics,
since it is the place where several models predict the existence of a
galactic- extragalactic transition in the cosmic ray spectrum and the
presence of a break in the flux of its heavy component. The detection of
these features requires detailed and simultaneous measurements of the
energy and composition of cosmic rays with sufficient statistics. This kind
of studies are possible for the first time in KASCADE-Grande due to the
accurate measurements of several air-shower observables, i.e., the number
of charged particle, electrons and muons in the shower, using the different
detector systems of the observatory.
By classifying the detected air showers into electron-poor and electron-
rich events on the basis of the charged over muon number ratio, the
corresponding energy spectra of the light (electron-rich) and heavy
(electron-poor) components of cosmic rays in the interval $10^{16}-
10^{18}$ eV were obtained (see figure). It was discovered that the energy
spectrum of the heavy component shows a knee-like structure around 90 PeV.
This feature is responsible for a steepening recently observed by the
KASCADE-Grande experiment in the all-particle energy spectrum.
Dr. J.C. Arteaga-Velazquez, researcher of the IFM, worked on the
development of one of these techniques to reconstruct the light and heavy
spectra of cosmic rays. Results were published in PRL 107, 171104 (2011).
arXiv:1107.5885v2 [astro-ph].
[Previous nice results]
[Noticias y resultados]
[Some of our posters ]
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Instituto de Física y Matemáticas,
Universidad Michoacana de San Nicolás de Hidalgo. Edificio C-3, Cd. Universitaria.
C. P. 58040 Morelia, Michoacán, México.
Teléfonos: +52 (443) 322 3500, ext. 4140
--> Directorio del IFM
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