Miguel at Colorado State University
Y un rayo misterioso hará nido en tu pelo...
I work in experimental particle astrophysics.
I have been a member of the Pierre Auger Collaboration for over a decade now, working on the detection of ultra high energy cosmic rays.
I have recently joined the HAWC Collaboration to build a large gamma ray detector in Mexico.
If you are interested in these fantastic subjects read on!
Experimental work is fun!
the Colorado Alliance for Graduate Education and the Professoriate
AGEP Program at CSU
seeks to significantly increase the number of minority students
that are underrepresented in science, technology, engineering, and mathematics.
Our long term goal is to support minority students to earn their PhDs in science and seek careers as university professors.
I am a member of the
at CSU, and I am more than happy to tell you more about the AGEP Program and about our research in the Physics Department at CSU.
Information about the
AGEP Assistantship Award Program
can be found in the main page of the
the HAWC Observatory
HAWC Collaboration - Feb '10 in Puebla, Mexico
Contribution to HAWC
We will build the 300 bladders (see our first in the top right picture) for the HAWC water Cherenkov detectors here at CSU.
We have also set up a full-size fully-instrumented! water Cherenkov detector at CSU. The absolute best toy ever! Come and play with us.
(Everybody else is!)
We are interested in the cosmic ray anisotropy, the detection of GRBs, and new extended sources of gamma rays among other physics topics.
Lots of fun!
the Pierre Auger Observatory
Auger Collaboration - Sep '96 in San Rafael, Argentina
Ten Years in Pictures
In 10 years the Southern Observatory became a reality!
We deployed over 1600 surface detectors, built 4 fluorescence detectors with 24 fluorescence telescopes,
the Collaboration grew larger, and my hair longer.
(For some strange reason the opposite effect occurred to some of my collaborators' hair... go figure)
Auger Collaboration - Mar '06 in Malargüe, Argentina
our cover of Science
We announced on 8-Nov-2007 that active galactic nuclei are the most likely candidate
for the source of the highest-energy cosmic rays that hit Earth. Using our
Observatory in Argentina, the largest cosmic-ray observatory in the world
found that the sources of the highest-energy particles are not distributed uniformly
across the sky. Instead, our results link the origins of these mysterious particles
to the locations of nearby galaxies that have active nuclei in their centers. The
results appear in the
Nov 9 issue
of the journal Science.
The journal Science listed our result
among all scientific breakthroughs of the year.
The editors of Nature magazine picked it as their
favorite Astronomy story of the year
not published in Nature.
The American Institute of Physics named it as one of the
physics news stories of the year.
Physics World featured our announcement as one of the
best news stories in 2007.
My Contribution in Auger
My two cents on Auger are mainly on two subjects:
atmospheric monitoring and on the reconstruction of hybrid events.
Hybrid events are ultra-high energy comic ray showers seen by both the surface array and the fluorescence detectors.
Atmospheric monitoring is critical for the correct analysis of the fluorescence data and therefore is central to the issue of the GZK cutoff.
While the analysis of the Auger hybrid data extends the lower energy range of Auger (to approx. 1017 eV) and results in events with superior directional, shower energy, and compositional information.
As the flux of cosmic rays rises dramatically with decreasing energy, this analysis results in a large sample of events for physics.
Results of the hybrid reconstruction are used for anisotropy studies (point sources searches from the Galactic Center, for example), composition measurements (setting limits to photon primaries), and for the determination of the primary spectrum (extended to lower energies).
||Miguel Alejandro Mostafá
Department of Physics
Colorado State University
1875 Campus Delivery
Fort Collins, CO 80523-1875
+1 (970) 491-5680
My research is supported by the National Science Foundation.