activity
19972010
most citedNew Measurement of the Cosmic-Ray Positron Fraction from 5 to 15 GeV

219 citations · 478 across the 8 of their papers we have counts for

collaborators

8 papers

astro-ph.CO2010★ 10 cited

Reducing Zero-point Systematics in Dark Energy Supernova Experiments

L. Faccioli, A. G. Kim, R. Miquel +17

We study the effect of filter zero-point uncertainties on future supernova dark energy missions. Fitting for calibration parameters using simultaneous analysis of all Type Ia super…

astro-ph2005

Probing Dark Energy via Weak Gravitational Lensing with the SuperNova Acceleration Probe (SNAP)

SNAP Collaboration

SNAP is a candidate for the Joint Dark Energy Mission (JDEM) that seeks to place constraints on the dark energy using two distinct methods. The first, Type Ia SN, is discussed in a…

astro-ph2004★ 219 cited

New Measurement of the Cosmic-Ray Positron Fraction from 5 to 15 GeV

J. J. Beatty, A. Bhattacharyya, C. Bower +12

We present a new measurement of the cosmic-ray positron fraction at energies between 5 and 15 GeV with the balloon-borne HEAT-pbar instrument in the spring of 2000. The data presen…

astro-ph2002★ 2 cited

SNAP Near Infrared Detectors

G. Tarle

The SuperNova/Acceleration Probe (SNAP) will measure precisely the cosmological expansion history over both the acceleration and deceleration epochs and thereby constrain the natur…

astro-ph2001★ 81 cited

Measurement of the Cosmic-Ray Antiproton to Proton Abundance Ratio between 4 and 50 GeV

A. S. Beach, J. J. Beatty, A. Bhattacharyya +13

We present a new measurement of the antiproton to proton abundance ratio, pbar/p, in the cosmic radiation. The HEAT-pbar instrument, a balloon borne magnet spectrometer with precis…

hep-ex2000★ 19 cited

Energy Spectra, Altitude Profiles and Charge Ratios of Atmospheric Muons

S. Coutu, J. J. Beatty, M. A. DuVernois +15

We present a new measurement of air shower muons made during atmospheric ascent of the High Energy Antimatter Telescope balloon experiment. The muon charge ratio mu+ / mu- is prese…