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M P Das

Publications and source records attributed to M P Das.

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Status update of MACE Gamma-ray telescope

MACE (Major Atmospheric Cherenkov Experiment), an imaging atmospheric Cherenkov telescope, has recently been installed by the HiGRO (Himalayan Gamma-Ray Observatory) collaboration at Hanle (32.8$^\circ$N, 78.9$^\circ$E, 4270m asl) in Ladakh region of North India. The telescope has a 21m diameter large light collector consisting of indigenously developed 1424 square-shaped diamond turned spherical aluminum mirror facets of size $\sim$ 0.5m$\times$0.5m. MACE is the second largest Cherenkov telescope at the highest altitude in the northern hemisphere. The imaging camera of the telescope consists of 1088 photo-multiplier tubes with a uniform pixel resolution of $\sim 0.125^\circ$ covering a field of view of $\sim$ 4.0$^\circ$ $\times$ 4.0$^\circ$. The main objective of the MACE telescope is to study gamma-ray sources mainly in the unexplored energy region 20 -100 GeV and beyond with high sensitivity. In this paper, we describe the key design features and current status of MACE including results from the trial observations of the telescope.

astro-ph.IM

Remark on "Conductance and Shot Noise for Particles with Exclusion Statistics" by Isakov, Martin, and Ouvry

Isakov, Martin, and Ouvry [PRL 83, 580 (1999)] have recently proposed a fresh approach to the potential observation of fractional exclusion statistics. According to their argument, a clear signature of fractional statistics should exist in the shot noise of a Luttinger fluid, an ideal system postulated by some to underlie the well-founded Laughlin quasiparticle states of the two-dimensional electron gas. We elaborate on some delicate points made by Isakov et al. and reflect upon the relationship between this novel intuitive scheme and certain old issues of first principles.

cond-mat.mes-hall