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The trispectrum of the 4 year COBE DMR data

ASTROPHYSICAL JOURNAL 563:2 (2001) L99-L102

Authors:

M Kunz, AJ Banday, PG Castro, PG Ferreira, KM Górski
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From the time-ordered data to the Maximum-Likelihood temperature maps of the Cosmic Microwave Backgorund anisotropy

ArXiv astro-ph/0012418 (2000)

Authors:

R Stompor, A Balbi, J Borrill, P Ferreira, S Hanany, A Jaffe, A Lee, S Oh, B Rabii, P Richards, G Smoot, C Winant, J-HP Wu

Abstract:

We review selected methods of the Cosmic Microwave Background data analysis appropriate for the analysis of the largest currently available data sets. We focus on techniques of the time-ordered data manipulation and map making algorithms based on the maximum-likelihood approach. The presented methods have been applied to the MAXIMA data analysis (Hanany et al 2000) and the description of the algorithms is illustrated with the examples drawn from that experience. The more extensive presentation of the here-mentioned issues will be given in the forthcoming paper (Stompor et al 2001).
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Constraints on Cosmological Parameters from MAXIMA-1

The Astrophysical Journal American Astronomical Society 545:1 (2000) l1-l4

Authors:

A Balbi, P Ade, J Bock, J Borrill, A Boscaleri, P De Bernardis, PG Ferreira, S Hanany, V Hristov, AH Jaffe, AT Lee, S Oh, E Pascale, B Rabii, PL Richards, GF Smoot, R Stompor, CD Winant, JHP Wu
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MAXIMA-1: A Measurement of the Cosmic Microwave Background Anisotropy on Angular Scales of 10'-5°

The Astrophysical Journal American Astronomical Society 545:1 (2000) l5-l9

Authors:

S Hanany, P Ade, A Balbi, J Bock, J Borrill, A Boscaleri, P de Bernardis, PG Ferreira, VV Hristov, AH Jaffe, AE Lange, AT Lee, PD Mauskopf, CB Netterfield, S Oh, E Pascale, B Rabii, PL Richards, GF Smoot, R Stompor, CD Winant, JHP Wu
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An aging study of double GEMs in Ar-CO2

IEEE Nuclear Science Symposium and Medical Imaging Conference 1 (2000)

Authors:

J Miyamoto, I Shipsey

Abstract:

An aging study was performed using double OEMs and a printed circuit readout board (PCB) with an intense X-ray source in an ultra clean Argon-CO2 gas environment. The detector was irradiated continuously for about 1000 hours without interruption until a large amount of charge was accumulated. A single-wire chamber served as a monitoring device to check the beam and ambient conditions and gas chromatography was used to ensure no hydrocarbon materials were present in the gas mixture. The detector could withstand more than 25 mC/mm2 with only a slight sign of aging and the charge accumulated is presumably sufficient to conduct large-scale and long-term experiments in intense radiation fields.