December 2001 arXiv papers — page 28

F. -Xavier Desert, the Archeops Collaboration

The Cosmic Microwave Background Radiation is the oldest photon radiation that can be observed, having been emitted when the Universe was about 300,000 year old. It is a blackbody at 2.73 K, and is almost perfectly isotropic, the anisotropies being about one part to 100,000. However, these anisotropies, detected by the COBE satellite in 1992, constrain the co

J. -Ch. Hamilton

Archeops is a balloon-borne experiment designed to measure the temperature fluctuations of the CMB on a large region of the sky ($\simeq 30%$) with a high angular resolution (10 arcminutes) and a high sensitivity ($60μK$ per pixel). Archeops will perform a measurement of the CMB anisotropies power spectrum from large angular scales ($\ell\simeq 30$) to small

W. Bednarek

We consider the possibility that the excess of cosmic rays near $\sim 10^{18}$ eV, reported by the AGASA and SUGAR groups from the direction of the Galactic Center, is caused by a young, very fast pulsar in the high density medium. The pulsar accelerates iron nuclei to energies $\sim 10^{20}$ eV, as postulated by the Galactic models for the origin of the hig

Marieke Postma

We show that neutrinos can be produced through standard electroweak interactions in matter with time-dependent density.

Scott M. Ransom

Modified versions of two &#34;standard&#34; pulsar search techniques are presented that allow large-scale searches for pulsations in long duration high-energy data sets using relatively modest amounts of computer time. For small numbers of photons (N_phot <~ 10^4), optimized brute-force epoch folding searches are preferred. For larger numbers of photons, adv

Mallory S. E. Roberts, Bryan M. Gaensler, Roger W. Romani

There is growing evidence that some variable high-energy gamma-ray sources are associated with pulsar wind nebulae. We review the current status of X-ray and radio studies of the sources most likely to be significant emitters above 100 MeV. The assumption of the gamma-radiation arising from synchrotron processes puts a lower limit on the magnetic field and s