ar X iv : a st ro - p h / 03 06 57 5 v 1 2 7 Ju n 20 03 OCU - HEP 2003 - 01 Cosmic - Ray Detection System using Internet
نویسندگان
چکیده
A cosmic ray detection system, consisting of standardized detector stations connected through the Internet, is described. The system can be used for detecting air showers that arrive over a wide area with correlated time. The data at each site are exchanged in (quasi) real time, which makes the system suitable for displaying cosmic ray arrivals at museums and schools.
منابع مشابه
ar X iv : a st ro - p h / 03 06 45 9 v 1 2 3 Ju n 20 03 Extinction by grey dust in the intergalactic medium
Condensation in the outer regions of decaying supernovae is an efficient source of dust with grain size up to more than 1µm. The largest grains leave the parent galaxy, thus forming " grey " intergalactic dust, which can explain the observed dimming of light from distant supernovae without invoking cosmic acceleration.
متن کاملar X iv : a st ro - p h / 03 06 44 3 v 1 2 3 Ju n 20 03 MAGNETIC FIELDS IN COSMOLOGY
Different mechanisms which may possibly explain existence of magnetic fields on astronomically large scales are described. A recently suggested model of magnetic fields generation slightly before hydrogen recombination is discussed in more detail.
متن کاملar X iv : a st ro - p h / 03 02 30 7 v 1 1 6 Fe b 20 03 The Local Interstellar Spectrum of Cosmic Ray Electrons . Direct measurements
The local interstellar spectrum of cosmic ray electrons is derived by correcting the data from balloon and space measurements for the solar modulation effect. The resulting spectrum, after the renormalization of some experimental data set, can be fitted with a single power law from about 3 GeV to 2 TeV with spectral index γ = 3.42± 0.02. On the other hand, at low energies the measurements by CA...
متن کاملar X iv : a st ro - p h / 03 06 28 4 v 2 1 4 Ju n 20 03 Delayed soft X - ray emission lines in the afterglow of GRB 030227
Strong, delayed X-ray line emission is detected in the afterglow of GRB 030227, appearing near the end of the XMM-Newton observation, nearly twenty hours after the burst. The observed flux in the lines, not simply the equivalent width, sharply increases from an undetectable level (< 1.7 × 10 −14 erg cm −2 s −1 , 3σ) to 4.1 +0.9 −1.0 × 10 −14 erg cm −2 s −1 in the final 9.7 ks. The line emission...
متن کاملar X iv : a st ro - p h / 03 06 25 3 v 1 1 2 Ju n 20 03 Is there a Gravitational Thomas Precession ?
Gravitational Thomas Precession ( GTP ) is the name given to Thomas Precession when the acceleration is caused by a gravitational force field. The contribution of the GTP to the the anomalous perihelion advance of the orbit of Mercury is here estimated at ̇̃ ωGTP = 21 · 49 [ 1 + ( ~ L · ~ S ) L ] arcsec/century ,where ~ L and ~ S respectively represents the orbital angular momentum and the spin a...
متن کامل