Abstract
DETERMINATIONS of the flux of low energy, non-solar cosmic rays extend at present down to 5 to 10 MeV for observations above the Earth1. But the interstellar flux of cosmic rays below 1 GeV is highly uncertain because of solar modulation effects. The interstellar differential energy spectrum in the range 10 MeV to 1 GeV is usually deduced from theoretical models, by choosing more or less plausible interplanetary diffusion coefficients that will give a fit to the data. The state of sophistication of these theories is, however, still far from satisfactory, since predicted (low energy) values of the demodulated flux can vary by orders of magnitude among different authors, no experimental data on the interstellar flux having been available until now to help in selecting among different models.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 35-36 |
| Number of pages | 2 |
| Journal | Nature |
| Volume | 248 |
| Issue number | 5443 |
| DOIs | |
| State | Published - Dec 1 1974 |
Fingerprint
All Science Journal Classification (ASJC) codes
- General
Cite this
}
Upper limit on the low energy interstellar cosmic-ray flux. / Meszaros, Peter Istvan.
In: Nature, Vol. 248, No. 5443, 01.12.1974, p. 35-36.Research output: Contribution to journal › Article
TY - JOUR
T1 - Upper limit on the low energy interstellar cosmic-ray flux
AU - Meszaros, Peter Istvan
PY - 1974/12/1
Y1 - 1974/12/1
N2 - DETERMINATIONS of the flux of low energy, non-solar cosmic rays extend at present down to 5 to 10 MeV for observations above the Earth1. But the interstellar flux of cosmic rays below 1 GeV is highly uncertain because of solar modulation effects. The interstellar differential energy spectrum in the range 10 MeV to 1 GeV is usually deduced from theoretical models, by choosing more or less plausible interplanetary diffusion coefficients that will give a fit to the data. The state of sophistication of these theories is, however, still far from satisfactory, since predicted (low energy) values of the demodulated flux can vary by orders of magnitude among different authors, no experimental data on the interstellar flux having been available until now to help in selecting among different models.
AB - DETERMINATIONS of the flux of low energy, non-solar cosmic rays extend at present down to 5 to 10 MeV for observations above the Earth1. But the interstellar flux of cosmic rays below 1 GeV is highly uncertain because of solar modulation effects. The interstellar differential energy spectrum in the range 10 MeV to 1 GeV is usually deduced from theoretical models, by choosing more or less plausible interplanetary diffusion coefficients that will give a fit to the data. The state of sophistication of these theories is, however, still far from satisfactory, since predicted (low energy) values of the demodulated flux can vary by orders of magnitude among different authors, no experimental data on the interstellar flux having been available until now to help in selecting among different models.
UR - http://www.scopus.com/inward/record.url?scp=36949043637&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=36949043637&partnerID=8YFLogxK
U2 - 10.1038/248035a0
DO - 10.1038/248035a0
M3 - Article
AN - SCOPUS:36949043637
VL - 248
SP - 35
EP - 36
JO - Nature
JF - Nature
SN - 0028-0836
IS - 5443
ER -