Ulysses observations of short-period (≤30 Days) modulation of the galactic cosmic rays
نویسندگان
چکیده
منابع مشابه
Observations of galactic cosmic rays and the anomalous helium during Ulysses passage from the south to the north solar pole
We compare observations of the modulated intensities and spectra of galactic cosmic ray nuclei and anomalous heliumabove 30MeV/nmeasured by theCOsmic andSolar Particle INvestigations (COSPIN) High Energy Telescope (HET) on Ulysses with similar observations from the IMP-8 earthorbiting satellite between September 1994 and August 1995. During this interval Ulysses made a rapid scan of solar latit...
متن کاملSolar Modulation on Galactic Cosmic Rays in the Earth’s Atmosphere
A brief review of solar modulation on galactic cosmic rays in the earth’s atmosphere is presented. The results of the characterizations of the major two events i.e. Galactic Cosmic Rays (GCRs)(measured in counts) and Galactic Solar rays(GSRs) (measured in counts) against time (measured in hour) shows significant variations. It was also observed that the variations of the events are slightly out...
متن کاملGalactic cosmic rays
In this brief review we describe the theory of the origin of Galactic cosmic rays. The concept that interaction near the source is the dominant source of γ-rays, and spallation secondaries seems best suited to explain the EGRET γ-spectrum of the inner Galaxy, the abundances of light elements, the anti-protons and the positrons. Also the chemical abundances seem best described as resulting from ...
متن کاملGalactic modulation of extragalactic cosmic rays: Possible origin of the knee in the cosmic ray spectrum
The existence of the spectral break around ∼ 3 × 10 eV in the cosmic ray spectrum (referred to as the ‘knee’) is one of the biggest questions in cosmic ray astrophysics. At the same time, the origin of cosmic rays above the knee energies (between 10 and 10 eV) is also still unsettled. In this paper, we investigate how the hypothetical extragalactic CRs after modulated by the galactic wind contr...
متن کاملOn the origin of galactic cosmic rays
It is shown that the relativistic jet, emitted from the center of the Galaxy during its activity, possessed power and energy spectrum of accelerated protons sufficient to explain the current cosmic rays distribution in the Galaxy. Proton acceleration takes place on the light cylinder surface formed by the rotation of a massive black hole carring into rotation the radial magnetic field and the m...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 1997
ISSN: 0094-8276
DOI: 10.1029/97gl00129