1. A New Component of Cosmic Rays?
ICRC 2011 Beijing
A New Component of
Cosmic Rays?
Anatoly Erlykin (Moscow, Russia) and Arnold Wolfendale (Durham, Uk).

2. Structure in Cosmic Ray Spectra
Structure in Cosmic Ray Spectra. Knee at 3PeV Ankle at 3 EeV There must be more structure, too, due to the discrete nature of CR sources.

3. Data from PAMELA, CREAM and ATIC.
Energy Spectra of Protons and Helium Nucleas
Data from PAMELA, CREAM and ATIC.

4. Spectra for Oxygen, Magnesium and Iron
Data from the summary by Ahn et al (2010). Other nuclei are similar.

5. The values of f30, the ratio of the NC intensity to the total at 30
GeV/ nucleon, for the various elements.
(b) The slopes before and after the ankle are g1and g2 . The lines are drawn for illustration purposes only, as the values for the elements are spaced uniformly.

6. (a) The rigidity at the ankle ( Ra ) for the various elements
(a) The rigidity at the ankle ( Ra ) for the various elements. (b) Sharpness values for the elements. Circles: S from use of our standard technique of the second differential of the ordinate with respect to the abscissa, with an interval of d (logE) = 0.2 (Erlykin and Wolfendale,1997). Stars: S from an alternative method in which S = (g2 - g1)/0.2. The errors are given for this method. Those for the circles are similar. The horizontal lines with the percentages marked are from our random SN model (Erlykin et al., 2003). The model gives spectral profiles from which the S-values are derived.

9. Conclusions:
There is evidence for a ‘New Component’ of CR below about 300GV.
About 25% of the CR energy is in this component.
Mass composition of NC favours refractories ( except for silicon).
Origin: Local Bubble? Important role for OB associations.