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The Pierre Auger Collaboration
The Pierre Auger Collaboration has reported evidence for anisotropies in the arrival directions of cosmic rays with energies larger thanEth = 55 EeV. There is a correlation above the isotropic…
Solar wind proton temperature anisotropy: Linear theory and WIND/SWE observations
 We present a comparison between WIND/SWE observations (Kasper et al., 2006) of β∥p and T⊥p/T∥p (where β∥p is the proton parallel beta and T⊥p and T∥p are the perpendicular and parallel proton…
Electron temperature anisotropy constraints in the solar wind
- Š. Štverák, P. Trávnícek, M. Maksimović, E. Marsch, A. Fazakerley, E. Scime
- Physics, Geology
- 1 March 2008
 We have performed a statistical study of a substantial amount of electron data acquired in the solar wind to understand the constraints on electron temperature anisotropy by plasma instabilities…
The Pierre Auger Cosmic Ray Observatory
The Pierre Auger Observatory, located on a vast, high plain in western Argentina, is the world's largest cosmic ray observatory. The objectives of the Observatory are to probe the origin and…
Chromosome numbers and genome size variation in Indian species of Curcuma (Zingiberaceae).
Close evolutionary relationships among some cytotypes are suggested based on the similarity in homoploid genome sizes and geographical grouping, and a new species combination, Curcuma scaposa (Nimmo), is proposed.
Radial evolution of nonthermal electron populations in the low‐latitude solar wind: Helios, Cluster, and Ulysses Observations
- Š. Štverák, M. Maksimović, P. Trávnícek, E. Marsch, A. Fazakerley, E. Scime
- Physics, Geology
- 1 April 2009
 We have performed a statistical study of a substantial amount of solar wind electron velocity distribution functions (eVDFs). In our data set, we combine measurements acquired onboard three…
Genome size variation and species relationships in Hieracium sub-genus Pilosella (Asteraceae) as inferred by flow cytometry.
- J. Suda, A. Krahulcová, P. Trávnícek, Radka Rosenbaumová, Tomáš Peckert, F. Krahulec
- Biology, MedicineAnnals of botany
- 1 November 2007
Significant differences in genome size between hawkweed species from hybridogenous lineages involving the small-genome H. pilosella document the usefulness of nuclear DNA content as a supportive marker for reliable delineation of several of the most problematic taxa in Hieracium sub-genus Pilosella.
Proton thermal energetics in the solar wind: Helios reloaded
 The proton thermal energetics in the slow solar wind between 0.3 and 1 AU is reinvestigated using the Helios 1 and 2 data, complementing a similar analysis for the fast solar wind [Hellinger et…
The Pierre Auger Observatory: Contributions to the 33rd International Cosmic Ray Conference (ICRC 2013)
Contributions of the Pierre Auger Collaboration to the 33rd International Cosmic Ray Conference, Rio de Janeiro, Brazil, July 2013
Measurement of the proton-air cross section at √s=57 TeV with the Pierre Auger Observatory.
- P. Abreu, M. Aglietta, +496 authors M. Ziolkowski
- Physics, MedicinePhysical review letters
- 10 August 2012
We report a measurement of the proton-air cross section for particle production at the center-of-mass energy per nucleon of 57 TeV. This is derived from the distribution of the depths of shower…