0000000001331620
AUTHOR
Alberto Blanco
Features of the Energy Spectrum of Cosmic Rays above 2.5×10$^{18}$ eV Using the Pierre Auger Observatory
We report a measurement of the energy spectrum of cosmic rays above $2.5{\times} 10^{18}$ eV based on $215,030$ events. New results are presented: at about $1.3{\times} 10^{19}$ eV, the spectral index changes from $2.51 \pm 0.03 \textrm{ (stat.)} \pm 0.05 \textrm{ (sys.)}$ to $3.05 \pm 0.05 \textrm{ (stat.)}\pm 0.10\textrm{ (sys.)}$, evolving to $5.1\pm0.3\textrm{ (stat.)} \pm 0.1\textrm{ (sys.)}$ beyond $5{\times} 10^{19}$ eV, while no significant dependence of spectral features on the declination is seen in the accessible range. These features of the spectrum can be reproduced in models with energy-dependent mass composition. The energy density in cosmic rays above $5{\times} 10^{18}$ eV …
Inside Back Cover: Rational Chemical Multifunctionalization of Graphene Interface Enhances Targeted Cancer Therapy
A multifunctional graphene conjugate was designed for cancer treatment, as reported by E. Miyako, A. Bianco, and co-workers in their Communication on page 14034. The image depicts the three regalia–crown, orb, and sword–representing triply chemically modified graphene as the strongest approach for cancer therapy. PNICTOCHEM 804110 (G.A.) PID2019-111742-GA-I00 CIDEGENT/2018/001 A multifunctional graphene conjugate was designed for cancer treatment, as reported by E. Miyako, A. Bianco, and co-workers in their Communication on page 14034. The image depicts the three regalia–crown, orb, and sword–representing triply chemically modified graphene as the strongest approach for cancer therapy. Es u…