**Preface XI**


Jorge Perez-Peraza and Juan C. Márquez-Adame

Preface

Dear Readers,

**A. Extragalactic Cosmic Rays:**

Mechanisms

Heliopause

4. Cosmic Ray Cradles in the Galaxy

researches crucial for understanding the origin of cosmic rays.

**B. Galactic Cosmic Rays:**

in modern experiments.

which we are far from understanding.

We present you with a set of essays on cosmic rays with a particular focus on galactic and

2. Gamma Ray Bursts: Progenitors, Accretion in the Central Engine, Jet Acceleration

3. Galactic Cosmic Rays and Low Clouds: Possible Reasons for Correlation Reversal

5. Exploration of Solar Cosmic Ray Sources by Means of Particle Energy Spectra

This book contains works on both theoretical principles as well as results from experimental

The editors believe that this book will be interesting to both theorists and scientists working

Interdisciplinarity is a strong theme of this book. We believe that cosmic rays are not sepa‐ rated from other scientific fields but form one of the crucial bases of modern astrophysics especially because the theoretical researches on the origin of cosmic rays are leading to a number of puzzling observations that indicate a much more complex astrophysical scenario,

**Zbigniew Szadkowski**

University of Łódź, Poland

Faculty of Physics and Applied Informatics Department of High-Energy Astrophysics

1. Cosmic Ray Muons as Penetrating Probes to Explore the World Around Us 2. Galactic Cosmic Rays from 1 MeV to 1 GeV as Measured by Voyager beyond the

extragalactic phenomena. The book is divided into two sections related to:

1. Introductory Chapter: Ultrahigh-Energy Cosmic Ray
