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Chapter and Conference Paper
Observations of a Complete Sample of Relativistic Sources in Active Galactic Nuclei
We discuss two independent complete samples of radio sources for which extensive VLBI observations exist. The first sample is based on the Jodrell Bank 966 MHz survey and comprises 30 radio lobe dominated sour...
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Chapter and Conference Paper
Synchrotron Emission from Shock Waves in Active Galactic Nuclei
The origin of the sharp near infrared cutoff in the continuous energy distribution of many compact non-thermal sources (BL Lacs, OVVs, red quasars and certain jets) is considered under the assumption that part...
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Chapter and Conference Paper
Digital photometry of the jet in M 87
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Chapter and Conference Paper
Encounters of Disk-Galaxies in Small Groups and the Stimulation of Activity in Galaxies
The relationship between galaxy encounters and activity of galaxies, particularly in small groups, has been studied in model calculations. We have shown the important role of the interstellar gas which can dis...
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Chapter and Conference Paper
Ring Formation in Viscous Differentially Rotating Galactic Disks
Ringlike structures (in H α, CO and radio continuum) in central galactic regions have been observed in a number of objects. They seem to be a basic feature of galactic structure (for references see ...
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Chapter
Source Composition, Sites of Origin and Acceleration of Cosmic Rays
The source composition of cosmic rays is deduced from the observed composition above the atmosphere by propagation (or nuclear transport) calculations. These calculations make corrections for the nuclear spallati...
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Chapter and Conference Paper
How to Transport Angular Momentum in the Inner ≈ 150 Parsec of Galaxies
We describe an accretion disk model for the dynamics of gas in the central regions of galaxies. We apply this model to our Galaxy and determine the fundamental properties of the disk as well as the unprojected...
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Chapter and Conference Paper
Shock Waves Of The Large-Scale Structure Formation In The Universe
Simulations of structure formation in the Universe predict accretion shock waves at the boundaries of the large-scale structures as sheets, filaments, and clusters of galaxies. If magnetic fields are present a...
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Chapter
Galactic Clues About the High-Energy Processes in BL Lac (AGN) Jets
Active galactic nuclei (AGN) jets are the source of many outstanding puzzles in astrophysics. Not least of these is the question of how these jets are formed, and how they are related to the central massive bl...
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Chapter
Cosmic Ray Interactions in the Galactic Center Region
EGRET data on the Gamma ray emission from the inner Galaxy have shown a rather flat spectrum. This spectrum extends to about 50 GeV in photon energy. It is usually assumed that these gamma-rays arise from the ...
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Article
Review: Experiments in Fundamental Physics Scheduled and in Development for the ISS
This is a review of those experiments in the area of Fundamental Physics that are either approved by ESA and NASA, or are currently under development, which are to be performed in the microgravity environment ...
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Article
Detection and imaging of atmospheric radio flashes from cosmic ray air showers
The origin of ultrahigh-energy cosmic rays is one of the most profound mysteries in high-energy astrophysics. No standard supernovae, pulsars or black holes can accelerate particles to such enormous energies, ...
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Chapter and Conference Paper
Relativistic Jets in Active Galactic Nuclei: Importance of Magnetic Fields
We present a theoretical model for powering relativistic jets in Active Galactic Nuclei (AGN) from the accretion flow power, which can be increased by the power coming from the spindown of the black hole (BH)....
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Article
Open AccessSearch for patterns by combining cosmic-ray energy and arrival directions at the Pierre Auger Observatory
Energy-dependent patterns in the arrival directions of cosmic rays are searched for using data of the Pierre Auger Observatory. We investigate local regions around the highest-energy cosmic rays with ...
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Article
Erratum to: Ultra high energy photons and neutrinos with JEM-EUSO
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Article
Erratum to: Performances of JEM-EUSO: angular reconstruction
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Article
Space experiment TUS on board the Lomonosov satellite as pathfinder of JEM-EUSO
Space-based detectors for the study of extreme energy cosmic rays (EECR) are being prepared as a promising new method for detecting highest energy cosmic rays. A pioneering space device – the “tracking ultravi...
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Article
The infrared camera onboard JEM-EUSO
The Extreme Universe Space Observatory on the Japanese Experiment Module (JEM-EUSO) on board the International Space Station (ISS) is the first space-based mission worldwide in the field of Ultra High-Energy C...
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Article
The atmospheric monitoring system of the JEM-EUSO instrument
The JEM-EUSO telescope will detect Ultra-High Energy Cosmic Rays (UHECRs) from space, detecting the UV Fluorescence Light produced by Extensive Air Showers (EAS) induced by the interaction of the cosmic rays w...
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Article
Performances of JEM–EUSO: energy and X max reconstruction
The Extreme Universe Space Observatory (EUSO) on–board the Japanese Experimental Module (JEM) of the International Space Station aims at the detection of ultra high energy cosmic rays from space. The mission c...
