Search Results - "Rieger, Frank"

An Introduction to Particle Acceleration in Shearing Flows by Rieger, Frank

“…Shear flows are ubiquitously present in space and astrophysical plasmas. This paper highlights the central idea of the non-thermal acceleration of charged…”
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Radio Galaxies at VHE Energies by Rieger, Frank, Levinson, Amir

“…Radio Galaxies have by now emerged as a new γ-ray emitting source class on the extragalactic sky. Given their remarkable observed characteristics, such as…”
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Particle Acceleration in Relativistic Shearing Flows: Energy Spectrum by Rieger, Frank M., Duffy, Peter

“…We consider the acceleration of charged particles in relativistic shearing flows, with Lorentz factor up to Γ 0 ∼ 20. We present numerical solutions to the…”
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Gap-type Particle Acceleration in the Magnetospheres of Rotating Supermassive Black Holes by Katsoulakos, Grigorios, Rieger, Frank M.

“…The detection of rapidly variable gamma-ray emission in active galactic nuclei has generated renewed interest in magnetospheric particle acceleration and…”
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Magnetospheric Gamma-Ray Emission in Active Galactic Nuclei by Katsoulakos, Grigorios, Rieger, Frank M.

“…The rapidly variable, very high-energy (VHE) gamma-ray emission from active galactic nuclei (AGNs) has been frequently associated with non-thermal processes…”
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The Role of Stochastic Fermi-type Particle Acceleration in the Inner Jets of Active Galactic Nuclei by Wang, Jieshuang, Rieger, Frank M., Mizuno, Yosuke

“…High-resolution radio observations of nearby active galactic nuclei have revealed extended, limb-brightened structures in their inner jets. This ties in with…”
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Gamma-Ray Astrophysics in the Time Domain by Rieger, Frank

“…The last few years have seen gamma-ray astronomy maturing and advancing in the field of time-domain astronomy, utilizing source variability on timescales over…”
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Active Galactic Nuclei as Potential Sources of Ultra-High Energy Cosmic Rays by Rieger, Frank M.

“…Active Galactic Nuclei (AGNs) and their relativistic jets belong to the most promising class of ultra-high-energy cosmic ray (UHECR) accelerators. This compact…”
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BMP7 gene transfer via gold nanoparticles into stroma inhibits corneal fibrosis in vivo by Tandon, Ashish, Sharma, Ajay, Rodier, Jason T, Klibanov, Alexander M, Rieger, Frank G, Mohan, Rajiv R

“…This study examined the effects of BMP7 gene transfer on corneal wound healing and fibrosis inhibition in vivo using a rabbit model. Corneal haze in rabbits…”
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Particle acceleration in shearing flows: the self-generation of turbulent spine-sheath structures in relativistic magnetohydrodynamic jet simulations by Wang, Jie-Shuang, Reville, Brian, Mizuno, Yosuke, Rieger, Frank M, Aharonian, Felix A

“…X-ray observations of kiloparsec-scale extragalactic jets favour a synchrotron origin. The short cooling times of the emitting electrons require a distributed…”
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Particle acceleration in shearing flows: the case for large-scale jets by Wang, Jie-Shuang, Reville, Brian, Liu, Ruo-Yu, Rieger, Frank M, Aharonian, Felix A

“…ABSTRACT X-ray observations of kiloparsec-scale jets indicate that a synchrotron origin of the sustained non-thermal emission is likely. This requires…”
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Do radiative losses determine the characteristic emission of the blazar Mkn 421? by Baheeja, C, Sahayanathan, S, Rieger, Frank M, Jagan, Sitha K, Ravikumar, C D

“…ABSTRACT The radiative loss interpretation for the broken power-law spectra of blazars is often questioned since the difference between the indices does not…”
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Studying X-ray spectra from large-scale jets of FR II radio galaxies: application of shear particle acceleration by He, Jia-Chun, Sun, Xiao-Na, Wang, Jie-Shuang, Rieger, Frank M, Liu, Ruo-Yu, Liang, En-Wei

“…ABSTRACT Shear particle acceleration is a promising candidate for the origin of extended high-energy emission in extra-galactic jets. In this paper, we explore…”
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Convex X-ray spectra of PKS 2155-304 and constraints on the minimum electron energy by Jagan, Sitha K, Sahayanathan, S, Rieger, Frank M, Ravikumar, C D

“…ABSTRACT The convex (concave upward) high-energy X-ray spectra of the blazar PKS 2155-304, observed by XMM-Newton, is interpreted as the signature of…”
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On the Geometrical Origin of Periodicity in Blazar-type Sources by Rieger, Frank M

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Epigenetic Modification Prevents Excessive Wound Healing and Scar Formation After Glaucoma Filtration Surgery by Sharma, Ajay, Anumanthan, Govindaraj, Reyes, Marcos, Chen, Huiyi, Brubaker, Jacob W, Siddiqui, Saad, Gupta, Suneel, Rieger, Frank G, Mohan, Rajiv R

“…The purpose of this study was to determine the efficacy of suberoylanilide hydroxamic acid (SAHA), a histone deacetylase inhibitor (HDACi), in prevention of…”
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Fermi acceleration in astrophysical jets by Rieger, Frank M, Bosch-Ramon, Valenti, Duffy, Peter

“…Issue Title: The Multi-Messenger Approach to High-Energy Gamma-Ray Sources: Third Workshop on the Nature of Unidentified High-Energy Sources We consider the…”
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Polyethylenimine-conjugated gold nanoparticles: Gene transfer potential and low toxicity in the cornea by Sharma, Ajay, PhD, Tandon, Ashish, PhD, Tovey, Jonathan C.K., MD, Gupta, Rangan, PhD, Robertson, J. David, PhD, Fortune, Jennifer A., PhD, Klibanov, Alexander M., PhD, Cowden, John W., MD, Rieger, Frank G., MD, Mohan, Rajiv R., PhD

“…Abstract This study examined the gene transfer efficiency and toxicity of 2-kDa polyethylenimine conjugated to gold nanoparticles (PEI2-GNPs) in the human…”
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Shear Acceleration in Relativistic Astrophysical Jets by Rieger, Frank M, Duffy, Peter

“…We consider the acceleration of energetic particles by a velocity shear in the relativistic background flow containing scattering centers. Three possible…”
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TeV astronomy by Rieger, Frank M., Oña-Wilhelmi, Emma de, Aharonian, Felix A.

“…With the successful realization of the current-generation of ground-based detectors, TeV Astronomy has entered into a new era. We review recent advances in VHE…”
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