Search Results - "Ballmoos, Peter Von"
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Imaging the 511 keV Positron Annihilation Sky with COSI
Published in The Astrophysical journal (01-07-2020)“…The balloon-borne Compton Spectrometer and Imager (COSI) had a successful 46-day flight in 2016. The instrument is sensitive to photons in the energy range…”
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Measurement of Galactic 26Al with the Compton Spectrometer and Imager
Published in The Astrophysical journal (01-04-2022)“…The Compton Spectrometer and Imager (COSI) is a balloon-borne compact Compton telescope de-17signed to survey the 0.2–5 MeV sky. COSI’s energy resolution of…”
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Nucleosynthesis in Supernovae
Published in Space science reviews (01-04-2018)“…We present the status and open problems of nucleosynthesis in supernova explosions of both types, responsible for the production of the intermediate mass,…”
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Antimatter in the Universe: constraints from gamma-ray astronomy
Published in Hyperfine interactions (01-10-2014)“…We review gamma-ray observations that constrain antimatter – both baryonic and leptonic - in the Universe. Antimatter is probed through ordinary matter, with…”
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Gamma-ray optics for high-energy astrophysics
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (15-08-2013)“…Gamma-ray astronomy presents an extraordinary scientific potential for the study of the most powerful sources and the most violent events in the Universe…”
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Gamma-ray astrophysics in the MeV range: The ASTROGAM concept and beyond
Published in Experimental astronomy (01-06-2021)“…The energy range between about 100 keV and 1 GeV is of interest for a vast class of astrophysical topics. In particular, (1) it is the missing ingredient for…”
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A DUAL mission for nuclear astrophysics
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (01-11-2010)“…Gamma-ray astronomy presents an extraordinary scientific potential for the study of the most powerful sources and the most violent events in the Universe. In…”
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Interaction of Sulfate Assimilation with Carbon and Nitrogen Metabolism in Lemna minor
Published in Plant physiology (Bethesda) (01-11-2002)“…Cysteine synthesis from sulfide and O-acetyl-L-serine (OAS) is a reaction interconnecting sulfate, nitrogen, and carbon assimilation. Using Lemna minor, we…”
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Expression of a bacterial serine acetyltransferase in transgenic potato plants leads to increased levels of cysteine and glutathione
Published in The Plant journal : for cell and molecular biology (01-05-2000)“…Summary The coding sequence of the wild‐type, cys‐sensitive, cysE gene from Escherichia coli, which encodes an enzyme of the cysteine biosynthetic pathway,…”
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Effect of glucose on assimilatory sulphate reduction in Arabidopsis thaliana roots
Published in Journal of experimental botany (01-07-2003)“…With the aim of analysing the relative importance of sugar supply and nitrogen nutrition for the regulation of sulphate assimilation, the regulation of…”
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Measurement of diffraction efficiencies relevant to crystal lens telescopes
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (01-11-1998)“…The Toulouse/Argonne collaboration is working on a novel detector for gamma-ray astronomy based on a crystal lens that uses Bragg reflection of Ge crystals to…”
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A DUAL mission for nuclear astrophysics
Published in Experimental astronomy (01-10-2012)“…DUAL will study the origin and evolution of the elements and explores new frontiers of physics: extreme energies that drive powerful stellar explosions and…”
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Constraints on the antistar fraction in the Solar system neighborhood from the 10-years Fermi Large Area Telescope gamma-ray source catalog
Published 26-04-2021“…Phys. Rev. D 103, 083016 (2021) It is generally taken for granted that our Universe is free of antimatter objects and domains. This certitude has recently been…”
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Increasing the Glutathione Content in a Chilling-Sensitive Maize Genotype Using Safeners Increased Protection against Chilling-Induced Injury
Published in Plant physiology (Bethesda) (01-11-2001)“…With the aim of analyzing their protective function against chilling-induced injury, the pools of glutathione and its precursors, cysteine (Cys) and…”
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High diffraction efficiency, broadband, diffraction crystals for use in crystal diffraction lenses
Published in Experimental astronomy (01-12-2005)Get full text
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Towards a response function for the COSI anticoincidence system: preliminary results from Geant4 simulations
Published 18-09-2024“…Proc. SPIE 13093, Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray, 130937Y (21 August 2024) The Compton Spectrometer and Imager (COSI) is…”
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Assimilatory Sulfate Reduction in C₃, C₃-C₄, and C₄ Species of Flaveria
Published in Plant physiology (Bethesda) (01-10-2001)“…The activity of the enzymes catalyzing the first two steps of sulfate assimilation, ATP sulfurylase and adenosine 5′-phosphosulfate reductase (APR), are…”
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Multiwavelength focusing with the Sun as gravitational lens
Published in Experimental astronomy (01-12-2005)Get full text
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Performance of the Nuclear Compton Telescope
Published in Experimental astronomy (01-12-2005)Get full text
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CLAIRE: First light for a gamma-ray lens
Published in Experimental astronomy (01-12-2005)“…The objective of the R&D project CLAIRE was to prove the principle of a gamma-ray lens for nuclear astrophysics. CLAIRE's Laue diffraction lens has a diameter…”
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