Search Results - "Steffen, J H"
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Search for axionlike particles using a variable-baseline photon-regeneration technique
Published in Physical review letters (29-02-2008)“…We report the first results of the GammeV experiment, a search for milli-eV mass particles with axionlike couplings to two photons. The search is performed…”
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Laboratory constraints on chameleon dark energy and power-law fields
Published in Physical review letters (28-12-2010)“…We report results from a search for chameleon particles created via photon-chameleon oscillations within a magnetic field. This experiment is sensitive to a…”
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3
Search for chameleon particles using a photon-regeneration technique
Published in Physical review letters (23-01-2009)“…We report the first results from the GammeV search for chameleon particles, which may be created via photon-photon interactions within a strong magnetic field…”
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4
An analysis of the transit times of TrES-1b
Published in Monthly notices of the Royal Astronomical Society. Letters (01-11-2005)“…The presence of a second planet in a known, transiting-planet system will cause the time between transits to vary. These variations can be used to constrain…”
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A limit on the presence of Earth-mass planets around a Sun-like star
Published in Monthly notices of the Royal Astronomical Society (01-01-2007)“…We present a combined analysis of all publicly available visible Hubble Space Telescope observations of transits of the planet HD 209458b. We derive the times…”
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6
Biocompatible surfaces by immobilization of heparin on diamond-like carbon films deposited on various substrates
Published in Surface and interface analysis (01-06-2000)“…Although graphitic carbon has been known and used as a biomaterial for a very long time, the excellent biocompatibility of diamond‐like carbon (DLC) films has…”
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The architecture of the hierarchical triple star KOI 928 from eclipse timing variations seen in Kepler photometry
Published in Monthly notices of the Royal Astronomical Society. Letters (01-10-2011)“…ABSTRACT We present a hierarchical triple star system (KIC 9140402) where a low‐mass eclipsing binary orbits a more massive third star. The orbital period of…”
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Displacement energy threshold for Ne+ irradiation of graphite
Published in Physical review letters (16-03-1992)Get full text
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Mass Determinations of the Three Mini-Neptunes Transiting TOI-125
Published in Monthly notices of the Royal Astronomical Society (2020)“…The Transiting Exoplanet Survey Satellite, TESS, is currently carrying out an all-sky search for small planets transiting bright stars. In the first year of…”
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Structural and functional analysis of aquaporin-2 mutants involved in nephrogenic diabetes insipidus
Published in Scientific reports (06-09-2023)“…Aquaporins are water channels found in the cell membrane, where they allow the passage of water molecules in and out of the cells. In the kidney collecting…”
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11
Mass determinations of the three mini-Neptunes transiting TOI-125
Published 23-01-2020“…The Transiting Exoplanet Survey Satellite, TESS, is currently carrying out an all-sky search for small planets transiting bright stars. In the first year of…”
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Auger-electron-spectroscopy analysis of chemical states in ion-beam-deposited carbon layers on graphite
Published in Physical review. B, Condensed matter (15-08-1991)Get full text
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13
Constraining chameleon field theories using the GammeV afterglow experiments
Published 19-11-2009“…Phys.Rev.D81:015013,2010 The GammeV experiment has constrained the couplings of chameleon scalar fields to matter and photons. Here we present a detailed…”
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14
Ion-beam-induced crystallization of carbon-implanted silicon studied by auger electron spectroscopy
Published in Surface and interface analysis (01-10-1998)“…The influence of high‐energy Si+ irradiation on carbon‐implanted silicon at low temperature was studied. C+ Ions of kinetic energy 25 keV were implanted into…”
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15
Laboratory Constraints on Chameleon Dark Energy and Power-Law Fields
Published in Physical review letters (31-12-2010)“…We report results from a search for chameleon particles created via photon-chameleon oscillations within a magnetic field. This experiment is sensitive to a…”
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16
The climate of HD 189733b from fourteen transits and eclipses measured by Spitzer
Published 26-07-2010“…Astrophys.J.721:1861-1877,2010 We present observations of seven transits and seven eclipses of the transiting planet system HD 189733 taken with Spitzer IRAC…”
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17
Ion beam synthesis by tungsten-implantation into 6H-silicon carbide
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (01-05-1996)“…Synthesis of a highly conductive surface layer on 6H-silicon carbide was achieved by high-dose, room temperature implantation of tungsten at 200 keV…”
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Kepler-62: A five-planet system with planets of 1.4 and 1.6 Earth radii in the Habitable Zone
Published 27-04-2013“…Science Express / http://www.sciencemag.org/content/early/recent / 18 April 2013 / Page 1/ 10.1126/science.1234702 We present the detection of five planets --…”
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Journal Article -
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A search for chameleon particles using a photon regeneration technique
Published 02-02-2009“…Phys.Rev.Lett.102:030402,2009 We report the first results from the GammeV search for chameleon particles, which may be created via photon-photon interactions…”
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20
The architecture of the hierarchical triple star KOI 928 from eclipse timing variations seen in Kepler photometry
Published 22-06-2011“…We present a hierarchical triple star system (KIC 9140402) where a low mass eclipsing binary orbits a more massive third star. The orbital period of the binary…”
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Journal Article