The Experts below are selected from a list of 291 Experts worldwide ranked by ideXlab platform
Chris Moeckel - One of the best experts on this subject based on the ideXlab platform.
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GLINT Gravitational-wave Laser Interferometry triangle
Experimental Astronomy, 2017Co-Authors: Shafa Aria, Rui Azevedo, Rick Burow, Fiachra Cahill, Lada Ducheckova, Alexa Holroyd, Victor Huarcaya, Emilia Järvelä, Martin Koßagk, Chris MoeckelAbstract:When the universe was roughly one billion years old, supermassive black holes (10(3)-10(6) solar masses) already existed. The occurrence of supermassive black holes on such short time scales are poorly understood in terms of their physical or evolutionary processes. Our current understanding is limited by the lack of observational data due the limits of electromagnetic radiation. Gravitational waves as predicted by the theory of general relativity have provided us with the means to probe deeper into the history of the universe. During the ESA Alpach Summer School of 2015, a group of science and engineering students devised GLINT (Gravitational-wave Laser Interferometry Triangle), a space mission concept capable of measuring gravitational waves emitted by black holes that have formed at the early periods after the big bang. Morespecifically at redshifts of 15 < z < 30 (similar to 0.1 - 0.3 x 10(9) years after the big bang) in the frequency range 0.01 - 1 Hz. GLINT design strain sensitivity of 5 x 10(-24) 1/root Hz will theoretically allow the study of early black holes formations as well as merging events and collapses. The Laser Interferometry, the technology used for measuring gravitational waves, monitors the separation of test masses in free-fall, where a change of separation indicates the passage of a gravitational wave. The test masses will be shielded from disturbing forces in a constellation of three geocentric orbiting satellites.
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GLINT: Gravitational-wave Laser Interferometry triangle
Exper.Astron., 2017Co-Authors: Shafa Aria, Rui Azevedo, Rick Burow, Fiachra Cahill, Lada Ducheckova, Alexa Holroyd, Victor Huarcaya, Emilia Järvelä, Martin Koßagk, Chris MoeckelAbstract:When the universe was roughly one billion years old, supermassive black holes (10$^{3}$-10$^{6}$ solar masses) already existed. The occurrence of supermassive black holes on such short time scales are poorly understood in terms of their physical or evolutionary processes. Our current understanding is limited by the lack of observational data due the limits of electromagnetic radiation. Gravitational waves as predicted by the theory of general relativity have provided us with the means to probe deeper into the history of the universe. During the ESA Alpach Summer School of 2015, a group of science and engineering students devised GLINT (Gravitational-wave Laser Interferometry Triangle), a space mission concept capable of measuring gravitational waves emitted by black holes that have formed at the early periods after the big bang. Morespecifically at redshifts of 15 < z
Guenter K. Krieglstein - One of the best experts on this subject based on the ideXlab platform.
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Signal quality of biometry in silicone oil–filled eyes using partial coherence Laser Interferometry
Journal of cataract and refractive surgery, 2005Co-Authors: Thomas S. Dietlein, Gernot Roessler, Sven Dinslage, Peter Walter, Christoph Lüke, Sigrid Roters, Philipp C. Jacobi, Guenter K. KrieglsteinAbstract:Purpose To assess the practical feasibility and signal quality of axial length measurements by partial coherence Laser Interferometry in silicone oil–filled eyes with previous complicated vitreoretinal surgery. Settings Department of Ophthalmology, University Cologne, Cologne, Germany. Methods Using a Zeiss IOLMaster, axial length measurements and signal-to-noise ratios of optical biometry in silicone oil–filled eyes (n=45) and contralateral eyes without tamponade (n=41) were analyzed. Results Axial length measurements with signal-to-noise ratio ≥2 were feasible in 41 of 45 silicone oil–filled eyes (91%) and 37 of 41 eyes without tamponade (90%). Cataract, central retinal detachment, vitreous hemorrhage, and emulsified oil droplets attached to the intraocular lens were reasons for failure of partial coherence Laser Interferometry. The signal-to-noise ratio of the first 2 measurements was significantly smaller ( P =.04) in silicone-filled eyes (4.4 ± 2.0) than in eyes without tamponade (5.5 ± 3.0). Axial lengths of the oil–filled eye and the contralateral eye showed a significant intraindividual correlation ( P r =0.84). Conclusions Partial coherence Laser Interferometry shows good clinical practicability in silicone oil–filled eyes with previous complicated vitreoretinal surgery. Further studies are needed to assess the reliability of these measurements with regard to postoperative refraction after combined oil removal and cataract surgery.
Thomas S. Dietlein - One of the best experts on this subject based on the ideXlab platform.
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Partial Coherence Laser Interferometry in Highly Myopic versus Emmetropic Eyes
Journal of ophthalmic & vision research, 2014Co-Authors: Gernot Roessler, Yassin Djalali Talab, Thomas S. Dietlein, Sven Dinslage, Niklas Plange, Peter Walter, Babac MazinaniAbstract:Purpose To investigate the reliability of partial coherence Laser Interferometry for optical biometry in highly myopic eyes.
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Signal quality of biometry in silicone oil–filled eyes using partial coherence Laser Interferometry
Journal of cataract and refractive surgery, 2005Co-Authors: Thomas S. Dietlein, Gernot Roessler, Sven Dinslage, Peter Walter, Christoph Lüke, Sigrid Roters, Philipp C. Jacobi, Guenter K. KrieglsteinAbstract:Purpose To assess the practical feasibility and signal quality of axial length measurements by partial coherence Laser Interferometry in silicone oil–filled eyes with previous complicated vitreoretinal surgery. Settings Department of Ophthalmology, University Cologne, Cologne, Germany. Methods Using a Zeiss IOLMaster, axial length measurements and signal-to-noise ratios of optical biometry in silicone oil–filled eyes (n=45) and contralateral eyes without tamponade (n=41) were analyzed. Results Axial length measurements with signal-to-noise ratio ≥2 were feasible in 41 of 45 silicone oil–filled eyes (91%) and 37 of 41 eyes without tamponade (90%). Cataract, central retinal detachment, vitreous hemorrhage, and emulsified oil droplets attached to the intraocular lens were reasons for failure of partial coherence Laser Interferometry. The signal-to-noise ratio of the first 2 measurements was significantly smaller ( P =.04) in silicone-filled eyes (4.4 ± 2.0) than in eyes without tamponade (5.5 ± 3.0). Axial lengths of the oil–filled eye and the contralateral eye showed a significant intraindividual correlation ( P r =0.84). Conclusions Partial coherence Laser Interferometry shows good clinical practicability in silicone oil–filled eyes with previous complicated vitreoretinal surgery. Further studies are needed to assess the reliability of these measurements with regard to postoperative refraction after combined oil removal and cataract surgery.
Shafa Aria - One of the best experts on this subject based on the ideXlab platform.
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GLINT Gravitational-wave Laser Interferometry triangle
Experimental Astronomy, 2017Co-Authors: Shafa Aria, Rui Azevedo, Rick Burow, Fiachra Cahill, Lada Ducheckova, Alexa Holroyd, Victor Huarcaya, Emilia Järvelä, Martin Koßagk, Chris MoeckelAbstract:When the universe was roughly one billion years old, supermassive black holes (10(3)-10(6) solar masses) already existed. The occurrence of supermassive black holes on such short time scales are poorly understood in terms of their physical or evolutionary processes. Our current understanding is limited by the lack of observational data due the limits of electromagnetic radiation. Gravitational waves as predicted by the theory of general relativity have provided us with the means to probe deeper into the history of the universe. During the ESA Alpach Summer School of 2015, a group of science and engineering students devised GLINT (Gravitational-wave Laser Interferometry Triangle), a space mission concept capable of measuring gravitational waves emitted by black holes that have formed at the early periods after the big bang. Morespecifically at redshifts of 15 < z < 30 (similar to 0.1 - 0.3 x 10(9) years after the big bang) in the frequency range 0.01 - 1 Hz. GLINT design strain sensitivity of 5 x 10(-24) 1/root Hz will theoretically allow the study of early black holes formations as well as merging events and collapses. The Laser Interferometry, the technology used for measuring gravitational waves, monitors the separation of test masses in free-fall, where a change of separation indicates the passage of a gravitational wave. The test masses will be shielded from disturbing forces in a constellation of three geocentric orbiting satellites.
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GLINT: Gravitational-wave Laser Interferometry triangle
Exper.Astron., 2017Co-Authors: Shafa Aria, Rui Azevedo, Rick Burow, Fiachra Cahill, Lada Ducheckova, Alexa Holroyd, Victor Huarcaya, Emilia Järvelä, Martin Koßagk, Chris MoeckelAbstract:When the universe was roughly one billion years old, supermassive black holes (10$^{3}$-10$^{6}$ solar masses) already existed. The occurrence of supermassive black holes on such short time scales are poorly understood in terms of their physical or evolutionary processes. Our current understanding is limited by the lack of observational data due the limits of electromagnetic radiation. Gravitational waves as predicted by the theory of general relativity have provided us with the means to probe deeper into the history of the universe. During the ESA Alpach Summer School of 2015, a group of science and engineering students devised GLINT (Gravitational-wave Laser Interferometry Triangle), a space mission concept capable of measuring gravitational waves emitted by black holes that have formed at the early periods after the big bang. Morespecifically at redshifts of 15 < z
Gernot Roessler - One of the best experts on this subject based on the ideXlab platform.
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Partial Coherence Laser Interferometry in Highly Myopic versus Emmetropic Eyes
Journal of ophthalmic & vision research, 2014Co-Authors: Gernot Roessler, Yassin Djalali Talab, Thomas S. Dietlein, Sven Dinslage, Niklas Plange, Peter Walter, Babac MazinaniAbstract:Purpose To investigate the reliability of partial coherence Laser Interferometry for optical biometry in highly myopic eyes.
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Signal quality of biometry in silicone oil–filled eyes using partial coherence Laser Interferometry
Journal of cataract and refractive surgery, 2005Co-Authors: Thomas S. Dietlein, Gernot Roessler, Sven Dinslage, Peter Walter, Christoph Lüke, Sigrid Roters, Philipp C. Jacobi, Guenter K. KrieglsteinAbstract:Purpose To assess the practical feasibility and signal quality of axial length measurements by partial coherence Laser Interferometry in silicone oil–filled eyes with previous complicated vitreoretinal surgery. Settings Department of Ophthalmology, University Cologne, Cologne, Germany. Methods Using a Zeiss IOLMaster, axial length measurements and signal-to-noise ratios of optical biometry in silicone oil–filled eyes (n=45) and contralateral eyes without tamponade (n=41) were analyzed. Results Axial length measurements with signal-to-noise ratio ≥2 were feasible in 41 of 45 silicone oil–filled eyes (91%) and 37 of 41 eyes without tamponade (90%). Cataract, central retinal detachment, vitreous hemorrhage, and emulsified oil droplets attached to the intraocular lens were reasons for failure of partial coherence Laser Interferometry. The signal-to-noise ratio of the first 2 measurements was significantly smaller ( P =.04) in silicone-filled eyes (4.4 ± 2.0) than in eyes without tamponade (5.5 ± 3.0). Axial lengths of the oil–filled eye and the contralateral eye showed a significant intraindividual correlation ( P r =0.84). Conclusions Partial coherence Laser Interferometry shows good clinical practicability in silicone oil–filled eyes with previous complicated vitreoretinal surgery. Further studies are needed to assess the reliability of these measurements with regard to postoperative refraction after combined oil removal and cataract surgery.
