The 3-D shaping of NGC 6741: A massive, fast
... surrounded by a sharp low-excitation skin (the ionization front), and embedded in a spherical (radius 0.080 pc), almostneutral, high-density (n(H I) 7 × 103 atoms cm−3 ) halo containing a large fraction of the nebular mass (Mhalo ≥ 0.20 M ). The kinematics, physical conditions and ionic structu ...
... surrounded by a sharp low-excitation skin (the ionization front), and embedded in a spherical (radius 0.080 pc), almostneutral, high-density (n(H I) 7 × 103 atoms cm−3 ) halo containing a large fraction of the nebular mass (Mhalo ≥ 0.20 M ). The kinematics, physical conditions and ionic structu ...
here - Optoelectronics Research Centre
... because of the intensity noise, the clarity of the OCT image can be sacrificed even though much finer axial resolution can be obtained when using this technology. Using a commercial supercontinuum SC450 (Fianium, UK) source, its performance in terms of its interference signal shape and its relative ...
... because of the intensity noise, the clarity of the OCT image can be sacrificed even though much finer axial resolution can be obtained when using this technology. Using a commercial supercontinuum SC450 (Fianium, UK) source, its performance in terms of its interference signal shape and its relative ...
Virtual Cell Learning Objectives Draft (ETC Excerpt)
... 1. The learner should recognize that photosynthesis is a process that occurs within the chloroplasts of a eukaryotic cell. 2. The learner should recognize that photosynthesis is divided into two sets of reactions light reactions and dark reactions. 3. The learner should recognize that the light reac ...
... 1. The learner should recognize that photosynthesis is a process that occurs within the chloroplasts of a eukaryotic cell. 2. The learner should recognize that photosynthesis is divided into two sets of reactions light reactions and dark reactions. 3. The learner should recognize that the light reac ...
Strong Polarized Enhanced Raman Scattering via Optical Tunneling
... Raman spectrum was obtained for ψ ) 90° when the direction of the electric field polarization was perpendicular to the main axis of the nanostructure (Figure 3a). On the other hand, the SERRS signal was minimized when the electric field of the incident laser was at ψ ) 0°, parallel to the nanostruct ...
... Raman spectrum was obtained for ψ ) 90° when the direction of the electric field polarization was perpendicular to the main axis of the nanostructure (Figure 3a). On the other hand, the SERRS signal was minimized when the electric field of the incident laser was at ψ ) 0°, parallel to the nanostruct ...
gerard peter kuiper - National Academy of Sciences
... Medal of the Astronomical Society of France. In Germany following its surrender, Kuiper learned from German scientists details of the new lead sulfide infrared detectors being developed on both sides during the war, and he was impressed by their astronomical possibilities. The American detectors wer ...
... Medal of the Astronomical Society of France. In Germany following its surrender, Kuiper learned from German scientists details of the new lead sulfide infrared detectors being developed on both sides during the war, and he was impressed by their astronomical possibilities. The American detectors wer ...
Using Site Testing Data for Adaptive Optics
... In order to achieve high image quality uniformly over the field of view in the near infrared, NIFROAS employs tomographic wavefront reconstruction. The 50% sky coverage requirement, at the galactic pole is in conjunction with simultaneously meeting the specification on wavefront error. NFIRAOS will ...
... In order to achieve high image quality uniformly over the field of view in the near infrared, NIFROAS employs tomographic wavefront reconstruction. The 50% sky coverage requirement, at the galactic pole is in conjunction with simultaneously meeting the specification on wavefront error. NFIRAOS will ...
Physics of the Interstellar Medium
... the sites of massive star formation, which are optically thick even in the thermal IR regime 11 . The recent development of large-format IR arrays has made it possible to generate high-resolution extinction maps of IR optically thin dark clouds providing a new and accurate tool to determine their la ...
... the sites of massive star formation, which are optically thick even in the thermal IR regime 11 . The recent development of large-format IR arrays has made it possible to generate high-resolution extinction maps of IR optically thin dark clouds providing a new and accurate tool to determine their la ...
High-Time Resolution Astrophysics (HTRA) in FP7
... ● EMCCDs have significant impetus from digital cameras; astronomical applications can push the limits of these devices and motivate the development of new products. ● HTRA is strong in Europe which is the home of the ULTRACAM, OPTIMA and STJ fast photometers. ● HTRA-enabled instruments can promote a ...
... ● EMCCDs have significant impetus from digital cameras; astronomical applications can push the limits of these devices and motivate the development of new products. ● HTRA is strong in Europe which is the home of the ULTRACAM, OPTIMA and STJ fast photometers. ● HTRA-enabled instruments can promote a ...
Strong critical coupling and polaritonic coherent perfect
... active quantum wells) and on the plain, unpatterned quantum well heterostructure, as detailed in Extended Data Figure 1. The proximity of the absorption to the 50% value is very promising for the observation of CPA. As a matter of fact, the experimental points plotted in Figure 2 (c) are the average ...
... active quantum wells) and on the plain, unpatterned quantum well heterostructure, as detailed in Extended Data Figure 1. The proximity of the absorption to the 50% value is very promising for the observation of CPA. As a matter of fact, the experimental points plotted in Figure 2 (c) are the average ...
Kepler-63b: A Giant Planet in a Polar Orbit around a Young Sun
... relationship is caused by a physical process or is merely a coincidence, it has an important consequence for the interpretation of spot-crossing anomalies, as pointed out by Winn et al. (2010b) in the context of the HAT-P-11 system. The near-commensurability causes a “stroboscopic” effect in the pat ...
... relationship is caused by a physical process or is merely a coincidence, it has an important consequence for the interpretation of spot-crossing anomalies, as pointed out by Winn et al. (2010b) in the context of the HAT-P-11 system. The near-commensurability causes a “stroboscopic” effect in the pat ...
Physics modules P7 - Higher
... OCR is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge. ...
... OCR is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge. ...
Transmission resonances of electromagnetic wave through metallic
... wave through subwavelength apertures in metallic gratings, which is inspired by the observation of extraordinary optical transmission through a metallic film with an array of subwavelength holes [1−9]. EM transmissions of the metallic gratings at particular frequencies are seen much larger than the ...
... wave through subwavelength apertures in metallic gratings, which is inspired by the observation of extraordinary optical transmission through a metallic film with an array of subwavelength holes [1−9]. EM transmissions of the metallic gratings at particular frequencies are seen much larger than the ...
G030086-00 - DCC
... – Close to ISCO the orbits are relativistic and difficult to make templates (still lower effective frequency range for detection) – L.F. sensitivity necessary to trigger with optimal filters ...
... – Close to ISCO the orbits are relativistic and difficult to make templates (still lower effective frequency range for detection) – L.F. sensitivity necessary to trigger with optimal filters ...
Alkali-metal atoms in laser fields: optical pumping, coherent
... Alkali metals have played an important role in optical and atomic physics from the very beginning. This thesis deals with three aspects and applications of alkali-metal atoms, in particular rubidium (Rb). Optical pumping changes both the amplitudes and the center positions of the absorption profiles ...
... Alkali metals have played an important role in optical and atomic physics from the very beginning. This thesis deals with three aspects and applications of alkali-metal atoms, in particular rubidium (Rb). Optical pumping changes both the amplitudes and the center positions of the absorption profiles ...
preprint, pdf version - LESIA
... probe their atmospheres or place limits on their existence down to the nanobar level. In addition, occultations can eventually lead to the observation or discovery of close binary companions, satellites, or debris around the central body. For size determinations, occultations are far more suitable t ...
... probe their atmospheres or place limits on their existence down to the nanobar level. In addition, occultations can eventually lead to the observation or discovery of close binary companions, satellites, or debris around the central body. For size determinations, occultations are far more suitable t ...
AGN host galaxies at redshift z ≈ 0.7: peculiar or not?
... was performed ∼ 6 months later than the main part, which was spread over only three weeks of observations. The tiles with delayed imaging (no. 29, 46, 75 . . . 80; see Heymans et al. 2008 for details) show significant deviations of their PSFs from those of the data taken earlier and these tiles were ...
... was performed ∼ 6 months later than the main part, which was spread over only three weeks of observations. The tiles with delayed imaging (no. 29, 46, 75 . . . 80; see Heymans et al. 2008 for details) show significant deviations of their PSFs from those of the data taken earlier and these tiles were ...
幻灯片 1
... 1. i) Calculate the exciton Rydberg and Bohr radius for GaAs, which has r =12.8, me* = 0.067 m0 and mh*=0.2m0. ii) GaAs has a cubic crystal structure with a unit cell size of 0.56 nm. Estimate the number of unit cells contained within the orbit of the n=1 exciton. Hence justify the validity of assu ...
... 1. i) Calculate the exciton Rydberg and Bohr radius for GaAs, which has r =12.8, me* = 0.067 m0 and mh*=0.2m0. ii) GaAs has a cubic crystal structure with a unit cell size of 0.56 nm. Estimate the number of unit cells contained within the orbit of the n=1 exciton. Hence justify the validity of assu ...
Frenkel excitons
... 1. i) Calculate the exciton Rydberg and Bohr radius for GaAs, which has r =12.8, me* = 0.067 m0 and mh*=0.2m0. ii) GaAs has a cubic crystal structure with a unit cell size of 0.56 nm. Estimate the number of unit cells contained within the orbit of the n=1 exciton. Hence justify the validity of assu ...
... 1. i) Calculate the exciton Rydberg and Bohr radius for GaAs, which has r =12.8, me* = 0.067 m0 and mh*=0.2m0. ii) GaAs has a cubic crystal structure with a unit cell size of 0.56 nm. Estimate the number of unit cells contained within the orbit of the n=1 exciton. Hence justify the validity of assu ...
ExoOrg_NAI
... from the giant planets’ region where conditions differed greatly, and for which even the most unfractionated meteorites (CI chondrites) provide an uncertain analog. This source, and its potential astrobiological significance, can be evaluated by measuring the organic composition of comets. The propo ...
... from the giant planets’ region where conditions differed greatly, and for which even the most unfractionated meteorites (CI chondrites) provide an uncertain analog. This source, and its potential astrobiological significance, can be evaluated by measuring the organic composition of comets. The propo ...
The MORGANA model for the rise of galaxies and active nuclei
... merger trees of dark matter (DM) haloes and a model for the evolution of substructure within the haloes, the complex physics of baryons is modelled with a set of state-of-the-art models that describe the mass, metal and energy flows between the various components (baryonic halo, bulge, disc) and pha ...
... merger trees of dark matter (DM) haloes and a model for the evolution of substructure within the haloes, the complex physics of baryons is modelled with a set of state-of-the-art models that describe the mass, metal and energy flows between the various components (baryonic halo, bulge, disc) and pha ...
Possibility for albedo estimation of exomoons: Why should we care
... drop caused by the moon’s occultation and the estimated photon noise of next generation missions with 5 σ confidence. We found that albedo estimation by this method is not feasible for moons of solar-like stars, but small M dwarfs are better candidates for such measurements. Our calculations in the ...
... drop caused by the moon’s occultation and the estimated photon noise of next generation missions with 5 σ confidence. We found that albedo estimation by this method is not feasible for moons of solar-like stars, but small M dwarfs are better candidates for such measurements. Our calculations in the ...
Astronomical spectroscopy
Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light, which radiates from stars and other hot celestial objects. Spectroscopy can be used to derive many properties of distant stars and galaxies, such as their chemical composition, temperature, density, mass, distance, luminosity, and relative motion using Doppler shift measurements.