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Nonlinear effects in Silicon Waveguides
Nonlinear effects in Silicon Waveguides

... re broadened and asymmetric. The significant difference is that SPM-induced ng becomes more efficient for longer wavelengths. The spectral distance between the velength SPM oscillation and the originally injected laser wavelength increases from m when the OPA is tuned from 1400 to 1650 nm. As will ...
previous lectures - Gwynedd Astronomy Society
previous lectures - Gwynedd Astronomy Society

Reprint
Reprint

Instructor`s Guide for Virtual Astronomy Laboratories
Instructor`s Guide for Virtual Astronomy Laboratories

... be covered in only 20 laboratories. Material is approximately evenly divided between that commonly found in the Solar System part of an introductory course and that commonly associated with the stars, galaxies, and cosmology part of such a course. ...
Precision UBVJH Single Channel Photometry of Epsilon Aurigae
Precision UBVJH Single Channel Photometry of Epsilon Aurigae

... Gyldenkerne (1970) reported on photometry obtained during the 1958 eclipse with a 10-inch telescope and EMI5060 photomultiplier, and transformed using calibration stars to the Johnson B and V filters. He stated the mean pre-eclipse values were V = 2.998 (N = 50 points) and B-V = 0.555 (38 points); m ...
A Rotational and Variability Study of a Large Sample of... in NGC 2264 M. H. Lamm , C. A. L. Bailer-Jones
A Rotational and Variability Study of a Large Sample of... in NGC 2264 M. H. Lamm , C. A. L. Bailer-Jones

... fraction of a day) as a function of the modified Julian day (MJD) is shown. ...
Gamma-Ray Bursts
Gamma-Ray Bursts

... If we assume isotropic emission, the GRB would have to emit the same energy in all directions. For beamed GRBs, it’s only along the beams => Less total energy ...
- UCL Discovery
- UCL Discovery

... Depending on their ID and age, a star particle becomes a feedback particle for some period as described below and then becomes a normal gas particle. In other words, mass-loss from stars is modelled by a star particle becoming a normal gas particle, and hence, the particle mass of gas and star parti ...
Bending and Strain Sensitivities in a Helicoidal Long
Bending and Strain Sensitivities in a Helicoidal Long

Pulsed high-energy γ-rays from thermal populations in the current
Pulsed high-energy γ-rays from thermal populations in the current

... article). Uzdensky & Spitkovsky (2012) recently reported on their investigation of this regime. ...
Raman Spectroscopy
Raman Spectroscopy

... previous section, it is clear that the shorter the wavelength the more powerful the Raman signal. However, as was already stated, this is not the only consideration especially when dealing with organic molecules. Most organic molecules will tend to fluoresce when excited by high energy (short wavele ...
FOE 2017 Poster Contributions - College of Science | Oregon State
FOE 2017 Poster Contributions - College of Science | Oregon State

... Abstract: A small number of young SNRs now attributed via X-ray observations to Type Ia events show evidence for dense circumstellar media that may have arisen from the relic wind of a single-degenerate progenitor system. One such object is SN1604 (Kepler's SNR) in our Galaxy, and a similar but some ...
Experience with optical partial discharge detection M. M ,
Experience with optical partial discharge detection M. M ,

... the UV region. In this wavelength range, the UV radiation of the sun is absorbed perfectly by the ozone layer before reaching the earth. Due to this particularly developed filter, those UV rays can be produced by fires or electrical discharges also by day without the sunlight. The camera has two rep ...
ASTRONOMY AND ASTROPHYSICS Properties of solar pores
ASTRONOMY AND ASTROPHYSICS Properties of solar pores

... November 7th 1994 (III), cf. Table 1. Series I and III involved polarimetric observations, for these the almost polarization-free Gregory-Coudé-Telescope (GCT) was used. The Stokes-I observations of series II were done at the Vacuum Tower Telescope (VTT), which allows to observe up to four wavelengt ...
Polymer Based Photonic Crystals
Polymer Based Photonic Crystals

... assembly. Co-extruded films containing large numbers of alternating layers of different refractive indices were produced over 30 years ago at Dow, with first order reflectivities approaching 100 %.[8,10] A fundamental problem encountered with co-extruded films is the occurrence of undesired thicknes ...
Stellar contents and star formation in the young open cluster Stock 8
Stellar contents and star formation in the young open cluster Stock 8

The magnetic field of epsilon Eri
The magnetic field of epsilon Eri

... stars above have inspired us and urged us to learn more about them. Our closest star, the Sun, is a fairly small star, and there are many more solar-type stars. The Sun has a magnetic eld that strongly aects Earth. During the solar cycle, the magnetic eld causes sunspots to appear in dierent amo ...
comets, asteroids
comets, asteroids

... 9. Examples: In 1665 thousands of people died in London, England of a terrible disease. The next year fire nearly destroyed the city. At that time 2 comets had been sighted in the dark sky and they blamed it on the comets. They thought comets meant disaster. 10. In China a comet’s busy tail reminded ...
Measurement of phytoplankton photosynthesis rate using a pump
Measurement of phytoplankton photosynthesis rate using a pump

... practically evenly within the range of wavelengths from 400 to 520 nm. ...
Cross-bispectra and trispectra of the non
Cross-bispectra and trispectra of the non

... Due to its expansion our universe had cooled down sufficiently to allow the formation of hydrogen atoms at a redshift of z  1089 (Spergel et al. 2003). Fluctuations in the gravitational potential imposed a shift in the decoupled photons which were emitted in the (re)combination process (the Sachs–W ...
PDF format
PDF format

... b)  Observing a massive star supernova reveals the mass of the stellar remnant, and if it exceeds 3 solar masses it must be a black hole. c)  Observing the orbital motion of a star around a stellar remnant reveals the mass of the stellar remnant, and if it exceeds 3 solar masses it must be a black h ...
observability and uv coverage
observability and uv coverage

... During the imaging process (this volume, C. Hani rst lecture), a single dish telescope can be viewed as a low pass lter with cut-o frequency D= where D is the telescope diameter and  is the wavelength. The incoming wavefront is thus spatially ltered by the telescope and all spatial frequencie ...
Cassiopeia Kelly Pearce
Cassiopeia Kelly Pearce

... that the hundreds or even thousands of objects within it formed at the same time, from the same nebulae (Gater & Vamplew, 2010, p.88). There is one object within the NGC 457 that is not a part of the open cluster and is actually a red giant that is approximately 6,700 light-years closer than the rem ...
The Microenvironment Effect on the Generation of Reactive Oxygen
The Microenvironment Effect on the Generation of Reactive Oxygen

... vascular bed is accompanied by a sharp decrease in the concentration of oxygen. The oxygen depletion induces an additional oxidative stress on the tumor tissue.14 To the best of our knowledge, there has been no systematic study of the environmental effect on ROS generation by any particular sensitiz ...
A Rigid-Field Hydrodynamics approach to modelling the
A Rigid-Field Hydrodynamics approach to modelling the

... an ensemble of neighbouring 1D RFHD calculations, and find that ...
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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.
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