cosmic-ray neon, wolf-rayet stars, and the superbubble origin of
... production of the neon isotopes. Using this approach, the 22 Ne/ 20 Ne abundance ratio that we obtain for the cosmicray source is 0:387 0:007(statistical) 0:022(systematic). This corresponds to an enhancement by a factor of 5:3 0:3 over the 22 Ne/ 20 Ne ratio in the solar wind. This cosmic-ray ...
... production of the neon isotopes. Using this approach, the 22 Ne/ 20 Ne abundance ratio that we obtain for the cosmicray source is 0:387 0:007(statistical) 0:022(systematic). This corresponds to an enhancement by a factor of 5:3 0:3 over the 22 Ne/ 20 Ne ratio in the solar wind. This cosmic-ray ...
Photoelectron Spectroscopy of SO3 at 355 and 266 nm
... studies have shown that it is a planar molecule with D3h symmetry in the ground state. These studies have included infrared, Raman and photoionization studies of gas-phase SO39-13 and laser flash photolysis and infrared studies in matrix isolation experiments.14,15 In the matrix isolation experiment ...
... studies have shown that it is a planar molecule with D3h symmetry in the ground state. These studies have included infrared, Raman and photoionization studies of gas-phase SO39-13 and laser flash photolysis and infrared studies in matrix isolation experiments.14,15 In the matrix isolation experiment ...
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... Data from five outbursts of GRO J1008−57 were analyzed. The earliest outburst studied here occurred in 2005 February and was well covered by pointed RXTE observations (Fig. 1). In 2007 December, GRO J1008−57 underwent its strongest outburst during the lifetime of the RXTE-All Sky Monitor. The 2–10 k ...
... Data from five outbursts of GRO J1008−57 were analyzed. The earliest outburst studied here occurred in 2005 February and was well covered by pointed RXTE observations (Fig. 1). In 2007 December, GRO J1008−57 underwent its strongest outburst during the lifetime of the RXTE-All Sky Monitor. The 2–10 k ...
![Interference and Interferometry [Pedrotti^3 Ch. 7 & Ch. 8]](http://s1.studyres.com/store/data/007928149_1-59852af3eb07643d4bb123ff6997ed1c-300x300.png)
Evolution of Stars and Stellar Populations
... 1.1 Setting the stage Stars are not distributed randomly in the universe, but are assembled through gravitational interactions into galaxies. Typical distances between stars in a given galaxy are of the order of 1 parsec (pc) whereas distances between galaxies are typically of the order of 100 kpc–1 ...
... 1.1 Setting the stage Stars are not distributed randomly in the universe, but are assembled through gravitational interactions into galaxies. Typical distances between stars in a given galaxy are of the order of 1 parsec (pc) whereas distances between galaxies are typically of the order of 100 kpc–1 ...
Starter Edition Handbook
... Lastly, a note about those faint fuzzies: many people are happy observing the moon, planets, and double stars. Moving on to the more difficult deep sky objects (other than star clusters) will require a new kind of “looking.” A deep sky object is a celestial object that is not a single star and lies ...
... Lastly, a note about those faint fuzzies: many people are happy observing the moon, planets, and double stars. Moving on to the more difficult deep sky objects (other than star clusters) will require a new kind of “looking.” A deep sky object is a celestial object that is not a single star and lies ...
astrolabe
... 19. Azimuths make right angles with the zeniths. They can be used to find the zenith of the sun or any other star. 20. Twelve divisions under the azimuths indicate planetary hours. 21. The zodiac plays an important role in using the astrolabe. Zodia is a Greek word meaning “beasts” in Latin. Either ...
... 19. Azimuths make right angles with the zeniths. They can be used to find the zenith of the sun or any other star. 20. Twelve divisions under the azimuths indicate planetary hours. 21. The zodiac plays an important role in using the astrolabe. Zodia is a Greek word meaning “beasts” in Latin. Either ...
The short-exposure image of a point source formed by a corrugated
... more there is to see. However, atmospheric turbulence limits angular resolution to about 1 arcsec; consequently, a 10-m telescope has approximately the same resolving capabilities as a small 10-cm diameter tube. Resolution limitations caused by the atmospheric smearing, were first overcame by Michel ...
... more there is to see. However, atmospheric turbulence limits angular resolution to about 1 arcsec; consequently, a 10-m telescope has approximately the same resolving capabilities as a small 10-cm diameter tube. Resolution limitations caused by the atmospheric smearing, were first overcame by Michel ...
Different Types of Dispersions in an Optical Fiber
... Graded index fibers have core diameter of 50, 62.5 or 85 m and a cladding diameter of 125 m. The fiber is used in applications requiring a wide bandwidth and low model dispersion. The number of modes in the fiber is about half that of step index fiber having the same diameter. Single mode step ind ...
... Graded index fibers have core diameter of 50, 62.5 or 85 m and a cladding diameter of 125 m. The fiber is used in applications requiring a wide bandwidth and low model dispersion. The number of modes in the fiber is about half that of step index fiber having the same diameter. Single mode step ind ...
High-mass X-ray Binaries: X-raying the winds Ángel Giménez García
... La razón del comportamiento tan distinto entre SGXBs y SFXTs es todavía una incógnita. Negueruela et al. (2008b) sugirieron la posibilidad de que la inhomogeneidad propia de los vientos de estrellas calientes, unida con distintas configuraciones orbitales, pudiera ser la causa. Sin embargo, el corto ...
... La razón del comportamiento tan distinto entre SGXBs y SFXTs es todavía una incógnita. Negueruela et al. (2008b) sugirieron la posibilidad de que la inhomogeneidad propia de los vientos de estrellas calientes, unida con distintas configuraciones orbitales, pudiera ser la causa. Sin embargo, el corto ...
Basic Interferometry and Optical Testing Two
... bright fringes are also planes perpendicular to the plane of the figure. If the plane waves are traveling to the right, these fringes would be observed by placing a screen perpendicular to the plane of the figure and to the right of the grating lines as shown in Fig. 16.1. The spacing of the interfe ...
... bright fringes are also planes perpendicular to the plane of the figure. If the plane waves are traveling to the right, these fringes would be observed by placing a screen perpendicular to the plane of the figure and to the right of the grating lines as shown in Fig. 16.1. The spacing of the interfe ...
Wavelength Conversion Technologies for Photonic Network
... Despite such expectations and some promising experimental reports, the wavelength conversion technologies are as yet immature. The technologies that have been reported so far are the OE-EO transponder type, the gating type using semiconductor devices and optical fiber,5)-9) and the coherent type, wh ...
... Despite such expectations and some promising experimental reports, the wavelength conversion technologies are as yet immature. The technologies that have been reported so far are the OE-EO transponder type, the gating type using semiconductor devices and optical fiber,5)-9) and the coherent type, wh ...
The masses and spins of neutron stars and stellar
... certain). The current spins of pulsars are obviously straightforward to measure, but these spins have been affected strongly by magnetic spindown. However, as we discuss in Section 3, there are indirect ways to guess the birth spin of isolated pulsars based on the spindown energy injected into the s ...
... certain). The current spins of pulsars are obviously straightforward to measure, but these spins have been affected strongly by magnetic spindown. However, as we discuss in Section 3, there are indirect ways to guess the birth spin of isolated pulsars based on the spindown energy injected into the s ...
the first simultaneous microlensing observations by two space
... the Galactic Bulge. The event was observed by several ground-based groups as well as by Spitzer and Swift, allowing a measurement of the physical properties. However, the event is still subject to an eight-fold degeneracy, in particular the well-known close-wide degeneracy, and thus the projected se ...
... the Galactic Bulge. The event was observed by several ground-based groups as well as by Spitzer and Swift, allowing a measurement of the physical properties. However, the event is still subject to an eight-fold degeneracy, in particular the well-known close-wide degeneracy, and thus the projected se ...
A Pré-história da Química Quântica
... Democritus All matter is made up of atoms. Atoms are eternal and invisible and so small that they can’t be divided, and they entirely fill up the space they’re in. ...
... Democritus All matter is made up of atoms. Atoms are eternal and invisible and so small that they can’t be divided, and they entirely fill up the space they’re in. ...
Leakage of ionizing radiation from the nearby galaxy Tololo 1247
... reionization starts when the first ionizing sources, see e.g. Wise (2012), appear and begin producing photons capable of ionizing the surrounding medium, and it ends when basically all of the intergalactic medium (IGM) is ionized. The reionization era has been empirically constrained to redshifts be ...
... reionization starts when the first ionizing sources, see e.g. Wise (2012), appear and begin producing photons capable of ionizing the surrounding medium, and it ends when basically all of the intergalactic medium (IGM) is ionized. The reionization era has been empirically constrained to redshifts be ...
Asteroids - GEOCITIES.ws
... Barnard's results established that Ceres was the largest asteroid, with an estimated diameter of nearly 800 kilometres. These values remained the best available until new techniques were introduced during the early 1970s (see below Size and albedo). The first four asteroids came to be known as "the ...
... Barnard's results established that Ceres was the largest asteroid, with an estimated diameter of nearly 800 kilometres. These values remained the best available until new techniques were introduced during the early 1970s (see below Size and albedo). The first four asteroids came to be known as "the ...
... The dynamic and deterministic control of light over space and time on the subwavelength scale is a key requirement in order to extend concepts and functionalities of macro-optics down to the nanometer scale. An increased level of control will also have fundamental implications in our understanding ...
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.