Toward Resolving the Outflow Engine: An Observational Perspective
... for jet rotation, i.e., that they transport angular momentum. We will also show how measurements such as those of width and the velocity field close to the source suggest jets are initially launched as warm magnetocentrifugal disk winds. Finally, the power of the spectroastrometric technique, as a p ...
... for jet rotation, i.e., that they transport angular momentum. We will also show how measurements such as those of width and the velocity field close to the source suggest jets are initially launched as warm magnetocentrifugal disk winds. Finally, the power of the spectroastrometric technique, as a p ...
1 Assignment Discovery Online Curriculum Lesson title
... apparent shift in position. Then they calculate the distance based on a trigonometric relationship between the parallax angle and the “baseline” (the radius of Earth's orbit). Considering that the more distant an object is, the smaller the angle it will make, why would parallax measurements be bette ...
... apparent shift in position. Then they calculate the distance based on a trigonometric relationship between the parallax angle and the “baseline” (the radius of Earth's orbit). Considering that the more distant an object is, the smaller the angle it will make, why would parallax measurements be bette ...
astro-ph/0502206 PDF
... The fusion of hydrogen atoms – the same mechanism that is at the heart of a Hydrogen Bomb – is generally accepted as the energy source of our Sun. Yet, if this theory was the actual source of the Sun’s energy, a) Why is the Sun’s emission of neutrinos only about 1/3 the amount expected from fusion r ...
... The fusion of hydrogen atoms – the same mechanism that is at the heart of a Hydrogen Bomb – is generally accepted as the energy source of our Sun. Yet, if this theory was the actual source of the Sun’s energy, a) Why is the Sun’s emission of neutrinos only about 1/3 the amount expected from fusion r ...
ISP 205: Visions of the Universe
... • How did we come to be? — The matter in our bodies came from the Big Bang, which produced hydrogen and helium. — All other elements were constructed from H and He in stars and then recycled into new star systems, including our solar system. Copyright © 2012 Pearson Education, Inc. ...
... • How did we come to be? — The matter in our bodies came from the Big Bang, which produced hydrogen and helium. — All other elements were constructed from H and He in stars and then recycled into new star systems, including our solar system. Copyright © 2012 Pearson Education, Inc. ...
Ideas and Researches on Physical Concepts in India*
... system in some respects more sophisticated than the deductive system of Euclid’, and further emphasized, ‘India is richer than China in abstract and theoretical sciences such as mathematics and logic’. The philosophical schools of this period accepted atom as the basic unit and gave a logical struct ...
... system in some respects more sophisticated than the deductive system of Euclid’, and further emphasized, ‘India is richer than China in abstract and theoretical sciences such as mathematics and logic’. The philosophical schools of this period accepted atom as the basic unit and gave a logical struct ...
Nanofabrication via Atom Optics with Chromium
... particle lithography are not a consideration. Other advantages include the resistless nature of the process, and also the highly accurate periodic focusing arrays that can be realized, making fabrication in parallel inherently feasible. We report here on advances made in utilizing a standing-wave ge ...
... particle lithography are not a consideration. Other advantages include the resistless nature of the process, and also the highly accurate periodic focusing arrays that can be realized, making fabrication in parallel inherently feasible. We report here on advances made in utilizing a standing-wave ge ...
The Space Density of Spiral Galaxies as f(magnitude, size and
... i.e. reddening vector runs parallel to metallicity color gradients ...
... i.e. reddening vector runs parallel to metallicity color gradients ...
Astronomy Astrophysics − Orbital phase-resolved spectroscopy of 4U 1538
... continuously. We obtained the good interval times for all orbital phase ranges, which were the input for extracting our data. We estimated the orbital period of the system and then folded the light curves, and we fitted the X-ray spectra with the same model for every orbital phase spectrum. We also ...
... continuously. We obtained the good interval times for all orbital phase ranges, which were the input for extracting our data. We estimated the orbital period of the system and then folded the light curves, and we fitted the X-ray spectra with the same model for every orbital phase spectrum. We also ...
Torsional Aluminum electrostatic light modulators
... The Principles and Applications of Micro Transducers Spring/2001, 6-2, p10 ...
... The Principles and Applications of Micro Transducers Spring/2001, 6-2, p10 ...
On the history and future of cosmic planet formation
... rare in galaxies below 109 M⊙ ; while the Magellanic Clouds may have some giant planets, it is unlikely that lower mass dwarf satellite galaxies of the Milky Way will have any. In both cases, the Johnson & Li (2012) minimum metallicity threshold is a weak one, as the vast majority of star formation ...
... rare in galaxies below 109 M⊙ ; while the Magellanic Clouds may have some giant planets, it is unlikely that lower mass dwarf satellite galaxies of the Milky Way will have any. In both cases, the Johnson & Li (2012) minimum metallicity threshold is a weak one, as the vast majority of star formation ...
LesHouches_VanGrootel
... • Kepler observations with -month and -year baseline • Determination of the rotation properties and core dynamics (single and ...
... • Kepler observations with -month and -year baseline • Determination of the rotation properties and core dynamics (single and ...
Reviewing the physics Some leftover philosophy
... • Aether drag. It was known that light moves more slowly through materials which have an index of refraction. So, filling a telescope with water (Fresnel) should have a calculable effect on aberration. (You would have to tilt the telescope a little more, to allow for the longer time-of-flight.) – It ...
... • Aether drag. It was known that light moves more slowly through materials which have an index of refraction. So, filling a telescope with water (Fresnel) should have a calculable effect on aberration. (You would have to tilt the telescope a little more, to allow for the longer time-of-flight.) – It ...
Focal Point
... Measure four slits on the card. The slits should be 1 inch long, o inch wide, and o inch apart. Center the slits in the middle of the card. An Exact-o knife works best for cutting because it creates the smoothest slits. It is important to avoid ragged or uneven edges. Cut the bottom and top from the ...
... Measure four slits on the card. The slits should be 1 inch long, o inch wide, and o inch apart. Center the slits in the middle of the card. An Exact-o knife works best for cutting because it creates the smoothest slits. It is important to avoid ragged or uneven edges. Cut the bottom and top from the ...
1. Wave Nature of Light
... 1. Gaussian beam A particular HeNe laser beam at 633 nm has a spot size of 0.8 mm. Assuming a Gaussian beam, what is the divergence of the beam? What are its Rayleigh range and the beam width at 10 m? 2. Gaussian beam in a cavity with spherical mirrors Consider an optical cavity formed b two aligned ...
... 1. Gaussian beam A particular HeNe laser beam at 633 nm has a spot size of 0.8 mm. Assuming a Gaussian beam, what is the divergence of the beam? What are its Rayleigh range and the beam width at 10 m? 2. Gaussian beam in a cavity with spherical mirrors Consider an optical cavity formed b two aligned ...
Taking “The Road Not Taken”: On the Benefits
... of fools and babies.” 1. In the long-term future (centuries from now): • Biology away from the Earth: life may be explored not only directly in our solar system (fish in Europa, enceladus), but also remotely in habitable extra solar planets. If mature civilizations exist, their signals may be detecte ...
... of fools and babies.” 1. In the long-term future (centuries from now): • Biology away from the Earth: life may be explored not only directly in our solar system (fish in Europa, enceladus), but also remotely in habitable extra solar planets. If mature civilizations exist, their signals may be detecte ...
Tracing the evolution of NGC 6397 through the chemical
... products. The remaining gas is dispersed by core-collapse supernovae of the second generation and star formation ceases. The present-day cluster is dominated by the second generation, with a smaller fraction, approximately 30%, being left of the primordial population. Critical factors determining th ...
... products. The remaining gas is dispersed by core-collapse supernovae of the second generation and star formation ceases. The present-day cluster is dominated by the second generation, with a smaller fraction, approximately 30%, being left of the primordial population. Critical factors determining th ...
Chapter 2 Matter and Change
... Mixtures are a physical blend of at least two substances; have variable composition. They can be either: 1) Heterogeneous – the mixture is not uniform in composition • Chocolate chip cookie, gravel, soil. 2) Homogeneous - same composition throughout; called “solutions” • Kool-aid, air, salt water ...
... Mixtures are a physical blend of at least two substances; have variable composition. They can be either: 1) Heterogeneous – the mixture is not uniform in composition • Chocolate chip cookie, gravel, soil. 2) Homogeneous - same composition throughout; called “solutions” • Kool-aid, air, salt water ...
L. Zampieri - Astrophysics Group of the University of Crete
... in a rather peculiar state ('ultraluminous state') * Some may host IMBHs, but most of them do not require BHs this massive However, not necessarily all ULXs contain stellar-mass (<10-20 Msun) BHs ...
... in a rather peculiar state ('ultraluminous state') * Some may host IMBHs, but most of them do not require BHs this massive However, not necessarily all ULXs contain stellar-mass (<10-20 Msun) BHs ...
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.