PPT
... Yipeng Jing Shanghai Astronomical Observatory Collaborators: Chunyan Jiang, A. Faltenbacher, W.P. Lin, C. Li (astroph/0707.2628; ApJ) ...
... Yipeng Jing Shanghai Astronomical Observatory Collaborators: Chunyan Jiang, A. Faltenbacher, W.P. Lin, C. Li (astroph/0707.2628; ApJ) ...
Some Quantum Operators with Discrete Spectrum but Classically
... Both H, and H, have discrete spectrum with infinite classical phase space volumes. We will give five (!) proofs that H, has discrete spectrum; three work directly for H, also and the other two may well extend. Our reasons for giving so many proofs are several: Since the phenomenon is somewhat surpri ...
... Both H, and H, have discrete spectrum with infinite classical phase space volumes. We will give five (!) proofs that H, has discrete spectrum; three work directly for H, also and the other two may well extend. Our reasons for giving so many proofs are several: Since the phenomenon is somewhat surpri ...
A relativistic iron emission line from the neutron star low-mass X
... layers below the surface (Kuulkers 2002). The spectrum of the source observed with the BeppoSAX narrow field instruments has been modeled by Oosterbroek et al. (2001) with a diskblackbody, a Comptonized component, and absorption by interstellar medium. Interestingly, a broad iron line was clearly de ...
... layers below the surface (Kuulkers 2002). The spectrum of the source observed with the BeppoSAX narrow field instruments has been modeled by Oosterbroek et al. (2001) with a diskblackbody, a Comptonized component, and absorption by interstellar medium. Interestingly, a broad iron line was clearly de ...
Section 46.6 Strange Particles and Strangeness
... spectrum (Fig. P46.39). (a) How fast is the quasar receding? You may use the result of Problem 38. (b) Edwin Hubble discovered that all objects outside the local group of galaxies are moving away from us, with ...
... spectrum (Fig. P46.39). (a) How fast is the quasar receding? You may use the result of Problem 38. (b) Edwin Hubble discovered that all objects outside the local group of galaxies are moving away from us, with ...
EVOLUTION OF THE NUCLEAR ACCRETION DISK
... in the relative strengths of the blue and red peaks. The profile starts with the red peak stronger than the blue in 1991 November and evolves to similar strengths of the two peaks in 1994 January, then to the blue peak stronger than the red in 1996 January. The spectrum of 1997 September again shows ...
... in the relative strengths of the blue and red peaks. The profile starts with the red peak stronger than the blue in 1991 November and evolves to similar strengths of the two peaks in 1994 January, then to the blue peak stronger than the red in 1996 January. The spectrum of 1997 September again shows ...
Variability in the CoRoT photometry of three hot O
... where yi are the fluxes observed at times ti , and Θm is the vector containing the m fit-parameters. For the value of σi we take the error bars listed with each observed flux. We stop the prewhitening process when cN (m) has reached a minimum. This is very similar to least-squares minimization, but ...
... where yi are the fluxes observed at times ti , and Θm is the vector containing the m fit-parameters. For the value of σi we take the error bars listed with each observed flux. We stop the prewhitening process when cN (m) has reached a minimum. This is very similar to least-squares minimization, but ...
High Energy Emission in Extragalactic Nonblazar Sources
... Velocity dispersions ~500-1000 km s-1 ...
... Velocity dispersions ~500-1000 km s-1 ...
Understanding Our Home Star FDP: Full Disk Patrol Telescope ISS
... Full-disk digital images of the Sun in select wavelengths as rapidly as every 10 seconds. Earlier NSO instruments typically delivered one image per day on film in a limited number of wavelengths. Significance: Much of the solar activity that affects us is visible in two lower layers of the solar atm ...
... Full-disk digital images of the Sun in select wavelengths as rapidly as every 10 seconds. Earlier NSO instruments typically delivered one image per day on film in a limited number of wavelengths. Significance: Much of the solar activity that affects us is visible in two lower layers of the solar atm ...
Investigation of Rb D1 Atomic Lines in Strong Magnetic Fields by
... lution is caused by the effect of a strong narrowing of the fluorescence spectrum of a nanocell with the atomic vapor column thickness L = 0.5λ (the method was called FHL) compared to normal 1cmlong cells (for which the Doppler width is ~500 MHz). With the proper choice of parameters, it is possib ...
... lution is caused by the effect of a strong narrowing of the fluorescence spectrum of a nanocell with the atomic vapor column thickness L = 0.5λ (the method was called FHL) compared to normal 1cmlong cells (for which the Doppler width is ~500 MHz). With the proper choice of parameters, it is possib ...
ISNS3371_032707_bw - The University of Texas at Dallas
... direction you look, some of this scattered blue light reaches you. Since you see the blue light from everywhere overhead, the sky looks blue. As you look closer to the horizon, the sky appears much paler in color. To reach you, the scattered blue light must pass through more air. Some of it gets sca ...
... direction you look, some of this scattered blue light reaches you. Since you see the blue light from everywhere overhead, the sky looks blue. As you look closer to the horizon, the sky appears much paler in color. To reach you, the scattered blue light must pass through more air. Some of it gets sca ...
shirley - Yancy L. Shirley`s Webpage
... UCHII Regions & Hot Cores UCHII Regions and Hot Cores observed in some highmass regions such as W49A VLA 7mm Cont. ...
... UCHII Regions & Hot Cores UCHII Regions and Hot Cores observed in some highmass regions such as W49A VLA 7mm Cont. ...
Binary Asteroids
... Mars and Jupiter- made of rock and iron Some cross paths with Earth (ALWAYS Wear a helmet!) Range in size from pebbles to 1000 km across (about size of Texas) Over 640,000 asteroids cataloged (So Far!) Probably ~1 million larger than 1 km (0.6mile across) exist. ~1 billion larger ...
... Mars and Jupiter- made of rock and iron Some cross paths with Earth (ALWAYS Wear a helmet!) Range in size from pebbles to 1000 km across (about size of Texas) Over 640,000 asteroids cataloged (So Far!) Probably ~1 million larger than 1 km (0.6mile across) exist. ~1 billion larger ...
ppt format
... Mars and Jupiter- made of rock and iron Some cross paths with Earth (ALWAYS Wear a helmet!) Range in size from pebbles to 1000 km across (about size of Texas) Over 640,000 asteroids cataloged (So Far!) Probably ~1 million larger than 1 km (0.6mile across) exist. ~1 billion larger ...
... Mars and Jupiter- made of rock and iron Some cross paths with Earth (ALWAYS Wear a helmet!) Range in size from pebbles to 1000 km across (about size of Texas) Over 640,000 asteroids cataloged (So Far!) Probably ~1 million larger than 1 km (0.6mile across) exist. ~1 billion larger ...
How far away are the Stars?
... • If distance to an object is known, we can measure its size. Diameter 2 Dis tan ce ...
... • If distance to an object is known, we can measure its size. Diameter 2 Dis tan ce ...
Modelling the atmosphere of the carbon
... 90% AmC and 10% SiC for the dust composition. This ratio gave the best results for the ISO/SWS spectrum of the carbon star R Scl. Fits for RU Vir with a lower SiC fraction were not as good. The optical constants for the opacities of silicon carbide are taken from Pitman et al. (2008) and amorphous c ...
... 90% AmC and 10% SiC for the dust composition. This ratio gave the best results for the ISO/SWS spectrum of the carbon star R Scl. Fits for RU Vir with a lower SiC fraction were not as good. The optical constants for the opacities of silicon carbide are taken from Pitman et al. (2008) and amorphous c ...
The Cosmic Perspective A Modern View of the Universe
... The Milky Way orbits the center of the universe. Our solar system orbits the center of our galaxy. The Earth orbits the Sun. The Earth is spinning on its axis. ...
... The Milky Way orbits the center of the universe. Our solar system orbits the center of our galaxy. The Earth orbits the Sun. The Earth is spinning on its axis. ...
The Big Bang and Stellar Evolution
... to 15 billion years ago, and stars were formed 5 billion years later. They only allow about 2½ billion years for it to clump together into stars! Their dating problem has been caused by the discovery of supposedly faraway quasars (which we will discuss later), some of which are dated at 15 billion l ...
... to 15 billion years ago, and stars were formed 5 billion years later. They only allow about 2½ billion years for it to clump together into stars! Their dating problem has been caused by the discovery of supposedly faraway quasars (which we will discuss later), some of which are dated at 15 billion l ...
Proper Motion of a Star
... angular velocity is small enough that measurements must be made from photographs taken many years apart. The negatives of Barnard’s Star provided in this lab were taken in 1924 and 1951 respectively. Since proper motion is an angular velocity, we also need to know the star’s distance to find its rea ...
... angular velocity is small enough that measurements must be made from photographs taken many years apart. The negatives of Barnard’s Star provided in this lab were taken in 1924 and 1951 respectively. Since proper motion is an angular velocity, we also need to know the star’s distance to find its rea ...
2004 - thephysicsteacher.ie
... (v) Give two ways in which the U-value of a house can be reduced. (vi) The diagram shows a solar panel (solar heater) which can be used in the heating of a house. (vii) What energy conversion takes place in a solar panel? (i) Why are the pipes in the solar panel usually made from copper? (ii) Why ar ...
... (v) Give two ways in which the U-value of a house can be reduced. (vi) The diagram shows a solar panel (solar heater) which can be used in the heating of a house. (vii) What energy conversion takes place in a solar panel? (i) Why are the pipes in the solar panel usually made from copper? (ii) Why ar ...
transparencies
... • Up to 1032 ergs released (between few minuts to tens of minuts) • Large flare at maximum of solar cycle • Observed smaller flares (in energy and time) • Located in solar corona and cromosphere • Heat plasma and accelerated electrons, protons and heavier nuclei • Electromagnetic radiation produced ...
... • Up to 1032 ergs released (between few minuts to tens of minuts) • Large flare at maximum of solar cycle • Observed smaller flares (in energy and time) • Located in solar corona and cromosphere • Heat plasma and accelerated electrons, protons and heavier nuclei • Electromagnetic radiation produced ...
Observing the Night Sky - Constellations
... binoculars available to assist you in seeing the fainter stars. 3. Determine Limiting Magnitude - Your instructor will point out a constellation with a large variety of stellar magnitudes. The constellation should be located high above the horizon, where Earth's atmosphere cannot dim the star's brig ...
... binoculars available to assist you in seeing the fainter stars. 3. Determine Limiting Magnitude - Your instructor will point out a constellation with a large variety of stellar magnitudes. The constellation should be located high above the horizon, where Earth's atmosphere cannot dim the star's brig ...
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.