jwhitney - Astronomy at Western Kentucky University
... I will describe an astronomical observatory run by undergraduate students under the supervision of faculty mentors. The facility is operated remotely from the campus of Western Kentucky University. Undergraduate students operate a 0.6m telescope equipped with a CCD camera to obtain data for key scie ...
... I will describe an astronomical observatory run by undergraduate students under the supervision of faculty mentors. The facility is operated remotely from the campus of Western Kentucky University. Undergraduate students operate a 0.6m telescope equipped with a CCD camera to obtain data for key scie ...
Lecture Thirteen (Powerpoint format) - Flash
... The map of the anisotropies on the cosmic microwave background can be used to constrain theories of the very early universe, including inflation. The key idea here is that very distant regions on the microwave background were not in causal contact at the surface of last scattering. Hence, whatev ...
... The map of the anisotropies on the cosmic microwave background can be used to constrain theories of the very early universe, including inflation. The key idea here is that very distant regions on the microwave background were not in causal contact at the surface of last scattering. Hence, whatev ...
zog_data3
... lasers between spacecraft). The ground-based experiment reported that p had its normal, expected value with a precision of 15 decimal places. The space-based experiment measured p on a scale of 1012m, and once again found that it has its normal expected value, to an accuracy this time of 10 decimal ...
... lasers between spacecraft). The ground-based experiment reported that p had its normal, expected value with a precision of 15 decimal places. The space-based experiment measured p on a scale of 1012m, and once again found that it has its normal expected value, to an accuracy this time of 10 decimal ...
Powerpoint for today
... Temperature of background in opposite directions nearly identical. Yet even light hasn't had time to travel from A to B (only A to Earth), so A can know nothing about conditions at B, and vice versa. So why are A and B almost identical? This is “horizon problem”. ...
... Temperature of background in opposite directions nearly identical. Yet even light hasn't had time to travel from A to B (only A to Earth), so A can know nothing about conditions at B, and vice versa. So why are A and B almost identical? This is “horizon problem”. ...
mass of star
... Temperature of background in opposite directions nearly identical. Yet even light hasn't had time to travel from A to B (only A to Earth), so A can know nothing about conditions at B, and vice versa. So why are A and B almost identical? This is “horizon problem”. ...
... Temperature of background in opposite directions nearly identical. Yet even light hasn't had time to travel from A to B (only A to Earth), so A can know nothing about conditions at B, and vice versa. So why are A and B almost identical? This is “horizon problem”. ...
universe
... expansion was slowing down, but now it is speeding up. Using careful measurements of this change in expansion rate, the age of the universe is now known quite precisely to be 13.7±0.13 billion years ...
... expansion was slowing down, but now it is speeding up. Using careful measurements of this change in expansion rate, the age of the universe is now known quite precisely to be 13.7±0.13 billion years ...
PDF version - Caltech Astronomy
... Kepler’s laws and the motions of moons could be explained by an inverse-square law of gravitational attraction. But Newton was not alone in guessing at an inversesquare law. His English contemporary Robert Hooke, best known today for his work on elasticity, came independently to the idea that an inv ...
... Kepler’s laws and the motions of moons could be explained by an inverse-square law of gravitational attraction. But Newton was not alone in guessing at an inversesquare law. His English contemporary Robert Hooke, best known today for his work on elasticity, came independently to the idea that an inv ...
www.astro.utu.fi
... might decay into radiation WIMPS are a popular dark matter candidate particle, with mass of order 10 - 100 GeV perhaps they annihilate when they collide Big Bang models constrain the interaction rate time scale for annihilation of order 1022 years end of dark matter halos ...
... might decay into radiation WIMPS are a popular dark matter candidate particle, with mass of order 10 - 100 GeV perhaps they annihilate when they collide Big Bang models constrain the interaction rate time scale for annihilation of order 1022 years end of dark matter halos ...
Linking Asteroids and Meteorites through Reflectance Spectroscopy
... • He found that galaxies in the clusters had huge mass-to-light ratios ...
... • He found that galaxies in the clusters had huge mass-to-light ratios ...
Wh t i C l ? What is Cosmology?
... doesn’t work: dust will heat up over time until it reaches the same temperature as the stars that illuminate it ...
... doesn’t work: dust will heat up over time until it reaches the same temperature as the stars that illuminate it ...
Point-like source searches with ANTARES
... days is of the same order that the present limits set by AMANDA (for the Northern Hemisphere), since the better angular resolution allows a better background rejection ...
... days is of the same order that the present limits set by AMANDA (for the Northern Hemisphere), since the better angular resolution allows a better background rejection ...
The Observable Universe: Redshift, Distances and the Hubble-Law
... • Measuring Hubble expansion needs to measure distances beyond Virgo cluster measure expansion of Coma cluster against Virgo! • SN Ia obviously are very good standard candles (since 1998) are observable for z < 2. • Calibration error < 0.1 mag possible? ...
... • Measuring Hubble expansion needs to measure distances beyond Virgo cluster measure expansion of Coma cluster against Virgo! • SN Ia obviously are very good standard candles (since 1998) are observable for z < 2. • Calibration error < 0.1 mag possible? ...
powerpoint
... surface of the balloon and the expansion would look the same no matter where you were. ...
... surface of the balloon and the expansion would look the same no matter where you were. ...
SOLUTIONS TO PROBLEM SET # 4
... of matter at the time of primordial nucleosynthesis greater than or less than the density of the Earth’s air at sea level? According to the Wikipedia article “Density of Air”, dry air has a density ρair ≈ 1.2 kg/ m3 at sea level at a temperature T = 20◦ C = 68◦ F . (It becomes denser when cooler, an ...
... of matter at the time of primordial nucleosynthesis greater than or less than the density of the Earth’s air at sea level? According to the Wikipedia article “Density of Air”, dry air has a density ρair ≈ 1.2 kg/ m3 at sea level at a temperature T = 20◦ C = 68◦ F . (It becomes denser when cooler, an ...
UNIT 4 - Rowan County Schools
... Spitzer's remarkable capacity to peer through cosmic dust allowed it to unveil this never-before-seen star. ...
... Spitzer's remarkable capacity to peer through cosmic dust allowed it to unveil this never-before-seen star. ...
2. Velocity dispersions of galaxies
... • Cosmology is the scientific study of the large scale properties of the Universe as a whole. • It endeavors to use the scientific method to understand the origin, evolution and ultimate fate of the entire Universe. • Cosmology involves the formation of theories or hypotheses about the universe whic ...
... • Cosmology is the scientific study of the large scale properties of the Universe as a whole. • It endeavors to use the scientific method to understand the origin, evolution and ultimate fate of the entire Universe. • Cosmology involves the formation of theories or hypotheses about the universe whic ...
Training
... We use four other standard candles to measure distances a further factor of ten The Tully Fisher relation for spiral galaxies Supernovae of type Ia ...
... We use four other standard candles to measure distances a further factor of ten The Tully Fisher relation for spiral galaxies Supernovae of type Ia ...
Which of the following is the best description of an Sc galaxy? A) a
... c. Molecular clouds d. Reflection nebulae e. Dark nebulae The presence of forbidden lines in the spectra of emission nebula indicates that the a. nebula has a very high temperature. b. nebula contains large amounts of hydrogen. c. gas in the nebula has a very low density. d. dust in the nebula is co ...
... c. Molecular clouds d. Reflection nebulae e. Dark nebulae The presence of forbidden lines in the spectra of emission nebula indicates that the a. nebula has a very high temperature. b. nebula contains large amounts of hydrogen. c. gas in the nebula has a very low density. d. dust in the nebula is co ...
lecture1
... absorbed it would heat up the medium, which would re-radiate, producing light albeit at different wavelengths, so this doesn’t work! ...
... absorbed it would heat up the medium, which would re-radiate, producing light albeit at different wavelengths, so this doesn’t work! ...
Parker_Summary
... 3) Is the learning done on blended data or only on unblended? 4) How much spectral data does SDSS have? The goal of this project is to utilize Sloan Digital Sky Survey’s data along with machine learning techniques to ultimately increase the reliability of photometric redshift analysis for “blended” ...
... 3) Is the learning done on blended data or only on unblended? 4) How much spectral data does SDSS have? The goal of this project is to utilize Sloan Digital Sky Survey’s data along with machine learning techniques to ultimately increase the reliability of photometric redshift analysis for “blended” ...
Light Energy, Dark Energy 1. Another View of Olber's Paradox
... 3. Could your answer for #2 be true if the universe were infinitely old? No – if the amount of something is increasing, it can only have been increasing for a certain amount of time. For example, the number of people on Earth is increasing now – but clearly this can't have been going on forever into ...
... 3. Could your answer for #2 be true if the universe were infinitely old? No – if the amount of something is increasing, it can only have been increasing for a certain amount of time. For example, the number of people on Earth is increasing now – but clearly this can't have been going on forever into ...
Dark Matter: Observational Constraints Properties of Dark Matter:
... • Hot, X-ray emitting gas is observed to be insufficient • Warm, 104 K ionized gas emits by bremstrahlung. If in hydrostatic equilibrium, central regions would be dense enough to be easily observed. • Molecular gas must be H2; large quantities would be ionized and observed near the galactic plane; i ...
... • Hot, X-ray emitting gas is observed to be insufficient • Warm, 104 K ionized gas emits by bremstrahlung. If in hydrostatic equilibrium, central regions would be dense enough to be easily observed. • Molecular gas must be H2; large quantities would be ionized and observed near the galactic plane; i ...
Telescopes and Astronomical Observations
... Scale is simply determined by the effective focal length “fl” of the telescope. = 206265”/fl(mm) arcsec/mm ...
... Scale is simply determined by the effective focal length “fl” of the telescope. = 206265”/fl(mm) arcsec/mm ...