wk11
... Is Dark Matter Really There? • The term “missing matter” was in fairly common use early on, but it is misleading because the matter really is there — it is not missing! • There were also attempts by some scientists (Milgrom & collaborators) to see if a MOdified theory of Newtonian Dynamics (MOND) m ...
... Is Dark Matter Really There? • The term “missing matter” was in fairly common use early on, but it is misleading because the matter really is there — it is not missing! • There were also attempts by some scientists (Milgrom & collaborators) to see if a MOdified theory of Newtonian Dynamics (MOND) m ...
University of Manitoba Colloquium (ppt version) - LIGO
... masses, not because they are "attracted" by a mysterious force, but because the smaller objects travel through space that is warped by the larger object. ...
... masses, not because they are "attracted" by a mysterious force, but because the smaller objects travel through space that is warped by the larger object. ...
Gravitational Force
... where: F is the magnitude of the gravitational force between the two point masses, • G is the gravitational constant, • m1 is the mass of the first point mass, • m2 is the mass of the second point mass, and • r is the distance between the two point masses. ...
... where: F is the magnitude of the gravitational force between the two point masses, • G is the gravitational constant, • m1 is the mass of the first point mass, • m2 is the mass of the second point mass, and • r is the distance between the two point masses. ...
Faintest Star Cluster Yet Found on Outskirts of Milky Way | Globular
... Follow-up observations with the huge Keck II telescope, also on Mauna Kea, confirmed the find. Keck spectroscopic measurements, which separate light into its constituent wavelengths and allow astronomers to calculate how fast stars are moving, showed that the globular cluster's stars were moving at ...
... Follow-up observations with the huge Keck II telescope, also on Mauna Kea, confirmed the find. Keck spectroscopic measurements, which separate light into its constituent wavelengths and allow astronomers to calculate how fast stars are moving, showed that the globular cluster's stars were moving at ...
Lecture
... electromagnetic radiation in this range Eyes most sensitive to yellow light – this is where the sun emits the peak amount of energy ...
... electromagnetic radiation in this range Eyes most sensitive to yellow light – this is where the sun emits the peak amount of energy ...
Chapter 16 Galaxies and Dark Matter
... This “Lyman-alpha forest” is the result of quasar light passing through hundreds of gas clouds, each with a different redshift, on its way to us. ...
... This “Lyman-alpha forest” is the result of quasar light passing through hundreds of gas clouds, each with a different redshift, on its way to us. ...
DOC Copy for Friends and Family
... existence of dark matter is inferred from gravitational effects on visible matter, such as stars and galaxies. A small percentage of the gravitational effects observed are from visible matter (some estimates are as low as 4% of total gravitational effects). The remaining 96% is presumed to result f ...
... existence of dark matter is inferred from gravitational effects on visible matter, such as stars and galaxies. A small percentage of the gravitational effects observed are from visible matter (some estimates are as low as 4% of total gravitational effects). The remaining 96% is presumed to result f ...
Day-5
... We need to handle great distances and long times. We can do this through the travel time of light. Light travels 300,000 km every second. We often use times to denote distances. For example, we may say a friend’s house is two hours away. Astronomy is a time machine! ...
... We need to handle great distances and long times. We can do this through the travel time of light. Light travels 300,000 km every second. We often use times to denote distances. For example, we may say a friend’s house is two hours away. Astronomy is a time machine! ...
Chapter 1: A Modern View of the Universe
... Our galaxy itself contains a hundred billion stars. It's a hundred thousand light years side to side. It bulges in the middle, sixteen thousand light years thick, But out by us, it's just three thousand light years wide. We're thirty thousand light years from galactic central point We go 'round ever ...
... Our galaxy itself contains a hundred billion stars. It's a hundred thousand light years side to side. It bulges in the middle, sixteen thousand light years thick, But out by us, it's just three thousand light years wide. We're thirty thousand light years from galactic central point We go 'round ever ...
Parallax
... placed a light bulb at different distances along a meter stick and measured the brightness of the light with a light meter. On next side you will see Luisa’s data. What trends do you notice? What is the relationship between light intensity and distance? ...
... placed a light bulb at different distances along a meter stick and measured the brightness of the light with a light meter. On next side you will see Luisa’s data. What trends do you notice? What is the relationship between light intensity and distance? ...
The Extreme Universe of Gamma-ray Astronomy
... So, how do black holes emit jets of particles and light? And, how do the particles in the jets accelerate to near light speed? ...
... So, how do black holes emit jets of particles and light? And, how do the particles in the jets accelerate to near light speed? ...
Neutrino hot dark matter and hydrodynamics of structure formation
... Smaller than would-be momentum temperature T_p=1.95 K Larger than would-be energy temperature T_E=0.0001 K ...
... Smaller than would-be momentum temperature T_p=1.95 K Larger than would-be energy temperature T_E=0.0001 K ...
Sun ECBAD - University of Arizona
... 8) The Sun is much smaller than a nebula. We used a dot to represent the Sun’s location in the picture. Is this dot too small, too large or just the right size to represent the size of the Sun on the picture? Explain your reasoning. At the scale of the picture, the Sun should be much, much smaller t ...
... 8) The Sun is much smaller than a nebula. We used a dot to represent the Sun’s location in the picture. Is this dot too small, too large or just the right size to represent the size of the Sun on the picture? Explain your reasoning. At the scale of the picture, the Sun should be much, much smaller t ...
Spectra and the Doppler Effect
... 12. What will happen to the frequency (or color) of light if a star is receding or moving away from us? ...
... 12. What will happen to the frequency (or color) of light if a star is receding or moving away from us? ...
Lesson 2: Reflection and Mirrors (page 322)
... • The difference in refraction causes the white light to spread out into the colors of the spectrum. The same process occurs in water droplets. • When the sun shines through the droplets suspended in the air, a rainbow may appear. The water droplets act like tiny prisms. Refracting and reflecting th ...
... • The difference in refraction causes the white light to spread out into the colors of the spectrum. The same process occurs in water droplets. • When the sun shines through the droplets suspended in the air, a rainbow may appear. The water droplets act like tiny prisms. Refracting and reflecting th ...
