ASTRONOMY 5
... a) The orbital speeds of stars far from the Galactic center are surprisingly high, suggesting that these stars are feeling gravitational effects from unseen matter. b) Although dark matter emits no visible light, it can be seen with radio telescopes, and such observations confirm that the halo of ou ...
... a) The orbital speeds of stars far from the Galactic center are surprisingly high, suggesting that these stars are feeling gravitational effects from unseen matter. b) Although dark matter emits no visible light, it can be seen with radio telescopes, and such observations confirm that the halo of ou ...
lecture25
... A lens in this section is taken to be a single object made of transparent material of refractive material n>1. There are two surface boundaries. Light from an object incident on the first surface forms an image, which becomes the object for the second surface. A thin lens is one for which the distan ...
... A lens in this section is taken to be a single object made of transparent material of refractive material n>1. There are two surface boundaries. Light from an object incident on the first surface forms an image, which becomes the object for the second surface. A thin lens is one for which the distan ...
Dark Matter in the Universe:
... As a MACHO passes near the line-of-sight to a star in the Large Magellanic Cloud, the star will appear to brighten and then return to normal (twinkle!) How much the star brightens depends on how close the MACHO comes to the line-of-sight. How long it appears to be brighter depends on how fast the MA ...
... As a MACHO passes near the line-of-sight to a star in the Large Magellanic Cloud, the star will appear to brighten and then return to normal (twinkle!) How much the star brightens depends on how close the MACHO comes to the line-of-sight. How long it appears to be brighter depends on how fast the MA ...
Astronomy Test Objective 1: Origins of the Universe Multiple Choice
... Black holes in the centers of giant galaxies—some more than one billion solar masses—had enough infalling gas to once blaze as quasars. The final mass of a black hole is not primordial, but instead is determined during the galaxy formation process. This shows that there is a close relationship betwe ...
... Black holes in the centers of giant galaxies—some more than one billion solar masses—had enough infalling gas to once blaze as quasars. The final mass of a black hole is not primordial, but instead is determined during the galaxy formation process. This shows that there is a close relationship betwe ...
Introduction to Astrophysics
... The core of astronomy is traditionally seen as observing the positions and brightnesses of astronomical objects. Now brightnesses can be measured a large range of the EM spectrum for a huge zoo of ‘astronomical objects.’ Astrophysics is more about the underlying physical processes and their causes, ...
... The core of astronomy is traditionally seen as observing the positions and brightnesses of astronomical objects. Now brightnesses can be measured a large range of the EM spectrum for a huge zoo of ‘astronomical objects.’ Astrophysics is more about the underlying physical processes and their causes, ...
Hubble - schoolphysics
... This means that: The velocity of recession of a galaxy increases by 70 kms-1 for every 1 Mpc increase in distance. The value of H can be found by measuring the distance of another galaxy using the periodluminosity relationship for a Cepheid variable star. The period of intensity variation is directl ...
... This means that: The velocity of recession of a galaxy increases by 70 kms-1 for every 1 Mpc increase in distance. The value of H can be found by measuring the distance of another galaxy using the periodluminosity relationship for a Cepheid variable star. The period of intensity variation is directl ...
Studying the Metallicities of Dwarf Galaxies Myles McKay (SCSU)
... NO DEFINITION! Milky Way Galaxy ...
... NO DEFINITION! Milky Way Galaxy ...
Review4
... What is the significance of the large red-shifts of quasars? Why are quasars so luminous yet so small? In which part of the spectrum do the quasars emit most of the energy? How old are the quasars? Why do the components of some quasars seem to be moving apart faster than the speed of light? To what ...
... What is the significance of the large red-shifts of quasars? Why are quasars so luminous yet so small? In which part of the spectrum do the quasars emit most of the energy? How old are the quasars? Why do the components of some quasars seem to be moving apart faster than the speed of light? To what ...
ppt
... reaches the same temperature as the stars that illuminate it (I’m not sure 17th century astronomers would have realised this) ...
... reaches the same temperature as the stars that illuminate it (I’m not sure 17th century astronomers would have realised this) ...
Solar Electric Power generation
... • May have more than a hundred separate troughs at such a facility ...
... • May have more than a hundred separate troughs at such a facility ...
A brief history of cosmology Early ideas: astronomy
... reaches the same temperature as the stars that illuminate it (I’m not sure 17th century astronomers would have realised this) ...
... reaches the same temperature as the stars that illuminate it (I’m not sure 17th century astronomers would have realised this) ...
Model answer
... 4-bShort sight: It is the vision defect through which near objects can be seen clearly but far objects seen distorted. The image formed in front of the retina.-------Correction by using concave lens . ...
... 4-bShort sight: It is the vision defect through which near objects can be seen clearly but far objects seen distorted. The image formed in front of the retina.-------Correction by using concave lens . ...
Einstein`s waves: a new tool to explore the Universe
... General Relativity A Radical Idea • Gravity is not a force, but a property of space & time • Concentrations of mass or energy distort (warp) spacetime • Objects follow shortest path through this warped spacetime A B ...
... General Relativity A Radical Idea • Gravity is not a force, but a property of space & time • Concentrations of mass or energy distort (warp) spacetime • Objects follow shortest path through this warped spacetime A B ...
ppt
... The classical Newton plus relativistic corrections method briefly described below faces three major problems. First of all, it ignores that in General Relativity time and space are intimately related, as in the classical approach, time and space are separate entities. Secondly, a (complete) review o ...
... The classical Newton plus relativistic corrections method briefly described below faces three major problems. First of all, it ignores that in General Relativity time and space are intimately related, as in the classical approach, time and space are separate entities. Secondly, a (complete) review o ...
The Deflection of Light in the Dynamic Theory of Gravity
... the radius of the sun was used in calculating the light deflection and next two neutron stars of different masses and radii were also used Since neutron stars are stars of great gravity it should be only logical to expect that light would be more deflected in their vicinity by analogy of general rel ...
... the radius of the sun was used in calculating the light deflection and next two neutron stars of different masses and radii were also used Since neutron stars are stars of great gravity it should be only logical to expect that light would be more deflected in their vicinity by analogy of general rel ...
Winning Entries in this week’s Galaxy
... • Π, Θ, Z velocities but relative to Local Standard of Rest • LSR is point instantaneously centered on Sun, but moving in a perfectly circular orbit. • Solar motion = motion of sun relative to LSR ...
... • Π, Θ, Z velocities but relative to Local Standard of Rest • LSR is point instantaneously centered on Sun, but moving in a perfectly circular orbit. • Solar motion = motion of sun relative to LSR ...
Physics 127 Descriptive Astronomy Homework #19 Key
... 13-9. How do astronomers conclude that vast quantities of dark matter surround our Galaxy? How is this dark matter distributed in space? There are several pieces of evidence that lead us to conclude that the galaxy is embedded in a gigantic halo of dark matter. Perhaps the most compelling is the rat ...
... 13-9. How do astronomers conclude that vast quantities of dark matter surround our Galaxy? How is this dark matter distributed in space? There are several pieces of evidence that lead us to conclude that the galaxy is embedded in a gigantic halo of dark matter. Perhaps the most compelling is the rat ...
