First All-Sky Measurement of Muon Flux with IceCube
... IceCube Neutrino Telescope Works on the principle of Cherenkov Light Muons produced by cosmic rays in the atmosphere are background for astrophysical searches Neutrinos cannot be detected directly Neutrinos convert into muons inside the Earth Earth is used as a filter against background ...
... IceCube Neutrino Telescope Works on the principle of Cherenkov Light Muons produced by cosmic rays in the atmosphere are background for astrophysical searches Neutrinos cannot be detected directly Neutrinos convert into muons inside the Earth Earth is used as a filter against background ...
Slide 1
... since the Universe became transparent (about 377 000 years after the Big Bang). The expansion of the Universe has gradually increased the wavelengths of this radiation so that it now occurs in the microwave region of the electromagnetic spectrum. This radiation was first detected by Penzias and Wils ...
... since the Universe became transparent (about 377 000 years after the Big Bang). The expansion of the Universe has gradually increased the wavelengths of this radiation so that it now occurs in the microwave region of the electromagnetic spectrum. This radiation was first detected by Penzias and Wils ...
Astronomy (ASTR)
... Century Cosmology. Modern cosmology, buttressed by increasingly precise observational data provided by space missions like HST, COBE, and WMAP, teaches that the universe is composed primarily of matter we cannot see nor properly characterize, the so-called 'dark matter,' and of energy whose source i ...
... Century Cosmology. Modern cosmology, buttressed by increasingly precise observational data provided by space missions like HST, COBE, and WMAP, teaches that the universe is composed primarily of matter we cannot see nor properly characterize, the so-called 'dark matter,' and of energy whose source i ...
Olbers` Paradox - NMSU Astronomy
... argument is that it doesn’t require the stars to be randomly scattered in space, but also works if the stars are grouped in clumps (i.e. galaxies). It was only five years later in 1831 that John Herschel laid to rest the attenuating medium theory by showing that in a Universe filled with radiation 1 ...
... argument is that it doesn’t require the stars to be randomly scattered in space, but also works if the stars are grouped in clumps (i.e. galaxies). It was only five years later in 1831 that John Herschel laid to rest the attenuating medium theory by showing that in a Universe filled with radiation 1 ...
exploring the solar system, the galaxies, and the
... Open the Amazing Space web site at http://amazing-space.stsci.edu/ in preparation for lab activities during which you will find resources to address specific Georgia Performance Standards related to Astronomy for grades 2, 4, and 6. Read these standards below, and select at least two topics for whic ...
... Open the Amazing Space web site at http://amazing-space.stsci.edu/ in preparation for lab activities during which you will find resources to address specific Georgia Performance Standards related to Astronomy for grades 2, 4, and 6. Read these standards below, and select at least two topics for whic ...
Cosmology with GMRT
... Since dark matter is typically dominant even in the central regions, the dark matter density distribution in dwarfs should reflect that predicted by numerical simulations Details of ‘baryon physics’, e.g. the mass to light ratio of the stellar population, feedback from baryonic cooling and c ...
... Since dark matter is typically dominant even in the central regions, the dark matter density distribution in dwarfs should reflect that predicted by numerical simulations Details of ‘baryon physics’, e.g. the mass to light ratio of the stellar population, feedback from baryonic cooling and c ...
Mega Telescopes of the 21st Century
... • Space provides unique access to UV, x-rays • Space provides very stable environment where image resolution is limited primarily by the size of the telescope. • NIR sky background vastly lower in space ...
... • Space provides unique access to UV, x-rays • Space provides very stable environment where image resolution is limited primarily by the size of the telescope. • NIR sky background vastly lower in space ...
Frontiers of Astrophysics - Space Telescope Science Institute
... From random initial conditions it is “easy” to study the evolution of dark matter through computer simulations. The reason is that dark matter interacts only by gravity. ...
... From random initial conditions it is “easy” to study the evolution of dark matter through computer simulations. The reason is that dark matter interacts only by gravity. ...
Lecture 5
... proponent of the so-called "island universes" hypothesis, which holds that spiral nebulae are actually independent galaxies. The matter was conclusively settled by Edwin Hubble in the early 1920s using a new telescope. He was able to resolve the outer parts of some spiral nebulae as collections of i ...
... proponent of the so-called "island universes" hypothesis, which holds that spiral nebulae are actually independent galaxies. The matter was conclusively settled by Edwin Hubble in the early 1920s using a new telescope. He was able to resolve the outer parts of some spiral nebulae as collections of i ...
Slide 1
... proponent of the so-called "island universes" hypothesis, which holds that spiral nebulae are actually independent galaxies. The matter was conclusively settled by Edwin Hubble in the early 1920s using a new telescope. He was able to resolve the outer parts of some spiral nebulae as collections of i ...
... proponent of the so-called "island universes" hypothesis, which holds that spiral nebulae are actually independent galaxies. The matter was conclusively settled by Edwin Hubble in the early 1920s using a new telescope. He was able to resolve the outer parts of some spiral nebulae as collections of i ...
Topic 4 - The University of Sheffield
... cause emission lines as the gas atoms collide with each other. (2) Disruption of Binaries - if there are a large number of BHs they would be expected to gravitationally disrupt Wide Binaries. i.e. we would not expect there to be many “loose” or wide ordinary binary systems. So finding lots of wide b ...
... cause emission lines as the gas atoms collide with each other. (2) Disruption of Binaries - if there are a large number of BHs they would be expected to gravitationally disrupt Wide Binaries. i.e. we would not expect there to be many “loose” or wide ordinary binary systems. So finding lots of wide b ...
Searches for Cosmic-Ray Electron Anisotropies with the Fermi
... We search for anisotropies with no a priori assumptions on the energy, direction, and angular size of the anisotropy. − Analyzed multiple subsets of the data: E>60GeV, E>120GeV, E>240GeV, E>480GeV. − Started with an all-sky search but also evaluated the sky towards candidate sources (different trial ...
... We search for anisotropies with no a priori assumptions on the energy, direction, and angular size of the anisotropy. − Analyzed multiple subsets of the data: E>60GeV, E>120GeV, E>240GeV, E>480GeV. − Started with an all-sky search but also evaluated the sky towards candidate sources (different trial ...
1 - Pi of the Sky
... Apart from neutrinos the Earth is bombarded from space by other kind of stable particles: electrons, protons and nuclei, as well as their antiparticles. Together with hard photons they are often called ‘cosmic rays”. They usually interact in the atmosphere and create cosmic showers. One can easily d ...
... Apart from neutrinos the Earth is bombarded from space by other kind of stable particles: electrons, protons and nuclei, as well as their antiparticles. Together with hard photons they are often called ‘cosmic rays”. They usually interact in the atmosphere and create cosmic showers. One can easily d ...
ppt
... drop in flux at below Ly-. Steidel et al. have >1000 z~3 objects, "drop" in U-band. Pushing to higher redshift- Finding Lyman break galaxies at z~6 : using i-drops. ...
... drop in flux at below Ly-. Steidel et al. have >1000 z~3 objects, "drop" in U-band. Pushing to higher redshift- Finding Lyman break galaxies at z~6 : using i-drops. ...
The Galaxies
... Universe in just the last few years, and many decades-old problems have been solved by Hubble and WMAP. ► However, many fundamental questions such as the nature of dark mater and dark energy remain unanswered. It is likely that significant progress will be made in our lifetime, so keep an eye out fo ...
... Universe in just the last few years, and many decades-old problems have been solved by Hubble and WMAP. ► However, many fundamental questions such as the nature of dark mater and dark energy remain unanswered. It is likely that significant progress will be made in our lifetime, so keep an eye out fo ...
The Cosmic Microwave Background and the Big Bang Theory of the
... center of the surface? It is NOT the center of the sphere, since this is in the third dimension! Every point on the surface of the balloon is equivalent to every other (if we ignore the neck of the balloon, where we inflate it; there is no neck on the universe). This is the cosmological principle ap ...
... center of the surface? It is NOT the center of the sphere, since this is in the third dimension! Every point on the surface of the balloon is equivalent to every other (if we ignore the neck of the balloon, where we inflate it; there is no neck on the universe). This is the cosmological principle ap ...
doc - Eu-Hou
... instrument, limited time slots are available. Applicants can expect to receive a response within a week after submission of a request which will be sent to the email address given in the application. If the request can be accommodated, the response will contain the date and time of the measurements, ...
... instrument, limited time slots are available. Applicants can expect to receive a response within a week after submission of a request which will be sent to the email address given in the application. If the request can be accommodated, the response will contain the date and time of the measurements, ...
Unit 11: Dark Energy
... edge of the Sun) or because the distances involved were large enough to show the cumulative effect of subtle differences from Newton's gravity. He posed three astronomical tests for the theory: the orbit of Mercury, the path of light near the limb of the Sun, and the effect of gravity on light from ...
... edge of the Sun) or because the distances involved were large enough to show the cumulative effect of subtle differences from Newton's gravity. He posed three astronomical tests for the theory: the orbit of Mercury, the path of light near the limb of the Sun, and the effect of gravity on light from ...
Powerpoint slides
... just shown us, however, that the more distant the galaxy, the longer ago light left it to travel to our telescope. Therefore, as we look out in space, we are also looking back in time. The Hubble Ultra Deep Field is a very important image. With a few exceptions, every fuzzy point of light in this im ...
... just shown us, however, that the more distant the galaxy, the longer ago light left it to travel to our telescope. Therefore, as we look out in space, we are also looking back in time. The Hubble Ultra Deep Field is a very important image. With a few exceptions, every fuzzy point of light in this im ...
Astrophysics E1. This question is about stars.
... ● this means that stars are uniformly spaced; ● and that if it is infinite there must be a star at every point in space / a star along every line of sight; ● since there are regions without stars, Newton’s model must be inadequate; [3 max] ...
... ● this means that stars are uniformly spaced; ● and that if it is infinite there must be a star at every point in space / a star along every line of sight; ● since there are regions without stars, Newton’s model must be inadequate; [3 max] ...
Some Examples of Virtual Observatory Enabled Science What Are the Some Distinguishing
... • In order to study QSOs (and other AGN), we first have to find them, in large numbers, and hopefully in a systematic fashion – This is especially important for studies of their evolution ...
... • In order to study QSOs (and other AGN), we first have to find them, in large numbers, and hopefully in a systematic fashion – This is especially important for studies of their evolution ...
Space Science Chapter 10.1 textbook
... The search for an explanation of the universe’s formation has now been going on for more than 80 years. Today, the most widely supported theory is that approximately 13.7 billion years ago an unimaginably tiny volume of space suddenly and rapidly expanded to immense size. In a very short time, all t ...
... The search for an explanation of the universe’s formation has now been going on for more than 80 years. Today, the most widely supported theory is that approximately 13.7 billion years ago an unimaginably tiny volume of space suddenly and rapidly expanded to immense size. In a very short time, all t ...