The JANUS X-Ray Flash Monitor
... JANUS was selected as one of the six NASA small explorer (SMEX) class missions to proceed to the most recent phase A study period. This selection resulted from the exciting primary science goals of the mission and due to the relatively low-risk and simple mission design. These science goals include: ...
... JANUS was selected as one of the six NASA small explorer (SMEX) class missions to proceed to the most recent phase A study period. This selection resulted from the exciting primary science goals of the mission and due to the relatively low-risk and simple mission design. These science goals include: ...
2. The Three Pillars of the Big Bang Theory
... In Chap. 1, we learned of the history of astronomy culminating in the debate concerning the nature of the spiral nebulae. The correct answer turned out to be that the spiral nebulae are galaxies much like our own. Vesto Slipher had determined that these galaxies are moving away from us at very high ...
... In Chap. 1, we learned of the history of astronomy culminating in the debate concerning the nature of the spiral nebulae. The correct answer turned out to be that the spiral nebulae are galaxies much like our own. Vesto Slipher had determined that these galaxies are moving away from us at very high ...
Seeing dark matter in the Andromeda galaxy
... dark matter stabilizes clusters of galaxies,6 their ideas were largely ignored. Our M31 study offered new evidence for dark matter in the universe. After our 1970 paper, it would take a decade of more observations of flat rotation curves and brilliant theoretical ideas7 for the scientific community ...
... dark matter stabilizes clusters of galaxies,6 their ideas were largely ignored. Our M31 study offered new evidence for dark matter in the universe. After our 1970 paper, it would take a decade of more observations of flat rotation curves and brilliant theoretical ideas7 for the scientific community ...
POISE AND EVOLUTION OF THE GALAXY : STRUCTURE ,
... luminous stars ; with a similar width, of the order of 1000 light-years, at least [Fig. 1a]. Such a reconstituted shape is by no way exceptional : quite a lot of galaxies, probably spiral as seen edgeon, in profile, indeed, display such a sandwich structure in direct observation, through the lengthy ...
... luminous stars ; with a similar width, of the order of 1000 light-years, at least [Fig. 1a]. Such a reconstituted shape is by no way exceptional : quite a lot of galaxies, probably spiral as seen edgeon, in profile, indeed, display such a sandwich structure in direct observation, through the lengthy ...
1 Dark matter and dark energy comprise over 90% of the Universe
... can detect. In the Universe, the ratio of the average density of matter and energy is the density parameter (Ω0) and is referenced in determining the fate of the Universe. Current observations based on WMAP, combined with Baryon Acoustic Oscillations and SNeIa indicate that ΩB = 0.0462 ± 0.0015, ΩD ...
... can detect. In the Universe, the ratio of the average density of matter and energy is the density parameter (Ω0) and is referenced in determining the fate of the Universe. Current observations based on WMAP, combined with Baryon Acoustic Oscillations and SNeIa indicate that ΩB = 0.0462 ± 0.0015, ΩD ...
Lecture 2: ppt, 5 MB
... Hubble has whirled around Earth nearly 88,000 times, racking up 2.3 billion miles. The telescope's observations have produced 23 terabytes of data, equal to the amount of text in 23 million novels. The Hubble data would fill two Library of Congress book collections. In Hubble's 15-year lifetim ...
... Hubble has whirled around Earth nearly 88,000 times, racking up 2.3 billion miles. The telescope's observations have produced 23 terabytes of data, equal to the amount of text in 23 million novels. The Hubble data would fill two Library of Congress book collections. In Hubble's 15-year lifetim ...
Ch. 25 - UTK Department of Physics and Astronomy
... from it should never be made available to students except by instructors using the accompanying text in their classes. All recipients of this work are expected to abide by these restrictions and to honor the intended pedagogical purposes and the needs of other instructors who rely on these materials ...
... from it should never be made available to students except by instructors using the accompanying text in their classes. All recipients of this work are expected to abide by these restrictions and to honor the intended pedagogical purposes and the needs of other instructors who rely on these materials ...
Y-band Imaging of Extragalatic Fields and High redshift
... Red line is SF galaxy evolution and blue line represents QSOs as z goes higher ...
... Red line is SF galaxy evolution and blue line represents QSOs as z goes higher ...
TELESCOPE
... 9. If the 25mm eyepiece was used with a Dobsonian scope which has a focal length of 1500 mm, what would the magnification be? 10. The ability of a telescope to collect light depends on the area of the objective lens or mirror. A telescope with a 10 inch diameter mirror will gather how may times the ...
... 9. If the 25mm eyepiece was used with a Dobsonian scope which has a focal length of 1500 mm, what would the magnification be? 10. The ability of a telescope to collect light depends on the area of the objective lens or mirror. A telescope with a 10 inch diameter mirror will gather how may times the ...
Age Estimates of Globular Clusters in the Milky Way
... stellar evolution were performed, as well as refined estimates of the parameters that govern stellar evolution, the lower limit on globular cluster ages progressively decreased, so that a wide range of cosmological models produced Hubble ages consistent with this lower limit (4 –7). In the interim, ...
... stellar evolution were performed, as well as refined estimates of the parameters that govern stellar evolution, the lower limit on globular cluster ages progressively decreased, so that a wide range of cosmological models produced Hubble ages consistent with this lower limit (4 –7). In the interim, ...
Exploring Chile, the Astronomy Capital of the World
... images for a year or so and then opening it up to the larger community, who may or may not care about that set of data. It is a model of scarcity because telescope time is at a premium, and we have more questions than answers. That model is about to change. LSST is set to observe the entire southern ...
... images for a year or so and then opening it up to the larger community, who may or may not care about that set of data. It is a model of scarcity because telescope time is at a premium, and we have more questions than answers. That model is about to change. LSST is set to observe the entire southern ...
Effects of Gravitation
... It is easy to think of spaces that are homogeneous and not isotropic, a cylinder. Regardless, if all points are the same, there can be no point being distinguished as a center or a point on an edge. In a very real sense, this name of Big Bang does not help. Most explosions have a center and certainl ...
... It is easy to think of spaces that are homogeneous and not isotropic, a cylinder. Regardless, if all points are the same, there can be no point being distinguished as a center or a point on an edge. In a very real sense, this name of Big Bang does not help. Most explosions have a center and certainl ...
Modern Telescopes and Ancient Skies
... orbits a brown dwarf “star” at a distance of about 55 AU (the star and planet are about 200 light years away) ...
... orbits a brown dwarf “star” at a distance of about 55 AU (the star and planet are about 200 light years away) ...
Gone in a flash: supernovae in the survey era
... past five years (for a review, see Gal-Yam 2012), SNe Ia. bers. But with very large imagers on reaching absolute magnitudes of –23 (50 times To date there are three identified classes 4 m-class facilities (e.g. Megacam on the brighter than a Type Ia supernova). The first of SLSN (Gal-Yam 2012), comm ...
... past five years (for a review, see Gal-Yam 2012), SNe Ia. bers. But with very large imagers on reaching absolute magnitudes of –23 (50 times To date there are three identified classes 4 m-class facilities (e.g. Megacam on the brighter than a Type Ia supernova). The first of SLSN (Gal-Yam 2012), comm ...
Lecture 21: The Doppler effect - Harvard University Department of
... The first two panels we’ve already discussed: stationary source and a source moving subsonically (less than the speed of sound). As the source approaches the speed of sound, you can see from the picture that the wavefronts in the forward direction start bunching up. When the speed of sound is hit, t ...
... The first two panels we’ve already discussed: stationary source and a source moving subsonically (less than the speed of sound). As the source approaches the speed of sound, you can see from the picture that the wavefronts in the forward direction start bunching up. When the speed of sound is hit, t ...
Fermi Fact Sheet - Fermi Gamma-ray Space Telescope
... holes eject streams of gamma-ray producing matter stretching many thousands of light-years. Gamma-ray bursts, the most energetic explosions in the universe, release more energy in a moment than our Sun emits in 10 billion years. Theory suggests that gamma rays are also produced when mysterious dark ...
... holes eject streams of gamma-ray producing matter stretching many thousands of light-years. Gamma-ray bursts, the most energetic explosions in the universe, release more energy in a moment than our Sun emits in 10 billion years. Theory suggests that gamma rays are also produced when mysterious dark ...
Static, Infinite, Etern and Auto sustentable Universe
... being does about the Universe since he has conscience from this, and his position in it, and that until now us tries to respond. We have created different cosmogonies trying to obtain some answers, but the questions still remain. The first scientific theory which was able to give answers properly, a ...
... being does about the Universe since he has conscience from this, and his position in it, and that until now us tries to respond. We have created different cosmogonies trying to obtain some answers, but the questions still remain. The first scientific theory which was able to give answers properly, a ...
The Search for the Earliest Galaxies
... like our Milky Way. In their early views with Hubble, astronomers realized that the telescope’s location above Earth’s atmosphere allowed it to see much more distant galaxies than ever before, though these galaxies were very faint and small. Light from the galaxies was detected in deeper and deeper ...
... like our Milky Way. In their early views with Hubble, astronomers realized that the telescope’s location above Earth’s atmosphere allowed it to see much more distant galaxies than ever before, though these galaxies were very faint and small. Light from the galaxies was detected in deeper and deeper ...
Dark Matter— More Than Meets The Eye
... dwarf stars too dim to be observed. Or they could be cold planet-like objects with masses about 1/1000 that of the sun. Or maxi- or mini- black holes. Or massive cold gas clouds. All these phenomena are baryonic. There is some observational evidence for the existence of MACHOs. Because they can warp ...
... dwarf stars too dim to be observed. Or they could be cold planet-like objects with masses about 1/1000 that of the sun. Or maxi- or mini- black holes. Or massive cold gas clouds. All these phenomena are baryonic. There is some observational evidence for the existence of MACHOs. Because they can warp ...
a MS Word version.
... 2. What is "star gauging" and what did this technique tell us about the shape of our "galaxy"? This technique was used up until the early 20th century, name an 18th century astronomer and a 20th century astronomer who both used this technique. Where did this technique indicate the Sun was in the "g ...
... 2. What is "star gauging" and what did this technique tell us about the shape of our "galaxy"? This technique was used up until the early 20th century, name an 18th century astronomer and a 20th century astronomer who both used this technique. Where did this technique indicate the Sun was in the "g ...
Comments
... Comments: Invited review, Physics Reports, in press. 97 pages, 24 figures The Cosmic Infrared Background (CIB) reflects the sum total of galactic luminosities integrated over the entire age of the universe. From its measurements one can deduce information about objects at epochs currently inaccessib ...
... Comments: Invited review, Physics Reports, in press. 97 pages, 24 figures The Cosmic Infrared Background (CIB) reflects the sum total of galactic luminosities integrated over the entire age of the universe. From its measurements one can deduce information about objects at epochs currently inaccessib ...
The APEX Telescope Large Area Survey of the Galaxy (ATLASGAL)
... The telescope patterns are linear on-thefly maps, where the telescope scans at (typically) 3 arcminute/s along a line, and the step between lines is 1.5 arc minutes. The 11-arcminute field of view and 295 pixels of LABOCA ensure a high redundancy in a single map. In addition, each position in the s ...
... The telescope patterns are linear on-thefly maps, where the telescope scans at (typically) 3 arcminute/s along a line, and the step between lines is 1.5 arc minutes. The 11-arcminute field of view and 295 pixels of LABOCA ensure a high redundancy in a single map. In addition, each position in the s ...
2. The World at Large: From the Big Bang to Black Holes
... as pulsars or X-ray sources (Fig. 2.4). Our Milky Way is populated by all these different types of stars: Blue, very bright, massive, and short-lived stars which are formed again and again from gas and dust, many stars like our Sun, red stars of small mass which are long-lived and faint, luminous re ...
... as pulsars or X-ray sources (Fig. 2.4). Our Milky Way is populated by all these different types of stars: Blue, very bright, massive, and short-lived stars which are formed again and again from gas and dust, many stars like our Sun, red stars of small mass which are long-lived and faint, luminous re ...
L The James Webb Space Telescope
... both be used to probe the Universe at the time of its own ‘first light’ — the birth of the first stars and galaxies. The radio array will map the large-scale structure of the Universe, elucidating the role in that structure of ‘dark matter’ and ‘dark energy’, as will studies of the faintest galaxies ...
... both be used to probe the Universe at the time of its own ‘first light’ — the birth of the first stars and galaxies. The radio array will map the large-scale structure of the Universe, elucidating the role in that structure of ‘dark matter’ and ‘dark energy’, as will studies of the faintest galaxies ...
Staring Back to Cosmic Dawn - UC-HiPACC
... few hundred million years if star formation is suddenly quenched. On the other hand, a galaxy that has lots of old stars and a few young ones can also be green just through the combination of the blue colors of its young stars and the red colors of the old ones. The Milky Way probably falls in this ...
... few hundred million years if star formation is suddenly quenched. On the other hand, a galaxy that has lots of old stars and a few young ones can also be green just through the combination of the blue colors of its young stars and the red colors of the old ones. The Milky Way probably falls in this ...