Studies of dark matter in and around stars
... on the passing light from more distant objects, through weak lensing. The finding was that the mass distribution does not follow the gas distribution as would be expected in a world without dark matter [5]. In contrast to galactic rotation curves, this is very difficult to explain by modifying gravi ...
... on the passing light from more distant objects, through weak lensing. The finding was that the mass distribution does not follow the gas distribution as would be expected in a world without dark matter [5]. In contrast to galactic rotation curves, this is very difficult to explain by modifying gravi ...
Extragalactic background light inferred from AEGIS
... redshifts, and corrections to fit their results to other observational data are applied. Type (iii) models are not directly based on galaxy data. Instead, they are built from some parametrization of the history of the SFR density. This is a quantity derived using several different methods, each of w ...
... redshifts, and corrections to fit their results to other observational data are applied. Type (iii) models are not directly based on galaxy data. Instead, they are built from some parametrization of the history of the SFR density. This is a quantity derived using several different methods, each of w ...
Jan Wicherink Jan Wicherink
... reading about for so long. Never in my wildest dreams could I have imagined that science and spirituality could one day be united! I soon found out that many more scientists are thinking along the same lines and are now corroborating esoteric eastern wisdom. The truth is that science and spiritualit ...
... reading about for so long. Never in my wildest dreams could I have imagined that science and spirituality could one day be united! I soon found out that many more scientists are thinking along the same lines and are now corroborating esoteric eastern wisdom. The truth is that science and spiritualit ...
Dark Energy from the Gas of Wormholes
... of the gas of virtual wormholes can be described by the topological bias exactly as it happens in the presence of actual wormholes [7, 9]. For limiting topologies when the density of virtual wormholes becomes infinite the Green function shows a good ultraviolet behavior which means that there exists ...
... of the gas of virtual wormholes can be described by the topological bias exactly as it happens in the presence of actual wormholes [7, 9]. For limiting topologies when the density of virtual wormholes becomes infinite the Green function shows a good ultraviolet behavior which means that there exists ...
Wandering in the Redshift Desert
... many of us believed they were caught in a merger-driven starburst. It was quite a surprise when one of these galaxies (BzK-15504 at z = 2.38) did not show any sign of ongoing merging, but on SINFONI 3D spectroscopy looked like a rather ordered rotating disc (Genzel et al., 2006). But still, its many ...
... many of us believed they were caught in a merger-driven starburst. It was quite a surprise when one of these galaxies (BzK-15504 at z = 2.38) did not show any sign of ongoing merging, but on SINFONI 3D spectroscopy looked like a rather ordered rotating disc (Genzel et al., 2006). But still, its many ...
Universe of Motion - Reciprocal System of theory
... This volume is a continuation of a series which undertakes to determine the characteristics that the physical universe must necessarily have if it is composed entirely of discrete units of motion, and to show that the universe thus defined is identical, item by item, with the observed physical unive ...
... This volume is a continuation of a series which undertakes to determine the characteristics that the physical universe must necessarily have if it is composed entirely of discrete units of motion, and to show that the universe thus defined is identical, item by item, with the observed physical unive ...
http://lambda.gsfc.nasa.gov/product/map/dr1/pub_papers/firstyear/basic/wmap_basic_results.pdf
... Time-ordered telemetry data from the Observatory are down-linked via NASA’s Deep Space Network (DSN) to the WMAP Science and Mission Operations Center (SMOC) at the Goddard Space Flight Center. The data are then transferred to the WMAP Science Team for analysis. All of the instrument data are down-l ...
... Time-ordered telemetry data from the Observatory are down-linked via NASA’s Deep Space Network (DSN) to the WMAP Science and Mission Operations Center (SMOC) at the Goddard Space Flight Center. The data are then transferred to the WMAP Science Team for analysis. All of the instrument data are down-l ...
Review of asymmetric dark matter
... related, though in a different way from standard ADM scenarios. Case 1 is qualitatively distinct from the others, because correlated asymmetries are created simultaneously in the visible and dark sectors via common interactions, with the universe always being symmetric in some linear combination of ...
... related, though in a different way from standard ADM scenarios. Case 1 is qualitatively distinct from the others, because correlated asymmetries are created simultaneously in the visible and dark sectors via common interactions, with the universe always being symmetric in some linear combination of ...
Which part of the spectrum can be separated into
... 1. Which part of the spectrum can be separated into rainbow like colors? Answer: visible light 2. Which waves have the shortest wave lengths? Longest? Answer: gamma; radio 3. What is a spectroscope/prism used for? Answer: split white light into colors 4. What kind spectrum is used to determine the c ...
... 1. Which part of the spectrum can be separated into rainbow like colors? Answer: visible light 2. Which waves have the shortest wave lengths? Longest? Answer: gamma; radio 3. What is a spectroscope/prism used for? Answer: split white light into colors 4. What kind spectrum is used to determine the c ...
Predicting the CIB-φ contamination in the cross
... it cannot be completely removed from a tSZ Compton parameter map, which is constructed from a linear combination of multiple frequency maps. We have estimated the contamination of the CIB-φ correlation in the tSZ-φ power-spectrum. We considered linear combinations that reconstruct the tSZ Compton pa ...
... it cannot be completely removed from a tSZ Compton parameter map, which is constructed from a linear combination of multiple frequency maps. We have estimated the contamination of the CIB-φ correlation in the tSZ-φ power-spectrum. We considered linear combinations that reconstruct the tSZ Compton pa ...
Hubble Deep Field Academy -- Overview
... Includes images from the activity, which can be used to develop your own interactive lesson. Also identifies resources used in the activity and others related to the topic, which can be used by students and educators to do further research. Activity Authors: Provides information about the authors, i ...
... Includes images from the activity, which can be used to develop your own interactive lesson. Also identifies resources used in the activity and others related to the topic, which can be used by students and educators to do further research. Activity Authors: Provides information about the authors, i ...
THE MORPHOLOGICAL DEMOGRAPHICS OF GALAXIES IN THE
... The archeological nature of galaxy evolution studies prevents us from following individual galaxies over time. In consequence we are only left with snapshots at different lookback times from where we attempt, as excavators, to piece together their evolutionary histories from the motion of different ...
... The archeological nature of galaxy evolution studies prevents us from following individual galaxies over time. In consequence we are only left with snapshots at different lookback times from where we attempt, as excavators, to piece together their evolutionary histories from the motion of different ...
implication on the mass and
... Are massive spirals already formed at z~ 1 ? ! Connection between LIRGs and disks (z>0.4) (HST morphologies and color maps) : 40% of LIRGs are large disks (Zheng et al, 2004, A&A) ! Lilly et al (1998) large disk sample (rdisk > 4 h50-1 kpc) at 0.5 < z < 1: 32 (+/-13)% of them are LIRGs ! LIRGs have ...
... Are massive spirals already formed at z~ 1 ? ! Connection between LIRGs and disks (z>0.4) (HST morphologies and color maps) : 40% of LIRGs are large disks (Zheng et al, 2004, A&A) ! Lilly et al (1998) large disk sample (rdisk > 4 h50-1 kpc) at 0.5 < z < 1: 32 (+/-13)% of them are LIRGs ! LIRGs have ...
Annual Report 2014 - Max Planck Institute for Astrophysics
... particles, and the calculation of transition probThe Max-Planck-Institut für Astrophysik, usually abilities and cross–sections for astrophysical procalled MPA for short, was founded in 1958 under cesses in rarefied media. From its inception the the directorship of Ludwig Biermann. It was estab- MPA h ...
... particles, and the calculation of transition probThe Max-Planck-Institut für Astrophysik, usually abilities and cross–sections for astrophysical procalled MPA for short, was founded in 1958 under cesses in rarefied media. From its inception the the directorship of Ludwig Biermann. It was estab- MPA h ...
Word - The Open University
... are regions where the intensity of light is higher. The top rectangle is the spectrum of the radio galaxy 3C 273, while the lower rectangle is the spectrum of a comparison emission line source. In both spectra three common lines of hydrogen have been indicated. The lines in the spectrum of 3C 273 ap ...
... are regions where the intensity of light is higher. The top rectangle is the spectrum of the radio galaxy 3C 273, while the lower rectangle is the spectrum of a comparison emission line source. In both spectra three common lines of hydrogen have been indicated. The lines in the spectrum of 3C 273 ap ...
Chapter 20 Notes
... “milk,” and the star-rich region of our own galaxy has long been called the Milky Way. Other galaxies, before they were recognized as containing stars, were called nebulas, from the Latin for “clouds.” What do you think was the reason these starry regions were described in these terms? Chapter menu ...
... “milk,” and the star-rich region of our own galaxy has long been called the Milky Way. Other galaxies, before they were recognized as containing stars, were called nebulas, from the Latin for “clouds.” What do you think was the reason these starry regions were described in these terms? Chapter menu ...
PH607 – Galaxies
... amount of light emitted by the 8 kpc region would be the same as the region from 8 - 20 kpc... whereas measurements show that the 8 kpc region emits about 10 times more light than the 8 - 20 kpc region. The major conclusion is that the distribution of emitted light is not necessarily the same as the ...
... amount of light emitted by the 8 kpc region would be the same as the region from 8 - 20 kpc... whereas measurements show that the 8 kpc region emits about 10 times more light than the 8 - 20 kpc region. The major conclusion is that the distribution of emitted light is not necessarily the same as the ...
PERIMETER INSTITUTE L`INSTITUT PERIMETER
... describe how we may nevertheless find fingerprints of the quantum nature of short distance physics via experiments measuring phenomena over cosmological scales. Similarly, cosmological observations provide important clues about the physics of the very early universe, which in turn may provide hints ...
... describe how we may nevertheless find fingerprints of the quantum nature of short distance physics via experiments measuring phenomena over cosmological scales. Similarly, cosmological observations provide important clues about the physics of the very early universe, which in turn may provide hints ...
A UV study of nearby luminous infrared galaxies: star formation
... Both dust obscuration and the strength of star formation activity is likely to evolve with increasing look-back time and similar plots from high-redshift surveys are keenly anticipated. Finally, we note some points regarding the SDSS and GALEX data that underpin this study. A potential concern for o ...
... Both dust obscuration and the strength of star formation activity is likely to evolve with increasing look-back time and similar plots from high-redshift surveys are keenly anticipated. Finally, we note some points regarding the SDSS and GALEX data that underpin this study. A potential concern for o ...
Hubble Space Telescope Imaging of Post
... and 4250 Å. Htotal is the summation of the Balmer lines Hδ, Hζ, and Hη. The Hsig parameter is the significance level of the detection of the Htotal parameter. The Balmer Break parameter is defined as a strength based on ratio of the fluxes at two 100 Å wide regions starting at restwavelengths of 3 ...
... and 4250 Å. Htotal is the summation of the Balmer lines Hδ, Hζ, and Hη. The Hsig parameter is the significance level of the detection of the Htotal parameter. The Balmer Break parameter is defined as a strength based on ratio of the fluxes at two 100 Å wide regions starting at restwavelengths of 3 ...
Schutz A First Course in General Relativity(Second Edition).
... relativity which I taught from 1975 to 1980, an experience which firmly convinced me that general relativity is not significantly more difficult for undergraduates to learn than the standard undergraduate-level treatments of electromagnetism and quantum mechanics. The explosion of research interest ...
... relativity which I taught from 1975 to 1980, an experience which firmly convinced me that general relativity is not significantly more difficult for undergraduates to learn than the standard undergraduate-level treatments of electromagnetism and quantum mechanics. The explosion of research interest ...
The Milky Way - The Independent School
... Dark Matter Adding “visible” mass in: • stars, • interstellar gas, • dust, …etc., we find that most of the mass is “invisible”! • The nature of this “dark matter” is not understood at this time. • Some ideas: brown dwarfs, small black holes, exotic elementary particles. ...
... Dark Matter Adding “visible” mass in: • stars, • interstellar gas, • dust, …etc., we find that most of the mass is “invisible”! • The nature of this “dark matter” is not understood at this time. • Some ideas: brown dwarfs, small black holes, exotic elementary particles. ...
Non-standard cosmology
A non-standard cosmology is any physical cosmological model of the universe that has been, or still is, proposed as an alternative to the Big Bang model of standard physical cosmology. In the history of cosmology, various scientists and researchers have disputed parts or all of the Big Bang due to a rejection or addition of fundamental assumptions needed to develop a theoretical model of the universe. From the 1940s to the 1960s, the astrophysical community was equally divided between supporters of the Big Bang theory and supporters of a rival steady state universe. It was not until advances in observational cosmology in the late 1960s that the Big Bang would eventually become the dominant theory, and today there are few active researchers who dispute it.The term non-standard is applied to any cosmological theory that does not conform to the scientific consensus, but is not used in describing alternative models where no consensus has been reached, and is also used to describe theories that accept a ""big bang"" occurred but differ as to the detailed physics of the origin and evolution of the universe. Because the term depends on the prevailing consensus, the meaning of the term changes over time. For example, hot dark matter would not have been considered non-standard in 1990, but would be in 2010. Conversely, a non-zero cosmological constant resulting in an accelerating universe would have been considered non-standard in 1990, but is part of the standard cosmology in 2010.