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1. ArtistтАЩs impression of the expected dark matter distribution around the Milky
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Ссылки http://www.eso.org/public/images/eso1217b/zoomable/ -- 1.9 Кб -- 12.04.2016
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2. http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7B0E7AD457-B065-4951-A37B-700D97350B59%7D
This annotated artistтАЩs impression shows the Milky Way Galaxy. The blue halo of material surrounding the galaxy indicates the expected distribution of the mysterious dark matter. New measurements based on the movements of stars show that the amount of dark matter in this region around the Sun is far smaller than predicted and have indicated that there is no significant dark matter at all in our neighborhood. ...
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Ссылки http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7B0E7AD457-B065-4951-A37B-700D97350B59%7D -- 4.0 Кб -- 10.04.2016
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3. The SMS Survey
... The SMS program is a critical endeavor to investigate whether the predictions of standard cold dark matter cosmology are consistent with the observed matter distribution in the Milky Way halo. It is the deepest, most extended search for optically elusive dwarf satellite galaxies and tidal streams to date, covering the entire Southern hemisphere. ... However only a few dwarf satellites have been found around the Milky Way to date - 22 dwarfs compared to 500-10,000 predicted by theory (Klypin et al. ...
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Ссылки http://www.mso.anu.edu.au/~jerjen/SMS_Survey.html -- 12.0 Кб -- 09.04.2016
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4. The Hydra Cluster of Galaxies
... The Hydra Cluster of Galaxies . ... 16.04.2001 . ... Most of a cluster's mass , however, appears to be in a form too dark to see , as analyses of the distribution of X-ray light , gravitational lensing , and internal motions indicate. Abell 1060, as the above cluster is also known, appears to have an even higher fraction of dark matter than seen in a similar cluster, a situation astronomers cannot easily reconcile with both clusters forming solely from gravitational attraction. ... April 2001 . ...
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Ссылки http://www.astronet.ru/db/xware/msg/1167636 -- 15.3 Кб -- 19.04.2001
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5. Kepler-10c: the First Mega-Earth | Astronotes
... Planets . ... Earth Satellites . ... The newly discovered ?mega-Earth? ... Its sibling, the lava world Kepler-10b, is in the background (the two planets? proximity is grossly exaggerated) .€а Kepler-10c has a diameter of about 29 000 km, 2.3 times as large as Earth, and weighs 17 times as much. ... The first mega-earth to be discovered is Kepler-10c which orbits a star lying about 560 light years from the Sun in the constellation Draco. ... Astronomers Find a New Type of Planet: The ?Mega-Earth? ...
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Ссылки http://www.armaghplanet.com/blog/kepler-10c-the-first-mega-earth.html -- 44.9 Кб -- 09.04.2016
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6. http://hea-www.harvard.edu/AstroStat/HEAD2008/poster_aconnors.pdf
... PROBLEMS: "Unknown" (i.e. no physics model) components; What's a "Good-Enough-Fit" (e.g. Poisson)? ... ASIDE: MULTI-SCALE FOR POISSON - called Multiplicative Multiscale Innovation Models MMI Slides courtesy of R.Willett, SAMSI 2006 Timmermann Nowak, 1999 Kolaczyk, 1999 ASIDE: MULTI-SCALE FOR POISSON - called Multiplicative Multiscale Innovation Models MMI Slides courtesy of R.Willett, SAMSI 2006 Timmermann Nowak, 1999 Kolaczyk, 1999 ASIDE: MULTI-SCALE FOR ...
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Ссылки http://hea-www.harvard.edu/AstroStat/HEAD2008/poster_aconnors.pdf -- 2526.2 Кб -- 05.04.2008
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7. Evidence for Dark Matter
Last time we saw that their might be evidence for non-luminous matter in the solar neighborhood. On the scale of the Galaxy however, there is rather direct evidence for nun-luminous material. ... If light traces mass in a galaxy then we expect a kelperian fall off in rotational velocity as a function of radial distance. ... Some sample rotation curves: . ... In the above example, the data is fitted against mass contributions from the gas, stars and dark matter in the halo. ...
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Ссылки http://zebu.uoregon.edu/1997/ph410/l9.html -- 3.9 Кб -- 31.01.1997
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8. The Radial Distribution of the Interstellar Medium in Disk Galaxies: Evidence
One possible way for spiral galaxies to internally evolve would be for gas to flow to the center and form stars in a central disk (pseudo-bulge). ... In this paper we present radial profiles of stellar and 8 ЮМm emission from polycyclic aromatic hydrocarbons (PAHs) for 11 spiral galaxies to investigate whether the interstellar medium in these galaxies contains a central concentration above that expected from the exponential disk. ...
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Ссылки http://www.stsci.edu/~kgordon/papers/2006ApJ...652.1112R.html -- 5.0 Кб -- 21.01.2016
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9. Slide 7
. First page Back Continue Last page Summary Graphics .
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Ссылки http://www.naic.edu/alfa/galfa/meetings/1/talks/koo1_files/text6.htm -- 1.6 Кб -- 06.05.2003
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10. ATNF Daily Astronomy Picture
26th of October 2015 . Gas dynamics in tidal dwarf galaxies: disc formation at z=0 . ... Tidal Dwarf Galaxies (TDGs) are recycled objects that form within the collisional debris around interacting/merging galaxies. Lelli et al. (2015) investigate the gas dynamics in a sample of six TDGs and find they can be described by rotating disc models. ... The image above shows three interacting systems (NGC 4694, NGC 5291, and NGC 7252) and their bona-fide TDGs (in yellow). ... today * ATNF | ...
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Ссылки http://www.atnf.csiro.au/ATNF-DailyImage/archive/2015/26-Oct-2015.html -- 4.8 Кб -- 10.04.2016
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11. http://xmm.vilspa.esa.es/docs/documents/CAL-SRN-0192-1-1.ps.gz
XMM-Newton CCF Release Note XMM-CCF-REL-192 EPIC MOS response S.F. Sembay, R.D. Saxton 19 August 2005 1 CCF components Name of CCF VALDATE EVALDATE Blocks changed XSCS ag EMOS1 REDIST 0057.CCF 2001-11-25 2002-05-01 CCD REDISTRIBUTION-n NO EMOS1 REDIST 0058.CCF 2002-05-01 2002-11-07 CCD REDISTRIBUTION-n NO EMOS1 REDIST 0059.CCF 2002-11-07 2004-01-01 CCD REDISTRIBUTION-n NO EMOS1 ... A core region centred on a point between the two boresights where EPIC-pn and RGS are prime. ...
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Ссылки http://xmm.vilspa.esa.es/docs/documents/CAL-SRN-0192-1-1.ps.gz -- 75.0 Кб -- 22.08.2005
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12. APOD: 2008 October 20 - Moons, Rings, and Unexpected Colors on Saturn
... 2008 October 20 . Moons, Rings, and Unexpected Colors on Saturn . Credit: Cassini Imaging Team , SSI , JPL , ESA , NASA . Explanation: Why would Saturn show such strange colors? The robotic Cassini spacecraft currently orbiting Saturn has beamed back images showing that the northern hemisphere our Solar System 's most spectacularly ringed planet has changed noticeably since Cassini arrived in 2004, now sporting unusual and unexpected colors. ... About APOD | ...
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Ссылки http://www.sai.msu.su/apod/ap081020.html -- 6.4 Кб -- 28.02.2014
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13. The Wiener-like filtering in the wavelet space
Next: Hierarchical Wiener filtering Up: Noise reduction from Previous: The convolution from . Let us consider a measured wavelet coefficient at the scale i . We assume that its value, at a given scale and a given position, results from a noisy process, with a Gaussian distribution with a mathematical expectation , and a standard deviation : . ... We get: . ... This is done from the study of the variation of the noise between two scales, with an hypothesis of a white gaussian noise; . ...
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Ссылки http://www.sao.ru/precise/Midas_doc/doc/94NOV/vol2/node342.html -- 6.1 Кб -- 23.02.1996
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14. Measurement of the dark halo shape in polar ring galaxies
... According to the most popular cosmological paradigm, the greater part of the galaxy mass is accumulated in the dark matter halo. ... The polar ring galaxies (PRGs) reveal external rings or disks of gas, dust and stars rotating in a plane roughly perpendicular to the disk of the central galaxy. ... The shape of the dark halo in the model was chosen so as to achieve the best fit to the observed rotation of both galaxies themselves and their polar rings. ... The SPRC-7 galaxy. ...
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Ссылки http://www.sao.ru/Doc-en/SciNews/2014/DMhalo/ -- 8.9 Кб -- 10.04.2016
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[ Сохраненная копия ] Ссылки http://mavr.sao.ru/Doc-en/SciNews/2014/DMhalo/ -- 8.9 Кб -- 10.04.2016
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15. Phil Plait's Bad Astronomy: Misconceptions
... Bad Astronomy . Misconceptions . ... Bad Astronomy : "That's as remote as the dark side of the Moon!" ... As the tired, hackneyed refrains went on, one in particular caught my ear: " Fly me away to the bright side of the moon, and meet me on the other side." ... As the Moon orbits the Earth, different parts of it get illuminated by the Sun. ... Bad Addendum : At the end of the album "Dark Side of the Moon" by Pink Floyd, there is a voiceover that actually says "There is no dark side of the moon. ...
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Ссылки http://www.badastronomy.com/bad/misc/dark_side.html -- 21.4 Кб -- 09.04.2016
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16. Armagh Observatory
The annual Perseid meteor shower continues until 20th August, with the peak activity occurring during the night of 11/12th August. ... The comet is in a fairly stable orbit and it sheds a fresh dust trail every time it reaches perihelion (closest distance to the Sun). ... David Asher of the Armagh Observatory is a little more cautious stating that with no meteor storm data in relatively recent times predictions cannot be calibrated to the same accuracy as the Leonid meteors. ...
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Ссылки http://star.arm.ac.uk/press/Perseids04_pr.html -- 5.8 Кб -- 12.08.2004
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17. S.P. Korolev RSC Energia - International Space Station
... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Company's History . ... History . Brief History of Rocket and Space Technology . ... ISS Russian Segment . ... ISS 45/46 . ... Experiments and Researches from 2013 . ... Defining the in-flight relationship between changes in the eye structure, state of its blood vessels and sense of vision and movement of fluids to the head, sizes of the blood vessels and blood flow types. ... 2015 JSC "S.P. Korolev RSC "Energia" . ...
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Ссылки http://www.energia.ru/en/iss/researches/human/23.html -- 26.1 Кб -- 10.04.2016
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18. Noeuds et tresses: expected results
... I.A.Dynnikov, Three-page approach to knot theory. ... Universal semigroup, Funktsional'nyi Analiz I Prilozhenija, 34 (2000), no.1, 29-40 (Russian); English translation in Functional Analysis and Its Appl. 34 (2000), no.1, 24-32. I.A.Dynnikov, Finitely presented groups and semigroups in knot theory. ... Math. 2000, no. ... English translation: Russian Math. ... A.Vershik, Numerical invariants of exponential groups, and a locally free approximation of braid groups (in Russian), Zapiski Nauchn. ...
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Ссылки http://www.mccme.ru/lifr/grants/noeuds_expected.htm -- 9.5 Кб -- 04.10.2006
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19. I Expected More Sense Than That. - an Astronomy Net Exploration Forum Message
Astronomy Discussion Forums . ... I Expected More Sense Than That. ... Post Message | ... Posted by Richard D. Stafford, Ph.D. on November 8, 2002 04:14:05 UTC . ... You are missing the point - harvey1 - November 8, 2002 - 13:10 UTC . I hope Stafford doesn't mind my intruding his forum - mrsouza - November 8, 2002 - 14:55 UTC . ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...
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Ссылки http://www.astronomy.net/forums/exploration/messages/155.shtml -- 15.4 Кб -- 09.04.2016
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20. http://www.arcetri.astro.it/igm50/talks_all/fumagalli.pdf
... Why Lyman Limit Systems (a.k.a LLSs)? ... 2014; MF et al. 2015 in prep Method #2: LLS autocorrelation The basic idea behind the experiment is to probe the correlation length of LLSs , which should correspond to the size of halos Dark matter halos NH N H Projected Separation NHI UVB Redshift Method #2: LLS autocorrelation The basic idea behind the experiment is to probe the correlation length of LLSs , which should correspond to the size of ...
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Ссылки http://www.arcetri.astro.it/igm50/talks_all/fumagalli.pdf -- 2582.2 Кб -- 17.06.2015
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