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3461. http://www.mso.anu.edu.au/~bessell/Filters/Filters.ps
Filters Filters are used in astronomy for two main purґ poses, to either lower the overall intensity of the light or to restrict the wavelength range of the light that is being measured. ... Some filters work by selective absorption and transmittance: these are the colored glass filters. ... The standard U, B, V & R bandpasses can be defined using only glass filters but better R and I bandpasses can be made using interference edge filters for the red cutoffs. ... Some glasses, eg. ...
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Ссылки http://www.mso.anu.edu.au/~bessell/Filters/Filters.ps -- 68.6 Кб -- 21.01.2004
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3462. http://www.mso.anu.edu.au/~bessell/Mags/Mags.ps
Magnitude Scales and Phoґ tometric Systems More than any other aspects of astronomy, the subjects of magnitude scales and photometric systems are encumbered by history. ... Photometric systems represent attempts to define standard bandґ passes and sets of standard sources, measured with these bandpasses, that are wellґdistributed about the whole sky. ... The division is made at a redder wavelength (? 650 nm) than for the EROS1 system and the EROS2 blue band more resembles the Hipparcos passband. ...
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Ссылки http://www.mso.anu.edu.au/~bessell/Mags/Mags.ps -- 131.5 Кб -- 21.01.2004
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3463. http://www.mso.anu.edu.au/~fbriggs/bbk.pdf
... An RFI "" reference signal,оо is constructed from the cross power spectrum of the signals from the two polarizations of a reference horn pointed at the source of the RFI signal. ... The method requires computation of cross power spectra between the RFI contaminated astronomical signals and high signal-to-noise ratio RFI "" reference signals оо obtained from a receiving system that senses the RFI but not the astronomical signal. ... The solid line is the cross power spectrum C ( f ) 34 deпned in eq. ...
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Ссылки http://www.mso.anu.edu.au/~fbriggs/bbk.pdf -- 913.4 Кб -- 08.01.2004
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3464. http://www.mso.anu.edu.au/~fbriggs/briggs.pdf
... uі 2) w 7? 2) ?? 7? 7? ) їі ' ?є ё? ?% h s f 3 R R P D f И ( x X 5 ? z V R # !? g 3? ? s x e f D f f H f ( s f ( Ў SiII CI OI SiII CII SiIV FeII CIV FeII AlII SiII GF ° rц ?? sг tш xф Pе g© ?а C PH IH GF 4E DC їі (% )? ї 4% 4B A0 @9 48 0 3Ї 67 X? u? v? 65 8? yЇ ) ? 43 hЁ Є r? ї? Ґ tг ф ?ц Ўл ...
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Ссылки http://www.mso.anu.edu.au/~fbriggs/briggs.pdf -- 630.0 Кб -- 08.01.2004
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3465. http://www.mso.anu.edu.au/pfrancis/string/newfil.pdf
... mf hi hf V? t h )f f )x )f q i peo I ml w ? ... mf )i ) lf x y q w g g ld x #p ) hi "f 5 )? b Xys ' ? ... m Е m Е q Qvu tx ? ... x И mf i hДy А vs f q )? )f )u g j y w )s y ) u lx i vt 'f lu tx q Бx s j? vg ?i vf Е yd s Е q h ? ... HG lx i p6o u ?x ju y FD ) h ? ... q hw y @y @y @y @y @y @y @y @y @y @y @y @y @y @y @y @y @y @y y @y ) ) ) ) ) ) ) ) ) ) ) ) ) hw hw hw hw hw hw y hw @y h yu Б xd d s v? Бf d А l )x ) jf fvw w vw hy p u l tx q x ? ...
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Ссылки http://www.mso.anu.edu.au/pfrancis/string/newfil.pdf -- 459.1 Кб -- 07.01.2004
[ Текст ] Ссылки http://www.mso.anu.edu.au/~pfrancis/string/newfil.pdf -- 459.1 Кб -- 07.01.2004
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[ Текст ] Ссылки http://www.mso.anu.edu.au/~pfrancis/string/newfil.pdf -- 459.1 Кб -- 07.01.2004
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3466. THE AUSTRALIAN NATIONAL UNIVERSITY
... NOTE TO EDITORS: GALAXY FLY-THROUGH AVAILABLE ONLINE . HUGE GALAXY STRING CHALLENGES SPACE THEORY . An enormous string of galaxies 300 million light-years long has been discovered in the remote Universe, challenging existing theories about how the Universe evolved. ... ANU astronomer Dr Paul Francis, who coordinated the international research team, said the galaxy string lay 10,800 million light-years away. ... The research was funded by NASA and the Australian National University. ...
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Ссылки http://www.mso.anu.edu.au/pfrancis/string/ausrelease.htm -- 5.8 Кб -- 06.01.2004
[ Сохраненная копия ] Ссылки http://www.mso.anu.edu.au/~pfrancis/string/ausrelease.htm -- 5.8 Кб -- 06.01.2004
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[ Сохраненная копия ] Ссылки http://www.mso.anu.edu.au/~pfrancis/string/ausrelease.htm -- 5.8 Кб -- 06.01.2004
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3467. http://www.mso.anu.edu.au/pfrancis/string/ausrelease.doc
... The remote area was formed very early, at a time when the Universe was a fifth of its present age and the presence of the galaxy string defies existing models, which can not explain how a string this big could have formed so long ago. ... The simulations tell us that you cannot take the matter in the early Universe and line it up in strings this large," Dr Francis said. ... But in the early Universe, most galaxies had not yet formed, and most dark matter clouds will not yet contain a galaxy. ...
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Ссылки http://www.mso.anu.edu.au/pfrancis/string/ausrelease.doc -- 69.0 Кб -- 06.01.2004
[ Текст ] Ссылки http://www.mso.anu.edu.au/~pfrancis/string/ausrelease.doc -- 69.0 Кб -- 06.01.2004
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[ Текст ] Ссылки http://www.mso.anu.edu.au/~pfrancis/string/ausrelease.doc -- 69.0 Кб -- 06.01.2004
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3468. http://www.mso.anu.edu.au/~gdc/prepr/AndII_vars.pdf
... Every dSph galaxy surveyed for variable stars has also been found to contain at least one anomalous Cepheid (AC). ... We removed the DACS00 photometric data from the CMD for those stars which were found to be variable in this paper and instead plotted them as plusses representing the mean magnitude and color of the variable star. ... As noted in Paper I, the mean periods of the RRab stars in the dSph galaxies fill in the gap between the metal-rich and metal-poor Galactic globular clusters. ...
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Ссылки http://www.mso.anu.edu.au/~gdc/prepr/AndII_vars.pdf -- 889.2 Кб -- 05.11.2003
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3469. http://www.mso.anu.edu.au/~chiaki/works/geppo.pdf
e-mail: nakasato@astron.s.u-tokyo.ac.jp e-mail: chiaki@MPA-Garching.MPG.DE GRAPE GRAPE ) GRAPE GRAPE ) GRAPE ) ) GRAPE GRAPE Steinmetz The model Models ) GRAPE GRAPE (GRAvity piPE) GRAPE ) GRAPE GRAPE ) GRAPE GRAPE ) ) CDM ) X QSO GRAPE CDM m () () () GRAPE GRAPE II Ib Ic Ia O Zn SAURON , , , Vol. GRAPE project http://www.astrogrape.org/ Sugimoto D., et al., ... PASJ, , Steinmetz M., , MNRAS, , Mori M., et al., ApJL, , Nakasato N., Nomoto K., , ApJ, , Kobayashi C., , MNRAS, in press ...
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Ссылки http://www.mso.anu.edu.au/~chiaki/works/geppo.pdf -- 52.5 Кб -- 30.09.2003
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3470. http://www.mso.anu.edu.au/~charley/papers/LineweaverGrether03color.ps
... By identifying trends of the exoplanet mass and period distributions in a sub-sample of exoplanets less-biased by selection e ects, and linearly ex- trapolating these trends into regions of parameter space that have not yet been completely sampled, we nd at least 9% of Sun-like stars have planets in the mass and orbital period ranges Msin i > 0:3M Jupiter and P < 13 years, and at least 22% have planets in the larger range Msin i > 0:1M Jupiter and P < 60 years. ... 3 { Fig. ... 6 Log(R 0 HK ) g ...
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Ссылки http://www.mso.anu.edu.au/~charley/papers/LineweaverGrether03color.ps -- 864.2 Кб -- 22.08.2003
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3471. Untitled Document
. Sunday, 13 July 2003 .
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Ссылки http://www.mso.anu.edu.au/~brian/press/top.htm -- 6.2 Кб -- 13.07.2003
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3472. New Stromlo
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Ссылки http://www.mso.anu.edu.au/~brian/press/ -- 1.5 Кб -- 13.07.2003
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3473. http://www.mso.anu.edu.au/~geoff/HEA/11_Accretion_Disks_II.pdf
Accretion Disks II 1 The dynamical equations for accretion discs 1.1 Setting up the model Thin accretion disc z r 2h(r ) Compact object High Energy Astrophysics: Accretion Disks II 1/59 The simplest accretion disc model to construct is that of the thin disc. ... High Energy Astrophysics: Accretion Disks II 33/59 By the time the gas has reached the innermost stable orbit, the energy lost per unit mass is: GM --------2r0 (1.7-13) The mass accreted per unit time is M a . ...
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Ссылки http://www.mso.anu.edu.au/~geoff/HEA/11_Accretion_Disks_II.pdf -- 813.5 Кб -- 12.06.2003
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3474. http://www.mso.anu.edu.au/~geoff/HEA/9_Relativistic_Effects.pdf
Relativistic Effects 1 Introduction The radio-emitting plasma in AGN contains electrons with relativistic energies. ... High Energy Astrophysics : Relativistic Effects 87/92 Appendix A Line element in momentum space in terms of hyperspherical angles We have the hyperspherical angle representation of a point in momentum space: p 0 = mc cosh p 1 = mc sinh sin cos p 2 = mc sinh sin sin p 3 = mc sinh cos (119) We can write: High Energy Astrophysics : Relativistic ...
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Ссылки http://www.mso.anu.edu.au/~geoff/HEA/9_Relativistic_Effects.pdf -- 826.4 Кб -- 12.06.2003
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3475. http://www.mso.anu.edu.au/~geoff/HEA/A1_Tensors.pdf
Cartesian Tensors Reference: H. Jeffreys Cartesian Tensors Cartesian tensors 1/35 1 Coordinates and Vectors z = x3 e3 y = x2 e2 e1 x = x1 Cartesian tensors 2/35 Coordinates xi x1 = x Unit vectors ei e1 = e x = i i = 1, 2, 3 e3 = ez = k (2) i = 1, 2, 3 x2 = y x3 = z (1) e2 = e y = j General vector (formal definition to follow) denoted by components e.g. u = u i Cartesian tensors 3/35 Notation The boldface notation for vectors is referred to as dyadic notation The subscript notation is tensor notation. ...
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Ссылки http://www.mso.anu.edu.au/~geoff/HEA/A1_Tensors.pdf -- 147.0 Кб -- 27.05.2003
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3476. http://www.mso.anu.edu.au/~geoff/HEA/A2_EM_Theory.pdf
Electromagnetic Theory Summary: Ї Ї Ї Ї Ї Ї Maxwell's equations EM Potentials Equations of motion of particles in electromagnetic fields Green's functions Lienard-Weichert potentials Spectral distribution of electromagnetic energy from an arbitrarily moving charge Electromagnetic Theory 1 /56 1 Maxwell's equations curl E = ґ B t Faraday's law 1 E ... Electromagnetic Theory 17 /56 6 Green's functions Green's functions are widely used in electromagnetic and other field theories. ...
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Ссылки http://www.mso.anu.edu.au/~geoff/HEA/A2_EM_Theory.pdf -- 163.2 Кб -- 27.05.2003
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3477. http://www.mso.anu.edu.au/~geoff/HEA/7_Emission_and_Absorption.pdf
... High Energy Astrophysics: Emission and Absorption 1/114 HST optical image of 3C273 Note the very strong central point source and the less luminous jet. ... 4 I n 2 F = d B ( T ) cos sin d = B ( T ) 0 0 High Energy Astrophysics: Emission and Absorption 16/114 6 The Einstein relations 6.1 Definition of the Einstein coefficients These relations are arrived at in a similar manner to Kirchhoff's law via the inclusion of a new process ґ stimulated emission. ... They are separated in energy by h . ...
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Ссылки http://www.mso.anu.edu.au/~geoff/HEA/7_Emission_and_Absorption.pdf -- 1698.7 Кб -- 27.05.2003
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3478. http://www.mso.anu.edu.au/~geoff/HEA/8_Radio_Galaxies.pdf
Radio Galaxies 1 Fanaroff-Riley Class Radio-optical overlay of the prototype FR 1 radio galaxy 3C 31 Credits: Alan Bridle and Robert Laing High Energy Astrophysics: Radio Galaxies ? Geoffrey V. Bicknell The prototype FR 2 radio galaxy, Cygnus A.Note the difference in the jet structure compared to 3C 31. Dreher, Carilli and Perley, ApJ, 316, 611 High Energy Astrophysics: Radio Galaxies 2/56 Cygnus A at 850 microns. ... E * || * * cos2 E E || ґ sin2 E E || * * ґ sin cos ( E E || ...
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Ссылки http://www.mso.anu.edu.au/~geoff/HEA/8_Radio_Galaxies.pdf -- 407.6 Кб -- 27.05.2003
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3479. http://www.mso.anu.edu.au/~geoff/HEA/6_Compton_Scattering_II.pdf
... From Wilson et al. (2000) astro-ph 0009308 High Energy Astrophysics : Compton Scattering II 4/95 2 Inverse compton spectrum from a single relativistic electron 2.1 Relative importance of SSC and EIC emission One can readily ascertain the relative importance of SSC and EIC emission from the expression for the Compton power: 4 P Compton = -3 4 = -3 T c 2 2 U ph (1) T c 2 U ph for relativistic particles High Energy ... High Energy Astrophysics: Compton Scattering II 95/95 ...
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Ссылки http://www.mso.anu.edu.au/~geoff/HEA/6_Compton_Scattering_II.pdf -- 430.6 Кб -- 27.05.2003
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3480. http://www.mso.anu.edu.au/~geoff/HEA/5_Compton_Scattering_I.pdf
Compton Scattering I 1 Introduction Compton scattering is the process whereby photons gain or lose energy from collisions with electrons. ... In this application "something" is the electron. ... The Lorentz transformed energy of this bunch of photons in the lab frame is dE 1 = ( dE 1 + cd p x ) = ( dE 1 ) ( 1 + cos 1 ) High Energy Astrophysics : Compton Scattering I 45/59 However, scatterings with cos 1 0 and cos 1 0 are equally likely, because of the symmetry of the Thomson cross ...
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Ссылки http://www.mso.anu.edu.au/~geoff/HEA/5_Compton_Scattering_I.pdf -- 105.7 Кб -- 27.05.2003
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