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341. http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/ABSTR/fpi-mst.txt
Light scattering by multi-layered axisymmetric particles V G Farafonov^1, M S Prokopjeva^2 and V B Il'in^2 ^1 St.Petersburg University of Aerocosmic Instrumentation, Bol.Morskaya ul. 67, St.Petersburg 190000, Russia ^2 Sobolev Astronomical Institute, St.Petersburg University, Bibliotechnaya pl. 2, St.Petersburg 198504, Russia Abstract We present an exact solution to the problem of light scattering by multi-layered axisymmetric particles and a numerical code implementing this solution. ...
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Ссылки http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/ABSTR/fpi-mst.txt -- 2.4 Кб -- 19.11.2010
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342. http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/ABSTR/pea-mst.txt
Light scattering by multi-layered ellipsoidal particles in the quasistatic approximation B Posselt^1,2, V G Farafonov^3, V B Il'in^2 and M S Prokopjeva^2 ^1 Friedrich Schiller University , Schillergaesschen 2-3, Jena, D-07745 Germany ^2 Sobolev Astronomical Institute, St.Petersburg University , Bibliotechnaya pl.2, St.Petersburg 198504, Russia ^3 St.Petersburg University of Aerocosmic Instrumentation, Bol.Morskaya 67, ...
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Ссылки http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/ABSTR/pea-mst.txt -- 2.7 Кб -- 19.11.2010
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343. http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/ABSTR/sv-irs.txt
MODELLING OF POLARIZATION PROPERTIES OF COMETARY DUST GRAINS D.A.Semenov and N.V.Voshchinnikov Astronomy Department and Sobolev Astronomical Institute, St.Petersburg University, St.Petersburg, 198504 Russia ABSTRACT Observational data for dusty comets are summarized and systemized. The dependence of the linear polarization on various parameters (the phase angle, wavelength, etc.) is analyzed. ...
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Ссылки http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/ABSTR/sv-irs.txt -- 1.7 Кб -- 19.11.2010
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344. http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/ABSTR/v-irs.txt
SCATTERING AND POLARIZATION PROPERTIES OF THE NON-SPHERICAL PARTICLES N.V.Voshchinnikov Astronomy Department and Sobolev Astronomical Institute, St.Petersburg University, St.Petersburg 198504 Russia ABSTRACT The albedo and dichroic polarization of spheroidal particles are studied. ... The consideration is based on the solution to the light scattering problem by the Separation of Variables Method (Voshchinnikov and Farafonov, 1993). ...
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Ссылки http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/ABSTR/v-irs.txt -- 1.8 Кб -- 19.11.2010
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345. http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/ABSTR/vs-pazh.txt
THE TEMPERATURE OF NONSPHERICAL CIRCUMSTELLAR DUST GRAINS N.V.Voshchinnikov and D.A.Semenov Astronomy Department and Sobolev Astronomical Institute, St.Petersburg University, St.Petersburg, 198504 Russia ABSTRACT The temperature of prolate and oblate spheroidal dust grains in the envelopes of stars of various spectral types are calculated. ... The temperature ratio T_d (spheroid)/ T_d (sphere) depends most strongly on the grain chemical composition and shape. ...
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Ссылки http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/ABSTR/vs-pazh.txt -- 2.5 Кб -- 19.11.2010
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346. http://www.astro.spbu.ru/staff/ilin2/INTAS/TEAMS/6-SPB2/team6
Participant 6 (P6) ================== Prof. A.Ya. ... The recent works of the team on the subject of the project are as follows: Task 1 (Light scattering theory) An important approximation for optically soft particles (S-approximation or Perel'man approximation) was developed in the paper of Perel'man ("Extinction and scattering by soft particles." ... Opt., v. 30, 475, 1991). ... Physics Lett., v. 11, 790, 1985; "Light scattering by two layers dielectric particles with continuous optical properties." ...
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Ссылки http://www.astro.spbu.ru/staff/ilin2/INTAS/TEAMS/6-SPB2/team6 -- 6.2 Кб -- 19.11.2010
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347. INTAS project 99/652: Publications
... Spectrosc., 90 , 574-579. [ abstract (in English; ASCII file); paper (in Russian; PS file)] . ... Astronomy Letters, 26 , N 10, 679-690. [ abstract (ASCII file); paper (PDF file)] . ... 2001) . ... 72 , N 5, 607-612. [ abstract (ASCII file); paper (PS file)] . ... Scattering and polarization properties of the non-spherical particles. in: Smith W.L., Timofeyev Y.M. (eds.) IRS 2000: Current Problems in Atmospheric Radiation, A.Deepak Publ. (in press) [ abstract (ASCII file); paper (PS file)] . ...
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Ссылки http://www.astro.spbu.ru/staff/ilin2/INTAS/publ.html -- 18.5 Кб -- 19.11.2010
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348. http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/TEXT/fi-irs.ps
LIGHT SCATTERING BY AXISYMMETRIC PARTICLES: A NEW APPROACH WITH THE SPECIAL CHOICE OF SCALAR POTENTIALS V.G. Farafonov St. Petersburg University of Aerocosmic Instrumentation St. Petersburg, 190000 Russia V.B. Il'in Sobolev Astronomical Institute, St. Petersburg University St. Petersburg, 198504 St. Petersburg, Russia ABSTRACT A new approach to solve the problem of light scatterґ ing by particles with an axial symmetry is developed. ... Quite different potentials were chosen by Farafonov (1983). ...
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Ссылки http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/TEXT/fi-irs.ps -- 205.2 Кб -- 19.11.2010
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349. http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/TEXT/f-os.ps
... Poskol~ku fflliptiqeskie pover- hnosti granic razdelov nekonfokal~ny, to sloi razbivaИtsи na mnoпestvo podsloev, v kaпdom iz kotoryh vyraпeniи dlи potencialov zapisyvaИtsи v svoe$i ffllipsoidal~no$i sisteme koordinat. ... Omega \Delta / C 1 2 D 1 2 ! 21) gde \Omega = [(a 2 1 \Gamma c 2 1 )(b 2 1 \Gamma c 2 1 )] 1=2 [(a 2 2 \Gamma c 2 2 )(b 2 2 \Gamma c 2 2 )] 1=2 \Delta \Lambda 2;n \Delta / 1 ~ ffi \Gamma1 1;n ( ~ L (1;n) z \Gamma ~ L (2;n) z ) 0 ~ ffi \Gamma1 1;n ~ ffi 2;n ! ...
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Ссылки http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/TEXT/f-os.ps -- 124.4 Кб -- 19.11.2010
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350. http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/TEXT/fpi-irs.ps
... Henning Friedrich Schiller University Jena, Dґ07745 Germany ABSTRACT The quasiґstatic approximation which is a generalizaґ tion of the Rayleigh and RayleighґGans approximations is considered for (layered) ellipsoids. ... Table 1: Relative errors of the quasiґstatic (QSA) and Rayleigh (RA) approximations for threeґlayered confocal ellipsoids of difґ ferent size parameter xV . ... Farafonov, V. G., 2000: Light scattering by multiґlayered ellipsoids in the Rayleigh approximation. ...
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Ссылки http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/TEXT/fpi-irs.ps -- 192.4 Кб -- 19.11.2010
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351. http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/TEXT/v-irs.ps
SCATTERING AND POLARIZATION PROPERTIES OF THE NONґSPHERICAL PARTICLES Nikolai V. Voshchinnikov Astronomy Department and Sobolev Astronomical Institute, St. Petersburg University, 198504 St. PetersburgґPeterhof, Russia ABSTRACT The albedo and dichroic polarization of spheroidal particles are studied. ... 3.2 Asymmetry parameter Another characteristic of scattered radiation is the asymmetry parameter describing the spatial distribution of scattered radiation around a particle. ...
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Ссылки http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/TEXT/v-irs.ps -- 639.1 Кб -- 19.11.2010
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352. http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/TEXT/vs-pazh.pdf
... 2, St. PetersburgґPeterhof, 198904 Russia Received January 28, 2000 Abstract--The temperatures of prolate and oblate spheroidal dust grains in the envelopes of stars of various spectral types are calculated. ... The temperature ratio Td(spheroid)/Td(sphere) depends most strongly on the grain chemical composition and shape. Spheroidal grains are generally colder than spherical particles of the same volume; only iron spheroids can be slightly hotter than iron spheres. ... Astrophys., ...
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Ссылки http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/TEXT/vs-pazh.pdf -- 473.3 Кб -- 19.11.2010
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353. http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/TEXT/fip-os.ps
... TO PODTWERVDAETSQ TEM, УTO DANNOE PRIBLIVENIE DLQ SILXн NO WYTQNUTYH ILI SPL@SNUTYH ODNORODNYH SFEROIDOW DAET GLAWNYJ УLEN ASIMPTOTIKI RASSEQNNOGO POLQ OTNOSITELXNO OTNO[ENIQ IH POLUOSEJ [8]. w DANNOJ STATXE MY RASPROSTRANQEM KWAZISTATIУESKOE PRIBLIVENIE NA MNOGOSLOJNYE ``LLIPSOIDALXNYE УASTICY I PRIWODIM WYRAVENIQ DLQ ``LEMENTOW AMPLITUDNOJ MATRICY RASSEQNIQ I SEУENIJ RASSEQNIQ I POGLO]ENIQ KAK W OB]EM SLUУAE, TAK I ... 30 ffi . ... 1 L (N) j ffl N ffl N (L (N) j \Gamma 1) ! ...
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Ссылки http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/TEXT/fip-os.ps -- 222.5 Кб -- 19.11.2010
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354. http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/TEXT/pea-mst.ps
Light scattering by multiґlayered ellipsoidal particles in the quasistatic approximation B Posseltyz, V G Farafonovx, V B Il'inz and M S Prokopjevaz y Friedrich Schiller University, Schillergaesschen 2ґ3, Jena, Dґ07745 Germany z Sobolev Astronomical Institute, St.Petersburg University, Bibliotechnaya pl.2, St.Petersburg 198504, Russia x St.Petersburg University of Aerocosmic Instrumentation, Bol.Morskaya 67, St.Petersburg 190000, Russia Eґmail: vi2087@vi2087.spb.edu Abstract. ... i\Gamma1 ! ...
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Ссылки http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/TEXT/pea-mst.ps -- 290.6 Кб -- 19.11.2010
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355. http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/TEXT/f-os4.ps
o primenimosti metoda tґ matric i ego modifikacij c fl 2000 G. w. g. fARAFONOW \Lambda \Lambda gOSUDARSTWENNYJ UNIWERSITET A``ROKOSMI?ESKOGO PRIBOROSTROENIQ, sANKTґpETERBURG, rOSSIQ pOSTUPILA W REDAKCI@ 05.06.2001 G. aNALITI?ESKI I ?ISLENNO ISSLEDOWANA OBLASTX PRIMENIMOSTI METODA tґ MATRIC I EGO MOґ DIFIKACIJ DLQ RE[ ENIQ ZADA ?I RASSEQNIQ ``LEKTROMAGNITNOGO IZLU ? ... p 2 + 1), A ''RELEEWSKIMI'' -- PRI a=b ! ... p 2; (73) A DLQ WNUTRENNIH ZADA? -- PRI a ! ...
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Ссылки http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/TEXT/f-os4.ps -- 249.4 Кб -- 19.11.2010
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356. http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/TEXT/sv-irs.ps
MODELLING OF POLARIZATION PROPERTIES OF COMETARY DUST GRAINS D.A. Semenov and N.V. Voshchinnikov Astronomy Department and Sobolev Astronomical Institute, St. Petersburg University, St. Petersburg, 198504 St. PetersburgґPeterhof, Russia ABSTRACT Observational data for dusty comets are summarized and systemized. The dependence of the linear polarizaґ tion on various parameters (the phase angle, wavelength, etc.) is analyzed. ... 1987: Dust in comet P/Halley from Vega observations. ...
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Ссылки http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/TEXT/sv-irs.ps -- 333.5 Кб -- 19.11.2010
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357. http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/TEXT/fi-mst.ps
On checking the calculations of the optical properties of nonґspherical particles V G Farafonovy and V B Il'inz y St.Petersburg University of Aerocosmic Instrumentation, Bol.Morskaya ul. ... On checking the calculations of the optical properties 2 1. ... We also announce the database of optical properties of nonґspherical particles that is currently being developed and will be useful not only for testing codes but also for other applications of the light scattering theory. ...
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Ссылки http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/TEXT/fi-mst.ps -- 329.1 Кб -- 19.11.2010
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358. http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/TEXT/f-os3.ps
... Narиdu s dekartovo$i vvedem sferoidal~nuИ sistemu (И; j; '), koordinaty kotoro$i svиzany s dekartovymi sleduИwim obrazom [21]: x = d 2 (И 2 \Upsilon f) 1=2 (1 \Gamma j 2 ) 1=2 cos '; y = d 2 (И 2 \Upsilon f) 1=2 (1 \Gamma j 2 ) 1=2 sin '; (1) z = d 2 Иj; gde f = 1, И 2 [1, 1), j 2 [--1, 1], ' 2 [0, 2п) dlи vytиnutyh i f = \Gamma1, И 2 [0, 1), j 2 [--1, 1], ' 2 [0, 2п) dlи splИsnutyh koordinat; d -- fokusnoe rasstoиnie. ... j , k j = p '' j \Delta ? ... j+1 \Delta (1) j;j+1 R 1;j+1 \Gamma / ? ...
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Ссылки http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/TEXT/f-os3.ps -- 170.4 Кб -- 19.11.2010
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359. http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/TEXT/fpi-mst.ps
Light scattering by multiґlayered axisymmetric particles V G Farafonovy, M S Prokopjevaz and V B Il'inz y St.Petersburg University of Aerocosmic Instrumentation, Bol.Morskaya ul. ... The numerical code developed has shown that the solution really allows a treatment of axisymmetric particles of quite different internal structures (e.g., combinations of a spherical core, a prolate spheroidal layer and an oblate spheroidal mantle). ... Light scattering by multiґlayered axisymmetric particles 2 1. ...
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Ссылки http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/PUBL/TEXT/fpi-mst.ps -- 350.8 Кб -- 19.11.2010
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360. http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/CONF/ABSTR/fi-irs.txt
LIGHT SCATTERING BY AXISYMMETRIC PARTICLES: A NEW APPROACH WITH THE SPECIAL CHOICE OF SCALAR POTENTIALS V.G. Farafonov St.Petersburg University of Aerocosmic Instrumentation St.Petersburg, 190000 Russia and V.B. Il'in Sobolev Astronomical Institute, St.Petersburg University St.Petersburg, 198504 St.Petersburg, Russia ABSTRACT A new approach to solve the problem of light scattering by particles with an axial symmetry is developed. ... The work was partly supported by INTAS (grant 99/652). ...
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Ссылки http://www.astro.spbu.ru/staff/ilin2/INTAS/P3-SPB1/CONF/ABSTR/fi-irs.txt -- 2.2 Кб -- 19.11.2010
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