The R.A.P. Project (Reviews of Astro-Ph)
Chislennoe modelirovanie
Authors: John C. Hayes, Michael L. Norman
Comments: 57 pages (including 18 eps figures); submitted to the ApJ Supplement
V stat'e predstavlen novyi kod dlya parallel'nyh vychislenii v mnogomernoi
radiacionnoi gidrodinamike (RHD). Uchityvaetsya anizotropnyi harakter polei
izlucheniya i neravnovesnye processy. Predstavleny rezul'taty testovyh
vychislenii.
Author: Jeremy Kepner, Stan Ahalt
Comments: submitted to Supercomputing 2002; 10 pages; 8 figures
MatlabMPI nikak ne svyazan s institutami Maksa Planka, eto Message Passing Interface (MPI) standart. On pozvolyaet ispol'zovat' MatLab na mnogoprocessornym komp'yuterah.
Avtory podrobno opisyvayut testy, provedennye na raznyh platformah (MatlabMPI idet vezde, gde idet sam MatLab). Obeshayut, chto ves' soft budet dostupen.
Chestno govorya, ya tol'ko ne ponyal, pochemu rebyata polozhili stat'yu v astro-ph.
;)
Authors: S. Marri, S.D.M. White
Comments: 41 pages, 8 figures. Submitted to MNRAS
V nastoyashee vremya mnozhestvo issledovatel'skih grupp po vsemu miru provodyat komp'yuternoe modelirovanie obrazovaniya galaktik. Dlya etogo ispol'zuyutsya raznye metodiki. V svoei stat'e Merri i Uait obsuzhdayut metod sglazhennyh chastic v primenenii k dannoi zadache.
Dostoinstva metoda sostoyat v tom, chto pri sushestvennyh perepadah temperatur i plotnostei net "pereohlazhdeniya" na granice razdela faz. Krome etogo raznye fazy mogut sosushestvovat' v olnoi oblasti, a takzhe vozmozhno ih otnositel'noe dvizhenie.
V rabote demonstriruetsya ustoichivost' shemy. Takzhe pokazano, chto sistema uspeshnee opisyvaet "vprysk" energii, svyazannyi s nachinayushimsya zvezdoobrazoavniem v galaktike.
Authors: R.E. Smith et al. (The Virgo Consortium)
Comments: 24 Latex Pages. Submitted for publication in MNRAS
Lyubitelyam komp'yuternogo modelirovaniya. Proekt Virgo (Velikobritaniya) predstavlyaet svoi novye rezul'taty po N-body vychisleniyam. Na ih saite http://www.mpa-garching.mpg.de/Virgo mozhno naiti bol'sheo kolichestvo sootvetstvuyushih materialov (sm. takzhe http://as1.chem.nottingham.ac.uk/~res/software.html).
Authors: S. T. Maddison et al.
Comments: 4 pages, 2 figures. To appear in the ASP Conference Series: Scientific Frontiers in Research on Extrasolar Planets, eds. D. Deming and S. Seager. Movies available from http://astronomy.swin.edu.au/maddison/research/dust/
Sozdana programma, rasschityvayushaya evolyuciyu gazovo-pylevyh potokov. Osnovnoe vozmozhnoe primenenie - raschet obrazovaniya planet.
Authors: P. Hoeflich
Comments: 14 pages+5 figures, in: Stellar Atmospheric Modeling, ASP Conference Series, eds. J. Hubeny, D. Mihalas & K. Werner
Parallel'nye vychisleniya shagayut po planete! Odnako, obychno problema takova: da, parallel'nyi kod poschitaet bystree, no vremya, neobhodimoe na izuchenie metodov parallel'nogo scheta prevoshodit raznicu vo vremeni vychislenii na obychnom i na parallel'nom komp'yutere. V svoei stat'e avtor pytaetsya uprostit' etu zadachu dlya astrofizikov-pol'zovatelei i dat' nabor otnositel'no neslozhnyh receptov dlya rasparallelivaniya vychislenii zvezdnyh atmosfer.
Authors: Christian Y. Cardall (Oak Ridge National Laboratory and University of Tennessee, Knoxville)
Commets: Contribution to the proceedings of the 4th International Workshop on the Identification of Dark Matter (IDM2002), held in York, England 2-6 September 2002, to be published by World Scientific. 10 pages, 1 figure
Izuchaya razlichnymi sposobami vzryvy sverhnovyh mozhno poluchat' ochen' raznoobraznuyu informaciyu - ot zakona rasshireniya Vselennoi i svoistv temnoi materii do uravneniya sostoyaniya neitronnogo veshestva i sushestvovaniya ekzoticheskih chastic. No dlya etogo nado horosho ponimat' kakie processy v nih proishodyat. I edinstvennyi put' zdes' - detal'noe chislennoe modelirovanie. No do segodnyashnego dnya pri modelirovanii kollapsa i vzryva sverhnovoi uchityvalis' ne vse fizicheskie processy - prosto potomu, chto dlya takih raschetov ne hvatilo by moshnosti komp'yuterov. TeraScale Supernova Initiative - proekt v kotorom v blizhaishie neskol'ko let predpolagaetsya preodolet' eti ogranicheniya.
Authors: R.J.Massey, A.R.Refregier, C.J.Conselice & D.J.Bacon
Commets: 13 pages, including 12 figures. Submitted to MNRAS. Version with higher resolution figures available from the shapelets web site at http://www.ast.cam.ac.uk/~rjm/shapelets/
Snachala byla sdelana parametricheskaya model' galaktiki, vosproizvodyashaya razlichnye vneshnie formy. Zatem bylo vyyasneno kak raspredeleny parametry etoi modeli. Teper' okazalos' vozmozhnym postroit' vyborku galaktik i vosproizvesti "deistvie" na nee teleskopa. V rabote vse eto bylo prodelano dlya togo, chtoby smodelirovat' glubokie obzory HST. No mne kazhetsya, chto etot algoritm mozhet naiti i drugie - chisto illyustrativnye - primeneniya.
Authors: Alessandro B. Romeo, Cathy Horellou, Joeran Bergh
Commets: Mon. Not. R. Astron. Soc., in press. The interested reader is strongly recommended to ignore the low-resolution Fig. 3 (and Fig. 4), and to download the full-resolution paper (700 kb) from http://www.oso.chalmers.se/~romeo/Paper_VI.ps.gz
Avtory opisyvayut metodiku "sglazhivaniya" shumov pri raschetah metodom mnogih
tel,
pozvolyayushuyu dobit'sya rezul'tatov, identichnyh uvelicheniyu chisla chastic na dva
poryadka. Sam algoritm v dannoi stat'e detal'no ne opisyvaetsya (budet
otdel'naya
publikaciya).
Authors: Peter Anninos et al.
Commets: 29 pages, 15 figures, to appear in Astrophysical Journal Supplement Series
Opisyvaetsya moguchii vychislitel'nyi kod. Stat'ya tehnicheskaya. Privodyatsya rezul'taty testovyh progonov, obsuzhdayutsya uravneniya i t.p. Budet interesno vsem, kto zanimaetsya matmodelirovaniem.
Authors: Roelof Bottema
Commets: Accepted for publication in: Monthly Notices of the Royal Astron. Soc. The astro-ph copy has a few figures with degraded resolution. A copy with high quality graphics (4281 kb) can be downloaded from the kapteyn institute weg page at http://www.astro.rug.nl (Goto preprints and preprints 2003)
Modelirovanie galaktik - neprostoe zanyatie. Dlya togo, chtoby poluchit' strukturu nedostatochno pol'zovat'sya tol'ko metodom mnogih tel, ili naoborot tol'ko gidrodinamikoi. V dannoi stat'e opisyvayutsya vychisleniya, vklyuchayushie v sebya zvezdy, gaz (s uchetom ohlazhdeniya i nagreva), zvezdoobrazovanie i sverhnovye (kotorye v svoyu ochered' vliyayut na gaz). V obshem: slozhno i interesno. Stat'ya bol'shaya (30 zhurnal'nyh stranic), zato s kartinkami....
Authors: Miguel A. de Avillez, Dieter Breitschwerdt
Commets: 7 pages, 3 Figures that include 4 simulation images (in jpeg format) and 2 plots (in ps format), to appear in the proceedings of "Star Formation Through Time" - A conference to honour Roberto J. Terlevich, ASP Conference Series
V rabote provedeno modelirovanie struktury mezhzvezdnoi sredy na raznyh masshtabah. Dostignuto vysokoe razreshenie (0.625 pk). Takzhe udalos' poluchit' strukturu, podobnuyu Mestnomu puzyryu (Local Bubble). Vazhnym rezul'tatom yavlyaetsya malaya ob'emnaya dolya goryachego gaza.
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Publikacii s klyuchevymi slovami:
astrofizika - obzory - ekzoplaneta - Planety u drugih zvezd
Publikacii so slovami: astrofizika - obzory - ekzoplaneta - Planety u drugih zvezd | |
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