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The R.A.P.Project "Prosto o slozhnom" "Astro-ph za 2006 g." Nemnogo statistiki Predydushii vypusk (N152) Slovar' astroterminov Spisok missii i teleskopov Obzory UFN Stat'i SOZh ANKa Dnya 14.03.2007. Taina kolec sverhnovoi 06.03.2007. BL Lac v zhestkom gamma 21.09.2006. Vspyshka vnegalakticheskogo magnitara ili korotkii gamma-vsplesk? 23.08.2006. Chernaya koshka obnaruzhena 13.04.2006. On bol'she Plutona! 07.04.2006. Disk vokrug anomal'nogo pul'sara 29.03.2006. Samyi dalekii gamma-vsplesk: mesto rozhdeniya 22.03.2006. Vega krutitsya volchkom 21.03.2006. Tri goda raboty WMAP 03.03.2006. S chem mozhno pereputat' sverhnovuyu? Soderzhanie i bystryi perehod k razdelam obzora Stat'i nedeli "Luchshie iz luchshih" astro-ph/0703516 Vozmozhnyi cikl aktivnosti u Proksima Centavra astro-ph/0703595 Vzglyad Chandra na slivayushiesya galaktiki astro-ph/0703629 Kolichestvennoe sravnenie spektrov sverhnovyh tipa Ia na malyh i bol'shih krasnyh smesheniyah astro-ph/0703751 Zametka o kosmologicheskih teoriyah s peremennoi skorost'yu sveta Otdel'nye stat'i K raspredelennym petaflopnym vychisleniyam Anizotropiya kosmicheskogo mikrovolnovogo fona do vtorogo poryadka Relyativistskaya modificirovannaya n'yutonovskaya dinamika iz teorii strun? Vozmozhnyi cikl aktivnosti u Proksima Centavra Anizotropiya postoyannoi Habbla po dannym proekta Kosmicheskogo teleskopa po vnegalakticheskim rasstoyaniyam Vzglyad Chandra na slivayushiesya galaktiki Modelirovanie magnito-rotacionnogo kollapsa yadra v ramkah OTO s uchetom effektov mikrofiziki Kolichestvennoe sravnenie spektrov sverhnovyh tipa Ia na malyh i bol'shih krasnyh smesheniyah Nablyudeniya solnechnoi hromosfery Vvedenie v zvezdnuyu koronografiyu Novyi reliz biblioteki ELODIE: versiya 3.1 Gigantskii vsplesk za dva goda do kollapsa yadra massivnoi zvezdy Nedra Solnca - struktura, vrashenie, cikl solnechnoi aktivnosti Struktura i evolyuciya malomassivnyh zvezd: obzor i otkrytye problemy Fizika reliktovogo fona Zametka o kosmologicheskih teoriyah s peremennoi skorost'yu sveta Stryngbotichnaya model' vselennoi: reshenie problemy kosmologicheskoi postoyannoi Polnyi Arhiv predydushih vypuskov. Arhiv statei, voshedshih v vypuski s 01 iyulya 2002 g. po 31 marta 2003 g. Arhiv na 14.04.2006 odnim failom (36.9 Mb; *.tar.gz) gzip homepage Razdely arhiva (s aprelya 2003 g.): kosmologiya, neitrino, kosmicheskie luchi i gamma-astronomiya, galaktiki, AYaG, kvazary, nasha Galaktika, mezhzvezdnaya sreda, zvezdy, sverhnovye, ostatki sverhnovyh, chernye dyry, neitronnye zvezdy, linzirovanie, Solnce, ekzoplanety, Solnechnaya sistema, akkreciya, tesnye dvoinye sistemy, gamma-vspleski, gravitacionnye volny, mehanizmy izlucheniya, chislennoe modelirovanie, dinamika, mehanika metody obrabotki dannyh, MGD, metody nablyudenii, budushie nablyudatel'nye proekty, prochee. Poleznye astronomicheskie ssylki. Korotkoe esse ob elektronnyh preprintah. Obzornye stat'i v astro-ph 2001-2003 gg. Obsudit' na forume Scientific.RU Obsudit' na forume Zvezdocheta Avtor proekta Sergei Popov Diskussii po stat'yam Arhiva PhysComments CosmoCoffee Postav'te u sebya nashu knopku! Proekt razmeshen na saitah: Smotri takzhe diskussii i blogi: Informacionnye partnery Vy mozhet takzhe razmestit' na svoem saite nashu lentu obzorov Novostnye lenty Novosti kosmonavtiki Novosti Nauchpopa Novosti ot UFN Informnauka Researcher@ Elementy.Ru Grani.Ru Perst Podpiska na rassylku obzorov na Subscribe.Ru Druzhestvennye rassylki: "Astronomiya segodnya" "Okno vo Vselennuyu" Spisok astrorassylok

Obzory preprintov astro-ph Vypusk N153 astro-ph za 20 - 31 marta 2007 goda: izbrannye stat'i Referaty otdel'nyh statei obzor astro-ph/0703485 K raspredelennym petaflopnym vychisleniyam (Towards Distributed Petascale Computing) Authors: A. G. Hoekstra, et al. Comments: 20 pages, To appear in D. Bader (Ed.) Petascale, Computing: Algorithms and Applications, Chapman & Hall / CRC Press, Taylor and Francis Group "Vpered, k pobede kommunizma!" (s) Chto-to v etom duhe prihodit v golovu v svyazi s nazvaniem stat'i. Avtory obsuzhdayut raspredelennye vychisleniya (grid computing) s proizvoditel'nost'yu poryadka petaflop v sekundu. Grid computing trebuet razrabotki special'nyh algoritmov. Avtory kratko ih obsuzhdayut i razvernuto illyustriruyut. Etot podhod aktualen dlya samyh raznyh oblastei. Stat'ya poyavilas' imenno v astronomicheskoi chasti Arhiva, poskol'ku chast' avtorov yavlyaetsya astrofizikami, i primer dlya illyustracii oni vybrali astronomicheskii - modelirovanie galaktiki. lekciya astro-ph/0703496 Anizotropiya kosmicheskogo mikrovolnovogo fona do vtorogo poryadka (Cosmic Microwave Background Anisotropies up to Second Order) Authors: Nicola Bartolo et al. Comments: 53 pages, LaTeX file. Lectures given by S.M. at Les Houches Summer School - Session 86: Particle Physics and Cosmology: The Fabric of Spacetime, Les Houches, France, 31 Jul - 25 Aug 2006. To appear in the Proceedings V lekcii privoditsya podrobnyi vyvod uravnenii, pozvolyayushih rasschityvat' evolyuciyu anizotropii reliktovogo izlucheniya. Soderzhanie ochen' tehnicheskoe. Tem ne menee, dlya specialistov budet ochen' polezno i interesno. hep-th/0703156 Relyativistskaya modificirovannaya n'yutonovskaya dinamika iz teorii strun? (Relativistic Modified Newtonian Dynamics from String Theory?) Authors: Nick Mavromatos, Mairi Sakellariadou Comments: 5 pages S odnoi storony, nablyudeniya stalkivayushihsya skoplenii galaktik dali stol' sil'nye argumenty v pol'zu sushestvovaniya temnoi materii, chto sporit' s etim vse slozhnee i slozhnee. S drugoi storony, "za borodu" chasticy temnoi materii ne poimany, znachit, po merkam teorii elementarnyh chastic i analogichnyh ei, kotorye privykli bazirovat'sya na dannyh laboratornyh (uskoritel'nyh i tp.) eksperimentov, eshe nichego okonchatel'no ne dokazano. Pri etom, blagodarya rabote Bekenshteina, modificirovannaya n'yutonovskaya gravitaciya (MOND) perezhila vtoroe rozhdenie posle poyavleniya teorii TeVeS. Teoreticheskaya privlekatel'nost' poslednei ochen' velika, nesmotrya na to, chto, vo-pervyh, est' dannye nablyudenii, kotorye MOND bez uhishrenii opisat' ne mozhet, a vo-vtoryh, dlya TeVeS net, kak govoryat, mikrofizicheskoi motivacii. Vot razresheniyu poslednei problemy i posvyashena stat'ya. Avtory pokazyvayut, chto teorii tipa TeVeS mogut voznikat' v nekotoryh variantah teorii strun. Takzhe avtory obsuzhdayut, kak neitrino mogut igrat' rol' v poyavlenii temnoi energii. Takzhe otmechu, chto na pervoi stranicy privedeno ochen' udachnoe, kak mne pokazalos', opisanie TeVeS. astro-ph/0703516 Vozmozhnyi cikl aktivnosti u Proksima Centavra (A possible activity cycle in Proxima Centauri) Authors: Carolina Cincunegui, Rodrigo F. Daz, Pablo J. D. Mauas Comments: 7 pages, including 8 figures and 2 tables, Astronomy & Astrophysics, Volume 461, Issue 3, January III 2007, pp.1107-1113 Periodicheskaya aktivnost', tipa solnechnogo 11-letnego cikla, izvestna u mnogih zvezd spektral'nyh klassov ot F do K. Avtory popytalis' naiti nechto podobnoe u Proksimy Centavra. Eto malen'kaya zvezdochka klassa dM5.5e. Vozmozhno, chto takoi cikl taki otkryt. Period ego sostavlyaet 442 dnya. Obsudit' v ZhZh-soobshestve ru_astroph. Obsudit' na Astroforume v Nauchnoi panorame. astro-ph/0703556 Anizotropiya postoyannoi Habbla po dannym proekta Kosmicheskogo teleskopa po vnegalakticheskim rasstoyaniyam (Anisotropy in the Hubble constant as observed in the HST Extragalactic Distance Scale Key Project results) Authors: M. L. McClure, C. C. Dyer Comments: 23 pages, 5 figures, to be published in New Astronomy Skazhu srazu, na moi vzglyad, rezul'tat nuzhdaetsya v proverke i podtverzhdenii. Krome togo, eto imenno nablyudatel'nyi rezul'tat. Vopros o ego interpretacii - eto voobshe otdel'noe delo. Itak, avtory obnaruzhili anizotropiyu v rasshirenii vselennoi. Konkretno, obnaruzheny variacii postoyannoi Habbla na urovne 9 km/s/Mpk na masshtabah 10-20 gradusov. Rezul'tat poluchen po galaktikam, nahodyashimsya dal'she nashego sverhskopleniya. (Vnutri nashego sverhskopleniya anizotropiya, konechno, tozhe est', no tut eto vse estestvenno i ozhidaemo). V zaklyuchenii stat'i avtory podcherkivayut, chto voobshe govorya, takaya anizotropiya - eto takzhe ozhidaemyi rezul'tat. Esli ona i vpryam' sushestvuet na urovne poryadka 10 km/s/Mpk, to eto ob'yasnyaet, pochemu raznye proekty ne mogut "dogovorit'sya" o znachenii postoyannoi Habbla na tom zhe urovne tochnosti. Obsudit' v ZhZh-soobshestve ru_astroph. Obsudit' na Astroforume v Nauchnoi panorame. astro-ph/0703595 Vzglyad Chandra na slivayushiesya galaktiki (The Chandra View of Galaxy Mergers) Authors: N. J. Brassington, T. J. Ponman, A. M. Read Comments: 20 pages, 18 figures, accepted for publication in MNRAS. Opisany dannye nablyudenii devyati slivayushihsya galaktik na raznoi stadii sliyaniya. Analiz rezul'tatov pozvolyaet ustanovit' evolyuciyu rentgenovskoi svetimosti pri sliyanii. Pokazano, chto maksimum prohoditsya primerno za 300 millionov let do sliyaniya yader. astro-ph/0703597 Modelirovanie magnito-rotacionnogo kollapsa yadra v ramkah OTO s uchetom effektov mikrofiziki (General relativistic simulations of magneto-rotational core collapse with microphysics) Authors: P. Cerd-Durn, J. A. Font, H. Dimmelmeier Comments: 25 pages, 14 figures, submitted to Astronomy & Astrophysics on March 7, 2007 Predstavleny rezul'taty raschetov sverhnovoi dlya magnito-rotacionnogo mehanizma. Kak ya uzhe ne raz podcherkival, nakonec-to etot mehanizm stal aktivno issledovat'sya raznymi gruppami. Vse eto yasnyi primer togo, kak razvitie vychislitel'noi tehniki (imeetsya vvidu ne tol'ko "zhelezo", no i "soft") privodit k detalizacii modelei i rassmotreniyu bolee shirokogo spektra mehanizmov. astro-ph/0703629 Kolichestvennoe sravnenie spektrov sverhnovyh tipa Ia na malyh i bol'shih krasnyh smesheniyah (Quantitative comparison between Type Ia supernova spectra at low and high redshifts: A case study) Authors: G. Garavini et al. (The Supernova Cosmology Project) Comments: accepted for publication on A&A Kak izvestno, uskorennoe rasshirenie vselennoi bylo otkryto v 1998 godu imenno po rezul'tatam nablyudenii sverhnovyh tipa Ia na bol'shih krasnyh smesheniyah. S drugoi storony izvestno, chto s samogo nachala voznikla diskussiya o tom, mozhno li schitat' sverhnovye na bol'shih z (pod bol'shimi imeyutsya vvidu znacheniya tipa 0.2-0.3 i vyshe) takimi zhe, kak sverhnovye "vokrug nas" (t.e. na z<0.1). V dannoi stat'e avtory provodyat kolichestvennoe issledovanie etogo voprosa. Byla ispol'zovana vyborka iz 12 sverhnovyh na bol'shih krasnyh smesheniyah (primerno ot 0.2 do 0.9). Ih spektry sravnivali so spektrami blizkih sverhnovyh. Lish' odna iz 12 okazalas' "inoi". Vse ostal'nye dalekie sverhnovye vpolne pohozhe na svoih blizkih k nam rodstvennikov. T.o., kosmologicheskim rezul'tatam, poluchennym po sverhnovym tipa Ia, mozhno verit'. Otmechu, chto uzhe neskol'ko let nazad rezul'taty po dinamike rasshireniya vselennoi byli nezavisimo polucheny (v polnom soglasii s rezul'tatami po sverhnovym) s pomosh'yu sovershenno nezavisimyh metodik. Tem ne menee, vazhno napryamuyu pokazyvat', chto sverhnovye tipa Ia mogut byt' ispol'zovany kak instrument dlya izucheniya vselennoi. Sm. takzhe svezhuyu rabotu astro-ph/0703656, posvyashennuyu novym dannym po spektram sverhnovyh. obzor astro-ph/0703637 Nablyudeniya solnechnoi hromosfery (Observing the Solar Chromosphere) Authors: Robert J. Rutten Comments: 22 pages, "Physics of Chromospheric Plasmas" (Coimbra), ASP 368, 27 (2007) V obzore razbirayutsya dve temu: formirovanie hromosfernyh linii i poluchenie izobrazhenii hromosfery. miniobzor astro-ph/0703655 Vvedenie v zvezdnuyu koronografiyu (Introduction to stellar coronagraphy) Authors: A. Ferrari, R. Soummer, C. Aime Comments: 11 pages Zamechatel'nyi obzor po zvezdnoi koronografii. Nachinaetsya vse s ponyatnogo ob'yasneniya osnov, no potom dayutsya i neobhodimye detali. katalog astro-ph/0703658 Novyi reliz biblioteki ELODIE: versiya 3.1 (New release of the ELODIE library: Version 3.1) Authors: Ph. Prugniel et al. Comments: 8 pages Predstavlen novyi reliz biblioteki zvezdnyh spektrov ELODIE. Biblioteka soderzhit pochti 2000 spektrov zvezd. Sama biblioteka dostupna zdes'. astro-ph/07036663 Gigantskii vsplesk za dva goda do kollapsa yadra massivnoi zvezdy (A giant outburst two years before the core-collapse of a massive star) Authors: A. Pastorello et al. Comments: 15 pages, 4 figures (supplementary information included). Accepted for publication in Nature "Po-o-o-o-o-oberegis'!" Primerno tak nekotorye massivnye zvezdy "soobshayut" o gryadushem v skorom vremeni vzryve sverhnovoi. V pechati uzhe poyavlyalis' soobsheniya o nablyudeniyah t.n. prekursorov, t.e. predvestnikov vzryva sverhnovoi. Vse oni imeli mesto dlya sverhnovyh tipa II. V etoi stat'e avtory soobshayut o nablyudenii prekursora sverhnovoi tipa Ib. Za dva goda do vzryva proizoshla moshnaya vspyshka, nablyudavshayasya v optike. Poka neponyatno, chto stalo prichinoi vspyshki. Obsudit' v ZhZh-soobshestve ru_astroph. Obsudit' na Astroforume v Nauchnoi panorame. obzor astro-ph/0703711 Nedra Solnca - struktura, vrashenie, cikl solnechnoi aktivnosti (The solar interior - radial structure, rotation, solar activity cycle) Authors: Axel Brandenburg Comments: 45 pages, 17 figures, to appear in Handbook of Solar-Terrestrial Environment, eds. Y. Kamide & A. C.-L. Chian, Springer Detal'nyi obzor po strukture Solnca i ego magnitnomu polyu. obzor astro-ph/0703724 Struktura i evolyuciya malomassivnyh zvezd: obzor i otkrytye problemy (Structure and Evolution of Low-Mass Stars: An Overview and Some Open Problems) Authors: M. Catelan Comments: 52 pages, 6 figures. Invited review, to appear in "XIth Special Courses at the National Observatory of Rio de Janeiro" (AIP Conf. Proc.), ed. J. Alcaniz, R. de la Reza, F. Roig, & D. F. Lopes Kak izvestno, evolyuciya massivnyh i malomassivnyh zvezd protekaet po-raznomu. V dannom obzore zhiznennyi put' malomassivnoi zvezdy rassmatrivaetsya ot nachala do konca - ot zarozhdeniya zvezdy v oblake do ostyvayushego belogo karlika. obzor astro-ph/0703730 Fizika reliktovogo fona (Why CMB physics?) Authors: Massimo Giovannini Comments: 179 pages, 27 figures Obrazovanie v raznyh stranah ustroeno po-raznomu. U nas aspiranty poka kak pravilo "proslushivayut" nekii filosofskii kurs, podtyagivayut angliiskii (kotorym k aspiranture pora by vladet' horosho) - i vse. Seichas obsuzhdaetsya vopros o tom, ne nuzhno li aspirantam chitat' special'nye kursy. Koe-gde ih uzhe i chitayut. Chitayut ih i v drugih stranah, naprimer v Italii. Odnako, chitat' - malo. Horosho by oformlyat' lecture notes i vykladyvat' ih v dostupnoe mesto. Imenno tak i postupil Massimo Dzhiovannini so svoim kursom po fizike reliktovogo izlucheniya. astro-ph/0703751 Zametka o kosmologicheskih teoriyah s peremennoi skorost'yu sveta (Note on Varying Speed of Light Cosmologies) Authors: George F R Ellis Comments: 6 pages; to appear in the GRG Journal Korotkaya zametka, soderzhashaya nekotoryi obshii podhod k kritike kosmologicheskih teorii s peremennoi skorost'yu sveta. Avtor ukazyvaet nekotorye klyuchevye voprosy, na kotorye chetko dolzhna otvechat' lyubaya teoriya s peremennoi skorost'yu sveta: 1. Kak v teorii vyglyadit procedura izmereniya rasstoyanii? 2. Kak v teorii opisyvaetsya sobstvennoe vremya (t.e., kak izmereniya vremeni i koordinat svyazany s metrikoi)? 3. Vsyakaya teoriya, v kotoroi izmenyaetsya predel'naya skorost', yavlyaetsya ne lorenc-invariantnoi. Znachit, nado chetko opisyvat', chto poluchaetsya vzamen. 4. Teoriya, v kotoroi skorost' fotonov peremenna, dolzhna predlozhit' al'ternativu uravneniyam Maksvella. 5. Nakonec, teoriya dolzhna chetko demonstrirovat' svoyu soglasovannost', chtoby skorost' sveta odinakovym obrazom vela sebya v raznyh uravneniyah. T.e., nel'zya ogranichivat'sya rassmotreniem kakih-to otdel'nyh effektov. pervoe aprelya astro-ph/0703774 Stryngbotichnaya model' vselennoi: reshenie problemy kosmologicheskoi postoyannoi (The Stryngbohtyk Model of the Universe: a Solution to the Problem of the Cosmological Constant) Authors: Jordi Miralda-Escude Comments: 11 pages Kak uzhe ne raz byvalo, pod svetlyi prazdnik pervogo aprelya v Arhiv vykladyvayutsya zamechatel'nye feikovye stat'i. Miral'da-Eskude parodiruet kosmologicheskie stat'i i predstavlyaet svoyu stryngbotichnuyu (Stryngbohtyk) model'. Etimologiya slova vozvoditsya k katalonskomu estambotic, chto oznachaet "ekstravagantnoe i smeshnoe". Sredi drugih statei stoit otmetit' astro-ph/0703783, gde avtory predlagayut dopolnitel'nye "temnye" komponenty, a takzhe astro-ph/0703806, posvyashennuyu "analizu" anizotropii reliktovogo izlucheniya. Obsudit' v ZhZh-soobshestve ru_astroph. Obsudit' na Astroforume v Nauchnoi panorame. Vernut'sya k nachalu stranicy

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