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Soderzhanie i bystryi perehod k razdelam obzora
Temnoe vodorodnoe oblako v skoplenii v Deve
Gigantskaya vspyshka ot SGR1806-20 s prilozheniem k korotkim gamma-vspleskam (i drugie stat'i, posvyashennye etomu vsplesku)
Anomaliya Pionerov: spisok problem
Goryachie temy nedeli
Otdel'nye stat'i
Iz razdela physics
Polnyi Arhiv predydushih vypuskov. Arhiv statei, voshedshih v vypuski s 01 iyulya 2002 g. po 31 marta 2003 g.
Razdely arhiva (s aprelya 2003 g.): Poleznye astronomicheskie ssylki. Korotkoe esse ob elektronnyh preprintah. Obzornye stat'i v astro-ph 2001-2003 gg.
Avtory proekta
Proekt razmeshen na saitah:
Vy mozhet takzhe razmestit' na svoem saite nashu lentu obzorov Novosti astronomii ot PRAO Novosti kosmonavtiki Novosti ot UFN Astronomer.Ru Informnauka Researcher@ Grani.Ru Perst Podpiska na rassylku obzorov na Subscribe.Ru
Druzhestvennye rassylki: "Astronomiya segodnya" "Astronomiya dlya shkol'nikov" "Okno vo Vselennuyu" Spisok astrorassylok
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Obzory preprintov astro-ph
Vypusk N99
astro-ph za 15 - 28 fevralya 2005 goda: izbrannye stat'i
Goryachie temy nedeli
Vspyshka SGR 1806-20
27 dekabrya proshlogo goda proizoshla vspyshka istochnika myagkih povtoryayushihsya gamma-vspleskov SGR 1806-20. Vspyshka byla bolee chem moshnoi, poetomu dannoe sobytie popalo prakticheski vo vse novostnye lenty mira. Odna iz Astronomicheskih kartinok dnya takzhe byla posvyashena etomu yavleniyu. Krome togo, na Astronete poyavilos' neskol'ko korotkih zametok, posvyashennyh interesneishemu yavleniyu. Samye svezhie novosti v gamma-astronomii poyavlyayutsya v special'nom cirkulyare. Dlya napisaniya polnocennoi stat'i trebuetsya vremya. I vot neobhodimyi minimum vremeni proshel. Fevral' uzhe bogat na stat'i o vspyshke SGR 1805-20, o nekotoryh iz nih my rasskazyvaem nizhe.
Referaty otdel'nyh statei
Authors: Philip F. Hopkins et al. Comments: 5 pages, 4 figures, submitted to ApJ Letters V ramkah gidrodinamicheskoi modeli akkrecii na chernuyu dyru s uchetom effekta zatmeniya (zateneniya) samoi chernoi dyry gazom i pyl'yu avtory rasschityvayut aktivnoe vremya zhizni kvazara, t.e. to vremya, v techenie kotorogo my mozhem nablyudat' ego kak yarkii opticheskii ob'ekt. Rezul'taty pokazyvayut, chto harakternyi period sostavlyaet 10-20 millionov let. Eto nahoditsya v horoshem soglasii s dannymi nablyudenii. Bez ucheta oslableniya opticheskogo izlucheniya gazom i pyl'yu poluchalos' by vremya poryadka 100 millionov let. Eto vremya sootvetstvuet dlitel'nosti stadii aktivnoi akkrecii.
Authors: Eric F. Bell et al. Comments: To appear in the Astrophysical Journal 1 June 2005. 14 pages with 8 embedded figures Na Spitcerovskom kosmicheskom teleskope polucheny dannye po 1500 galaktikam na krasnyh smesheniyah ot 0.65 do 0.75. Cel'yu issledovaniya, predstavlennogo v stat'e, yavlyaetsya ponimanie togo, chto yavlyaetsya prichinoi rezkogo umen'sheniya tempa obrazovaniya zvezd na krasnyh smesheniyah men'she primerno 0.7. Odnim iz vozmozhnyh ob'yasnenii moglo by byt' men'shee chislo sil'no vzaimodeistvuyushih (slivayushihsya) galaktik na malyh krasnyh smesheniyah. Odnako dannaya rabota otvergaet takuyu vozmozhnost'. Avtory polagayut, chto naibolee veroyatnymi effektami, otvetstvennymi za umen'shenie tempa zvezdoobrazovaniya, yavlyayutsya istoshenie zapasov gaza i slabye vzaimodeistviya galaktik s nebol'shimi sputnikami.
Authors: Nino Panagia Comments: [14 pages, 4 figures] Invited review, to be published in the proceedings of the Vulcano Workshop 2004 "Frontier Objects in Astrophysics and Particle Physics", F. Giovannelli & G. Mannocchi (eds.), Italian Physical Society, Editrice Compositori, Bologna, Italy (in press) Dostatochno podrobnyi obzor tekushego sostoyaniya del v opredelenii kosmologicheskih parametrov po nablyudeniyam dalekih sverhnovyh tipa Ia. Nikakih sensacii net. Nablyudeniya podtverzhdayut model' s 70-procentnym vkladom lyambda-chlena. Tem ne menee obzor interesnyi, osobenno diskussiya o vozmozhnyh problemah etogo podhoda.
Authors: Tarun Souradeep Comments: 13 pages, 4 figures, Latex style files included; Chairperson's summary of the Workshop on Cosmology in the proceedings of ICGC-04, Jan.5-10,2004; Journal-ref: Pramana 63 (2004) 891-904 Obzor bol'shoi konferencii po kosmologii. Interesno okinut' spektr idei i podhodov, sushestvuyushei v etoi burno razvivayusheisya nauke.
Authors: A. Quirrenbach Comments: Conclusions from a workshop held February 02-06, 2004 at Leiden University; edited by A. Quirrenbach; based on contributions from the workshop participants Note: Because of astro-ph's very stringent size limits on pdf files, the resolution of the figures is poor. Contact the author for full-resolution pdf file Obsuzhdaetsya razvitie tehnologii, kotorye pozvolyat sozdat' koronograficheskie sputnikovye teleskopy dlya obnaruzheniya ekzoplanet zemnogo tipa.
Authors: E. Koerding, E. Colbert, H. Falcke Comments: Accepted for publication in A&A, 11 pages, 4 figures Avtory proveli radiomonitoring devyati blizhaishih ul'tramoshnyh rentgenovskih istochnikov (UMI) s pomosh'yu VLA. Ni postoyannogo, ni vspyshechnogo radioizlucheniya ot UMI zaregistrirovano ne bylo (obnaruzhennoe izluchenie dvuh istochnikov v M82 skoree vsego svyazano s ostatkami sverhnovyh). V principe rezul'taty nablyudenii ne pozvolyayut vybrat' odnu iz dvuh osnovnyh gipotez, ob'yasnyayushih prirodu UMI (akkreciya na chernye dyry promezhutochnyh mass ili zhe akkreciya na chernye dyry zvezdnyh mass s obrazovaniem relyativistskih dzhetov). Odnako takie nablyudeniya vazhny, mozhet byt' v dal'neishem avtoram povezet bol'she, i ih rezul'taty smogut pomoch' v vybore modeli dlya UMI.
Authors: Marina M. Romanova et al. Comments: 5 pages with 4 figures, LaTeX, macros: emulapj.sty, avi movies are available at http://www.astro.cornell.edu/us-russia/disk_prop.htm; Journal-ref: ApJ Letters, 616, L151-L154, 2004
Chestno govorya, vsegda nravilis' kartinki i fil'my, demonstriruyushie diskovuyu
akkreciyu. Na pervoi serii risunkov pokazano, kak izmenyaetsya konfiguraciya magnitnogo polya. Na levom risunke (T=0, vremya otschityvaetsya v uslovnyh edinicah, sootvetstvuyushih odnomu oborotu s keplerovskoi skorost'yu na rasstoyanii 2.86 radiusa zvezdy) pokazana nachal'naya konfiguraciya polya. Zatem nachinaetsya raschet, i vidno, kak silovye linii formiruyut "magnitnye bashni". V nizhnei chasti dano uvelichennoe izobrazhenie linii vblizi diska dlya T=70.
Na vtoroi serii risunkov prodemonstrirovano, chto nesmotrya na to, chto sistema nahoditsya na stadii propellera, kogda bystrovrashayusheesya magnitnoe pole prepyatstvuet proniknoveniya veshestva na poverhnost' zvezdy, nekotoraya akkreciya tem ne menee vozmozhna. Na srednem risunke otchetlivo vidno eto "proniknovenie".
Authors: XENON Collaboration: Elena Aprile Comments: 13 pages, 13 figures Lyudi prodolzhayut popytki laboratornoi registracii chastic temnoi materii. Opisyvaemyi eksperiment budet ispol'zovat' tonnu zhidkogo ksenona dlya registracii WIMP - slabovzaimodeistvuyushih chastic. Poka idut testy s mnogo men'shim kolichestvom ksenona, ischislyaemom lish' kilogrammami.
Authors: C. M. Gutierrez, M. Lopez-Corredoira Comments: 9 pages, Accepted for publication in ApJ Letters Nadeemsya, chto s samimi ul'tramoshnymi istochnikami nashi chitateli uzhe horosho znakomy (ili po stat'e na Astronete, ili po peredache na radio Svoboda). Vot novye rezul'taty. Avtory rassmatrivayut vopros o tom, chto mnogie iz UMI mogut yavlyat'sya fonovymi dalekimi aktivnymi yadrami galaktik. Eto osobenno aktual'no dlya ob'ektov v ellipticheskih galaktikah, a takzhe dlya istochnikov na okrainah galaktik vne oblastei moshnogo zvezdoobrazovaniya. Rassmatrivaetsya shest' istochnikov, dlya kotoryh polucheny horoshie opticheskie spektry. Vse shest' okazalis' dalekimi kvazarami. Vse shest' lezhat dostatochno daleko ot centrov svoih galaktik. Rezul'taty nahodyatsya v horoshem soglasii s bolee rannimi ocenkami. T.o., kak i predpolagalos', dlya UMI, lezhashih vne vydelennyh oblastei (spiral'nye rukava, oblasti zvezdoobrazovaniya, sharovye skopleniya i t.p.) velika dolya fonovyh.
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