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The R.A.P.Project "Prosto o slozhnom" Nemnogo statistiki Predydushii vypusk (N51) ANKa Dnya Slovar' astroterminov Spisok missii i teleskopov Obzory UFN Stat'i SOZh Novosti nedeli Gde gusto, a gde pusto: himicheskie elementy v galaktikah ANKa Dnya 29.07.2003. Ploskost' Galaktiki v zhestkom diapazone Soderzhanie i bystryi perehod k razdelam obzora Stat'i nedeli "Luchshie iz luchshih" astro-ph/0308005 Linii zheleza v spektre kvazara na krasnom smeshenii z=6.4 astro-ph/0308093 Raspredelenie massy i pyli v diske spiral'noi galaktiki-linzy Otdel'nye stat'i Linii zheleza v spektre kvazara na krasnom smeshenii z=6.4 Poletnye kalibrovki pribora IBIS/PICsIT Otkryty li neulovimye praroditeli sverhnovyh Ia? Opticheskie, ul'trafioletovye i infrakarasnye nablyudeniya rentgenovskih dvoinyh Centr dannyh INTEGRALa Probuzhdayushayasya Vselennaya Metod ocenki mass chernyh dyr v akkreciruyushih sistemah Gamma-istochniki na vysokih shirotah Ochen' blizkie karlikovye nepravil'nye galaktiki skrytye Mlechnym Putem Kinematicheskaya struktura okolozvezdnyh obolochek B[e]-zvezd nashei Galaktiki Raspredelenie massy i pyli v diske spiral'noi galaktiki-linzy Iz razdela physics Budushee dokazatel'stvo dlya fiziki 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.): 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 s 2001 g. Obsudit' na forume Scientific.RU Obsudit' na forume Zvezdocheta Avtory proekta Sergei Popov Mihail Prohorov Postav'te u sebya nashu knopku! Proekt razmeshen na saitah: Vy mozhet takzhe razmestit' na svoem saite nashu lentu obzorov Novostnye lenty Novosti astronomii ot PRAO Tekushie otkrytiya v FECh Novosti kosmonavtiki Novosti ot UFN Informnauka Perst Podpiska na rassylku obzorov na Subscribe.Ru

Obzory preprintov astro-ph Vypusk N52 astro-ph za 01 - 09 avgusta 2003 goda: izbrannye stat'i Referaty otdel'nyh statei astro-ph/0308005 Izluchenie zheleza v kvazare SDSS J114816.64+525150.3 na z=6.4 (Iron Emission in the z=6.4 Quasar SDSS J114816.64+525150.3) Authors: A.J. Barth, P. Martini, C. H. Nelson, L. C. Ho Comments: 6 pages, To appear in ApJ Letters Izuchenie spektra dalekogo kvazara pokazalo, chto vplot' do krasnogo smesheniya 6.4 soderzhanie zheleza izmenyaetsya nesil'no. Eto oznachaet, chto osnovnye proizvoditeli zheleza - sverhnovye tipa Ia - poyavilis' uzhe na krasnyh smesheniyah z > 10 (ob etih sverhnovyh sm. stat'yu "Have the Elusive Progenitors of Supernovae Type Ia Been Discovered?" - astro-ph/0308018). Krome togo, avtory popytalis' ocenit' massu chernoi dyry, nahodyasheisya v centre kvazara. Ona okazalas' ravnoi primeno 109 - 1010 solnechnyh mass. Po vsei vidimosti kvazar svetit pochti na predele svoih vozmozhnostei, t.e. svetimost' blizka k predel'noi (t.n. eddingtonovskoi), kotoraya v osnovnom opredelyaetsya massoi central'nogo ob'ekta. astro-ph/0308013 Poletnye kalibrovki pribora IBIS/PICsIT (In-flight calibrations of IBIS/PICsIT) Authors: G. Malaguti et al. Comments: 5 pages, 7 figures. Accepted for publication on A&A Special Issue on First Science with INTEGRAL INTEGRAL - nedavno zapushennaya mezhdunarodnaya kosmicheskaya observatoriya, kotoraya s nachala 2003 goda vedet nablyudeniya v zhestkom rentgenovskom i gamma-diapazonah. Na bortu INTEGRAL'a ustanovleno neskol'ko razlichnyh teleskopov. PICsIT (Pixellated Imaging CaeSium Iodide Telescope) - Mnogopiksel'nyi cezii-iodnyi teleskop - rabotayushii v samom zhestkom diapazone detektor teleskopa IBIS. On sostoit iz 4096 nezavisimyh detektorov izlucheniya ploshad'yu 0.7 sm3 kazhdyi, registriruyushih fotony v diapazone energii ot 175 keV do 10 Mev. Etot detektor obladaet ochen' vysokim otnosheniem signal/shum, chto pozvolyaet provodit dlitel'nye (do 105-106 s) nablyudeniya. Odnako parametry, kotorymi budet obladat' teleskop na orbite mogut otlichat'sya ot teh, chto predpolagalis' dlya nego na Zemle. Dlya vyyavleniya etih razlichii sluzhat procedury "kalibrovki na orbite", rezul'tatam kotoryh posvyashena dannaya stat'ya. astro-ph/0308018 Otkryty li neulovimye praroditeli sverhnovyh Ia? (Have the Elusive Progenitors of Supernovae Type Ia Been Discovered?) Authors: Mario Livio, Adam Riess Comments: 5 pages Sverhnovye tipa Ia tak ili inache dolzhny byt' svyazany s belymi karlikami. V spektrah etih vzryvayushihsya zvezd net vodorodnyh linii, krome togo oni chasto vstrechayutsya v ellipticheskih galaktikah, gde v dannoe vremya malo massivnyh zvezd. Chto zhe zastavlyaet belyi karlik vzryvat'sya? Osnovnyh idei po etomu povodu dve: akkreciya na belyi karlik i sliyanie dvuh belyh karlikov. Nablyudeniya sverhnovoi SN 2002ic na pervyi vzglyad podderzhivayut pervuyu ideyu - delo v tom, chto v spektre byli zamecheny linii vodoroda - Halpha. Odnako v etoi korotkoi zametke avtory pokazyvayut, chto vse ne tak-to prosto, i vtoroi scenarii - sliyanie dvuh belyh karlikov - takzhe mozhet udovletvoryat' poluchennym dannym. obzor astro-ph/0308020 Opticheskie, ul'trafioletovye i infrakarasnye nablyudeniya rentgenovskih dvoinyh (Optical, ulatraviolet and infrared observations of X-ray binaries) Authors: P. A. Charles (Southampton University) and M. J. Coe (Southampton University) Comments: 52 pages, 40 figs Etot obzor - odna iz glav (pyataya) novoi, eshe ne vyshedshei knigi "Kompaktnye zvezdnye istochniki". Glava posvyashena nablyudeniyam razlichnyh tipov rentgenovskih dvoinyh sistem v diapazonah ot infrakrasnogo do ul'trafioletovogo. V pervoi chasti obzora rassmotreny massivnye rentgenovskie dvoinye, vo vtoroi - malomassivnye. S primerami iz nablyudenii real'nyh sistem rassmotren celyi ryad interesnyh voprosov: rentgenovskie novye, povedenie sistem vo vremya vspyshek, spektroskopiya, himsostav zvezdy-donora i t.p. astro-ph/0308047 Centr dannyh INTEGRALa (ISDC) (The INTEGRAL Science Data Centre (ISDC)) Authors: T.J.-L. Courvoisier et al. Comments: 5 pages, 2 figures. Accepted for publication in A&AL (INTEGRAL issue) Sputnik INTEGRAL ochen' vazhen dlya evropeiskoi astronomii. Krome togo, on ochen' vazhen dlya Rossii. Pervym rezul'tatam etoi kosmicheskoi observatorii budet posvyashen special'nyi nomer Astronomy & Astrophysics. V etoi stat'e rasskazyvaetsya o edinom centre dannyh sputnika. Observatoriya yavlyaetsya mnogofunkcional'noi, ispoveduyushei politiku otkrytyh dannyh (spustya nekotoroe vremya posle nablyudenii vse materialy stanovyatsya dostupnymi mirovomu soobshestvu). Vse eto trebuet bystrogo i kachestvennogo predostavleniya dannyh vsem zhelayushim. Imenno etoi rabotoi zanimaetsya centr dannyh. gr-qc/0307112 Probuzhdayushayasya Vselennaya (The Emergent Universe: An Explicit Construction) Authors: George F.R. Ellis, Jeff Murugan, Christos G. Tsagas Comments: 10 pages, 6 eps figures Perevod nazvaniya ne vpolne dosloven, odnako horosho peredaet sut'. Avtory razvivayut svoyu model', v kotoroi Vselennaya kak by probuzhdaetsya iz metastabil'nogo t.n. einshteinovskogo sostoyaniya, posle chego sleduet inflyaciya i dalee obychnyi standartnyi scenarii. Sobstvenno, v standartnom scenarii vse bolee-menee horosho do inflyacii (dazhe, mozhno skazat', do inflyacii vklyuchitel'no). No chto bylo do? Privlekatel'noi vyglyadit ideya tem ili inym sposobom izbezhat' singulyarnosti. V ramkah mnogih modelei na urovne teorem dokazana neizbezhnost' singulyarnosti, no est' i drugie varianty. V chastnosti, esli vselennaya zakryta, to singulyarnosti mozhno izbezhat'. Sovremennye izmereniya dayut parametr plotnosti 1.02+/-0.02. S odnoi storony eto sil'nyi argument v pol'zu ploskoi modeli, i ne zrya ona naibolee populyarna. S drugoi storony takoi rezul'tat pozvolyaet "protashit'" kak otkrytuyu, tak i zakrytuyu model'. Poslednyuyu vozmozhnost' i issleduyut avtory. astro-ph/0308057 Metod ocenki mass chernyh dyr v akkreciruyushih sistemah (A Method for Black Hole Mass Determination in Accretion Powered X-Ray Sources) Authors: Chris Shrader, Lev Titarchuk Comments: 15 pages, 3 tables, 6 figures. Accepted for publication in ApJ, 1st of August Avtory predlagayut metodiku, pozvolyayushuyu po dannym o zhestkom (rentgenovskom) spektre akkreciruyushih chernyh dyr, opredelyat' ih massu. Provedennoe sravnenie s istochnikami raznyh tipov (ot tesnyh dvoinyh do aktivnyh yader galaktik) govorit o horoshei tochnosti ocenok. Avtory polagayut, chto takim sposobom mozhno budet poluchat' ocenki mass chernyh dyr v nekotoryh tipah aktivnyh yader galaktik, dlya kotoryh obychnymi metodami eto sdelat' ne udaetsya. obzor astro-ph/0308069 Gamma-istochniki na vysokih shirotah (Gamma-ray sources at high latitudes) Authors: Diego F. Torres Comments: 36 pages, 7 figures. Chapter prepared for the book "Cosmic Gamma-ray Sources", edited by K.S. Cheng and G.E. Romero, to be published by Kluwer Academic Press Rech' idet o vysokih galakticheskih shirotah, t.e. ob oblastyah neba vne ploskosti Mlechnogo Puti. Vdali ot diska nashei Galaktiki gamma-istoyanikami mogut byt' kak vnegalakticheskie ob'ekty, tak i chto-to, naselyayushee galo Galaktiki, naprimer, molekulyarnye oblaka. Avtor rassmatrivaet vse eti varianty, a takzhe daet podrobnoe opisanie imeyushihsya dannyh (v pervuyu ochered' s pribora EGRET). astro-ph/0308080 Ochen' blizkie karlikovye nepravil'nye galaktiki skrytye Mlechnym Putem (A Neighboring Dwarf Irregular Galaxy Hidden by the Milky Way) Authors: Philip Massey et al. Comments: 19 p., 5 fig. Scheduled for the November 2003 issue of AJ Nasha Galaktika (Mlechnyi Put') dostatochno bogata pyl'yu, krome togo ee zvezdy yarko svetyatsya, poetomu v nekotoryh mestah na nebe byvaet ochen' trudno zametit' dazhe dostatochno blizkie i bol'shie po ploshadi, no ne ochen' yarkie galaktiki mestnoi gruppy. V rezul'tate chego mozhno "neozhidanno" otkryt' ochen' blizkuyu neizvestnuyu galaktiku, i takoe sluchalos' uzhe ne raz. Nablyudeniya podobnoi, otkrytoi tol'ko v 2000 g., blizkoi karlikovoi irregulyarnoi galaktiki HIZSS 3 v radio i opticheskom diapazone proveli avtory dannoi raboty. Galaktiku, udalennuyu ot nas na rasstoyanie okolo 1.8 Mpk, ne udalos' razreshit' na zvezdy, no v nei byla obnaruzhena H II oblast' (oblast' ionizovannogo vodoroda), veroyatno, vokrug zony zvezdoobrazovaniya. Sleva - radioizobrazhenie galaktiki HIZSS 3, sprava - karta ee luchevyh skorostei. obzor astro-ph/0308087 Kinematicheskaya struktura okolozvezdnyh obolochek B[e]-zvezd nashei Galaktiki (Kinematical structure of the circumstellar environments of galactic B[e]-type stars) Authors: F.-J. Zickgraf Comments: 42 p., 16 figs. Astronomy & Astrophysics, in press Massivnye B i Be zvezdy obladayut moshnymi vetrami, kotorye formiruyut vokrug nih obolochki. Kakova ih struktura? Kak menyaetsya skorost' veshestva s radiusom? Vse eti kinematicheskie svoistva mozhno issledovat' po profilyam linii razlichnyh himicheskih elementov. Ispol'zovanie mnogih linii s raznymi energiyami vozbuzhdeniya neobhodimo, chtoby prosledit' strukturu obolochek na bol'shom intervale rasstoyanii, gde temperatura veshestva zametno menyaetsya. V dannom obzore vy naidete, kak opisanie procedur izmereniya, tak i obshirnyi nablyudatel'nyi material, teoreticheskie predskazaniya vozmozhnyh struktur profilei linii i interpretaciya nablyudatel'nyh dannyh v ramkah razlichnyh modelei obolochek i diskov. Teoreticheski profili linii v dostatochno realistichnoi modeli okolozvezdnoi obolochki. astro-ph/0308093 Raspredelenie massy i pyli v diske spiral'noi galaktiki-linzy (Mass and dust in the disk of a spiral lens galaxy) Authors: J.N.Winn et al. Comments: ApJ, in press [9pp, 7 figs] Gravitacionnoe linzirovanie - moshnyi instrument izucheniya raspredeleniya veshestva v prostranstve. My pisali o nem neodnokratno. Odnako, izvestno vsego neskol'ko sluchaev, kogda linzoi yavlyaetsya spiral'naya galaktika. Odin iz primerov pered vami: dva izobrazheniya kvazara PMN J2004-1349 - rezul'tat gravitacionnogo linzirovaniya na lezhashei na luche zreniya spiral'noi galaktike. Odno iz izobrazhenii kvazara prosvechivaet skvoz' spiral'nuyu vetv' galaktiki-linzy (iz-za etogo ego blesk oslablyaetsya primerno na 3 zvezdnyh velichiny), chto pozvolyaet izuchit' raspredelenie pyli v ee diske. Sleva i sprava - dva izobrazheniya kvazara PMN J2004-1349, v centre - spiral'naya galaktika-linza. Pravoe izobrazhenie kvazara zametno oslableno poglosheniem v spiral'noi vetvi galaktiki. Na bolee kontrastnom izobrazhenii (na uvelichennom foto sprava) vidny eshe dva ob'ekta. My budem starat'sya hotya by perechislit' interesnye (dlya shirokoi publiki) stat'i, poyavivshiesya v razdele physics (vklyuchaya cross-listing). physics/0308021 Budushee dokazatel'stvo dlya fiziki: Sohranenie zapisei SLAC (Future Proof for Physics: Preserving the Record of SLAC) Authors: Jean Marie Deken Comments: Invited talk presented at Future proof: delivering scientific archives in the twenty-first century (Co-operation on the Archives of Science), 4/9/2003-4/11/2003, Edinburgh, Scotland. 13 pages, 2 figures Stat'ya predstavlyaet soboi priglashennyi doklad na konferencii, posvyashennoi nauchnym arhivam. V nei rasskazyvaetsya ob arhivah SLAC - Stanford Linear Accelerator Center. V SLAC ser'ezno ozabotilis' problemoi arhivov v 80-e gg. Seichas materialy v znachitel'noi chasti dostupny cherez Internet, chto yavlyaetsya sushestvennoi osobennost'yu horoshego sovremennogo nauchnogo arhiva. Otmetim, chto v svyazi s tem, chto bol'shoe chislo sovremennyh nauchnyh materialov sushestvuyut tol'ko v elektronnoi forme, problema ih sohraneniya dlya budushego yavlyaetsya osobenno ostroi. Vernut'sya k nachalu stranicy

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