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  • 04.02.2004. Rentgenogramma serdca Galaktiki

    Soderzhanie i bystryi perehod k razdelam obzora


    Stat'i nedeli
    "Luchshie iz luchshih"

  • astro-ph/0402169
    Sushestvovanie starogo kvazara na z=3.91
  • astro-ph/0402212
    Shirokougol'nyi korrektor dlya pervichnogo fokusa teleskora Richi-Kret'ena
  • astro-ph/0402255
    FALCON: koncepciya adaptivnoi opticheskoi korrekcii v protyazhennyh polyah
  • astro-ph/0402278
    Fundamental'nye aspekty rasshireniya Vselennoi i kosmicheskie gorizonty


    Otdel'nye stat'i
  • Odinochnye neitronnye zvezdy
  • Ohlazhdenie neitronnyh zvezd
  • Spektr razmerov ob'ektov poyasa Koipera, voznikayushih pri droblenii bol'shih, no neprochnyh tel
  • Gazovye potoki v tesnyh dvoinyh sistemah
  • Sushestvovanie starogo kvazara na z=3.91
  • Struktura krupnomasshtabnogo magnitnogo polya nashe Galaktiki na osnove mer vrasheniya izlucheniya pul'sarov
  • Istochniki myagkih povtoryayushihsya gamma-vspleskov i anomal'nye rentgenovskie pul'sary: naveki vmeste
  • Spektral'naya klassifikaciya i effektivnye temperatury L i T-karlikov na osnove spektrov v blizkom IK
  • Obrazovanie neitronnyh zvezd i ih nachal'nye svoistva
  • Obzor inflyacii
  • Effektivnaya temperatura goryachih zvezd: Rannie O-zvezdy
  • Shirokougol'nyi korrektor dlya pervichnogo fokusa teleskora Richi-Kret'ena
  • Dostizheniya metoda AMR v chislennoi astrofizike i kosmologii
  • 1E1207.4-5209 unikal'nyi ob'ekt
  • Geminga: rasskaz o dvuh hvostah i bolee togo
  • Kosmologicheskii teleskop Atakama
  • FALCON: koncepciya adaptivnoi opticheskoi korrekcii v protyazhennyh Kosmologicheskih polyah
  • Fundamental'nye aspekty rasshireniya Vselennoi i kosmicheskie gorizonty
  • Dvizhenie pul'sarov v Galaktike


    Iz razdela physics

  • Predely na vremennye variacii postoyannoi tonkoi struktury, mass kvarkov i i sil'nogo vzaimodeistviya po dannym o spektrah kvazarov i po eksperimentam s atomnymi chasami


    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.


    Avtory proekta
    Sergei Popov
    Mihail Prohorov



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    Sozdavaemyi katalog on-lainovoi nauchnoi literatury



  • Obzory preprintov astro-ph

    Vypusk N69
    astro-ph za 08 - 15 fevralya 2004 goda: izbrannye stat'i



    Referaty otdel'nyh statei



    obzor astro-ph/0402136 Odinochnye neitronnye zvezdy (Isolated Neutron Stars)
    Authors: V. M. Kaspi, M. S. E. Roberts, A. K. Harding
    Comments: 66 pages, 17 figures. To appear in "Compact Stellar X-ray Sources", eds. W.H.G. Lewin and M. van der Klis. Comments welcome but needed ASAP. High resolution images and Tables 8.1 and 8.2 available at http://www.physics.mcgill.ca/~vkaspi/isolated_neutron_stars

    Odnovremenno poyavilis' dva obzora po neitronnym zvezdam: etot i obzor Yakovleva i Petika po ohlazhdeniyu. V etom obzore daetsya svod dannyh po rentgenovskomu izlucheniyu ot odinochnyh neitronnyh zvezd. Ono mozhet byt' svyazano ili s vrasheniem (kak u pul'sarov), ili s vysokoi temperaturoi. Sootvetstvenno opisyvayutsya kak dannye nablyudenii, tak i teorii.


    obzor astro-ph/0402143 Ohlazhdenie neitronnyh zvezd (Neutron Star Cooling)
    Authors: D.G. Yakovlev, C.J. Pethick
    Comments: 41 pages, 12 figures, to appear in Ann. Rev. Astron. Astrophys., 2004

    Obzor prekrasno dopolnyaet vysheopisannyi material Kaspi i dr. Zdes' detal'no opisyvaetsya ohlazhdenie neitronnyh zvezd. Dannye o temperature takih ob'ektov v osnovnom poluchayutsya kak raz iz rentgenovskih nablyudenii. Tak chto obzory otlichno stykuyutsya drug s drugom.


    astro-ph/0402138 Spektr razmerov ob'ektov poyasa Koipera, voznikayushih pri droblenii bol'shih, no neprochnyh tel (Shaping the Kuiper belt size spectrum by shattering large but strengthless bodies)
    Authors: Margaret Pan, Re'em Sari (Caltech)
    Comments: 11 pages, 2 figures; submitted to Icarus

    Samye krupnye tela transneptunovogo poyasa Koipera (kotorye my tol'ko i mozhem segodnya nablyudat') imeyut stepennoe raspredelenie po razmeram. Odnako poslednie nablyudeniya ukazyvayut, chto etot spektr imeet izlom i stanovitsya kruche dlya ob'ektov s razmerami men'she primerno 70 km. Dlya ob'yasneniya takogo izloma avtory predlagayut model' posledovatel'nogo drobleniya pri stolknoveniyah, kotoruyu luchshe vsego illyustriruet privedennyi nizhe risunok.

    V rezul'tate chego v spektre razmerov poluchayutsya dva stepennyh uchastka, razdelennyh izlomom, polozhenie kotorogo menyaetsya so vremenem.


    astro-ph/0402146 Gazovye potoki v tesnyh dvoinyh sistemah (Gas flow in close binary star systems)
    Authors: K.Oka, T.Matsuda, I.Hachisu, H.Boffin
    Comments: 8 pages, 5 figures
    astro-ph/0402217 Chislennoe modelirovanie poverhnostnyh potokov na zvezdu-kompan'on v tesnyh dvoinyh sistemah. Konstruirovanie doplerovskih kart v prilozhenii k galakticheskim sverhmyagkim rentgenovskim istochnikam (Numerical Simulation of the Surface Flow on the Companion Star in a Close Binary System II. Construction of Doppler maps and application to Galactic supersoft X-ray sources)
    Authors: K.Oka, T.Matsuda, I.Hachisu, H.Boffin
    Comments: 8 pages, 9 figures, accepted in A&A

    Dve raboty odnoi i toi zhe chetverki avtorov, posvyashennye trehmernomu gidrodinamicheskomu modelirovaniyu processov peretekaniya veshestva cherez v sistemah, gde odin iz komponentov zapolnyaet polost' Rosha. Pervaya rabota ochen' szhaty obzor rezul'tatov etoi, v osnovnom yaponskoi: gruppy (hotya podobnym modelirovaniem zanimayutsya ne tol'ko oni). Vtoraya bolee podrobnaya i tehnicheskaya.


    astro-ph/0402169 Sushestvovanie starogo kvazara na z=3.91 i ego prilozhenie k kosmologii (The Existence of an Old Quasar at z=3.91 and its Implications for Lambda(t) Deflationary Cosmologies)
    Authors: J. V. Cunha (UFRN) R. C. Santos (UFRN)
    Comments: 8 pages, 2 figures, submitted to IJMPD

    Opredelit' vozrast kvazara pryamym metodom dostatochno zatrudnitel'no. Poetomu ih delyat na molodye i starye po nablyudaemym liniyam himicheskih elementov: esli v spektre kvazara nablyudaetsya Fe K skachok, a otnoshenie chisla atomov zheleza i kisloroda Fe/O v 2-5 raz prevyshaet Solnechnoe, to kvazar schitaetsya "starym", poskol'ku okruzhayushee ego veshestvo zametno obogasheno tyazhelymi elementami, voznikayushimi v hode evolyucii zvezd. Molodye kvazary i kvazary s neizvestnymi vozrastami (slishkom slabye, chtoby proizvesti neobhodimye spektral'nye nablyudeniya) izvestny dazhe na z>6. A vot samyi dalekii staryi kvazar - APM 08279+5255 byl nedavno obnaruzhen na z=3.91. Iz etogo fakta avtory dayut ogranicheniya na kosmologicheskie parametry Vselennoi (osobenno sil'nye dlya ekzoticheskoi modeli s peremennym vo vremeni Lambda-chlenom), hotya sam fakt otkrytiya takogo kvazara, veroyatno, bolee vazhen i interesen.


    astro-ph/0402170 Struktura krupnomasshtabnogo magnitnogo polya nashe Galaktiki na osnove mer vrasheniya izlucheniya pul'sarov (The Large-Scale Magnetic Field Structure of Our Galaxy: Efficiently Deduced from Pulsar Rotation Measures)
    Authors: J.L. Han (NAOC)
    Comments: 10 pages, 4 figures

    Segodnya izvestno bolee 1000 radiopul'sarov, kotorye pokryvayut vse nebo (hotya i ne odnorodno), iz izluchenie obladaem vysokoi lineinoi polyarizaciei i dlya mnogih ob'ektov izvestna mera vrasheniya - zavisyashee ot chastoty izmenenie pozicionnogo ugla ploskosti polyarizacii izlucheniya, vyzvannoe ego rasprostraneniem v zamagnichennoi mezhzvezdnoi plazme. Pul'sarov s izvestnoi meroi vrasheniya uzhe tak mnogo, chto na ih osnove udaetsya vosstanovit' krupnomasshtabnuyu strukturu magnitnogo polya vblizi ploskosti Galaktiki. Poluchennaya "karta" pokazana na risunke.


    miniobzor astro-ph/0402175 Istochniki myagkih povtoryayushihsya gamma-vspleskov i anomal'nye rentgenovskie pul'sary: naveki vmeste (Soft Gamma Repeaters and Anomalous X-ray Pulsars: Together Forever)
    Authors: V. M. Kaspi
    Comments: 8 pages, 2 figures. To appear in "Young Neutron Stars and Their Environments" (IAU Symposium 218, ASP Conference Proceedings), eds F. Camilo and B. M. Gaensler

    Odnovremenno poyavilis' srazu dva obzora po anomal'nym rentgenovskim pul'saram (ARP) i istochnikam myagkih povtoryayushihsya gamma-vspleskov (MPG). Vtoraya stat'ya (Anomalous) X-ray Pulsars posvyashena, kak yasno iz nazvaniya, v osnovnom ARP. V etoi zhe daetsya svodka po oboim tipam ob'ektov. Obsuzhdayutsya vzaimosvyazi mezhdu ARP i MPG (cherez vspyshki i drugie proyavleniya).

    Osnovnoi vyvod Viki Kaspi takov: magnetarnaya gipoteza yavlyaetsya samoi sil'noi na segodnyashnii den', odnako, somneniya ostayutsya, a potomu nuzhny bolee detal'nye i pryamye nablyudeniya.


    obzor astro-ph/0402186 Spektral'naya klassifikaciya i effektivnye temperatury L i T-karlikov na osnove spektrov v blizkom IK (Spectral Classification and Effective Temperatures of L and T Dwarfs Based of Near-Infrared Spectra)
    Authors: T.Nakajima, T.Tsuji and K.Yanagisawa
    Comments: 31 pages, 6 figures.

    Dlya samyh malen'kih zvezd, kotorye odnovremenno yavlyayutsya samymi tusklymi i holodnymi, i tem bolee dlya korichnevyh karlikov, v kotorye termoyadernye reakcii voobshe ne idut, ne hvataet obychnoi spektral'noi klassifikacii, zakanchivayusheisya zvezdami klassa M. V nee snachala byl dobavlen novyi spektral'nyi klass L, a zatem klass T. Spektral'naya klassifikaciya v etoi oblasti osnovana na analize nablyudenii v blizhnem infrakrasnom diapazone.

    V dannom obzore po dannym infrakrasnogo sputnika Subaru opredelyayutsya kriterii klassifikacii zvezd na podklassy: ot L0 do L9 i ot T0 do T8.


    miniobzor astro-ph/0402200 Obrazovanie neitronnyh zvezd i ih nachal'nye svoistva (Neutron Star Formation and Birth Properties)
    Authors: Hans-Thomas Janka
    Comments: 10 pages, 4 figures, high-quality available upon request; to appear in "Young Neutron Stars and Their Environments" (IAU Symposium 218, ASP Conference Proceedings), eds. F. Camilo and B.M. Gaensler

    Horoshii ochen' dostupnyi obzor, posvyashennyi obrazovaniyu neitronnyh zvezd. Obsuzhdayutsya naibolee standartnye vzglyady na nachal'nye svoistva etih ob'ektov: massy, periody, skorosti, magnitnye polya i t.p.


    obzor hep-th/0402051 Obzor inflyacii (Prospects of Inflation)
    Authors: Andrei Linde
    Comments: 23 pages, extended version of the talk at the Nobel Symposium "Cosmology and String Theory," August 2003

    Razumeetsya, iz goda v god Andrei Linde delaet obzornye doklady po inflyacii, i, sootvetstvenno, poyavlyayutsya obzornye stat'i. Na nash vzglyad, ego obzory - samye udachnye. Delo dazhe ne tol'ko i ne stol'ko v tom, chto eto "inflyaciya iz pervyh ruk". Prosto emu udalos' vyrabotat' nekotoryi stil', kotoryi pozvolyaet otnositel'no dostupno rasskazat' o slozhnoi idee.

    Te, kto chital predydu