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  • 06.05.2005. Dalekoe kol'co Einshteina
  • 07.04.2005. Disk vokrug Vegi
  • 26.03.2005. Ten' Luny
  • 23.03.2005. Novyi rentgenovskii pul'sar v ostatke sverhnovoi
  • 22.03.2005. Eshe o blinnoi teorii ...

    Soderzhanie i bystryi perehod k razdelam obzora


    Stat'i nedeli
    "Luchshie iz luchshih"

  • astro-ph/0512105
    Issledovanie kratnosti zvezd s ekzoplanetami
  • astro-ph/0512157
    Skol'zyashii obzor XMM-Newton: shirokougol'nyi obzor na energiyah 0.2-12 keV
  • astro-ph/0512194
    Ogranicheniya na al'ternativy sverhmassivnym chernym dyram

    Otdel'nye stat'i
  • Tekushie i budushie nablyudeniya v rentgenovskom i gamma- diapazonah: Chandra, Suzaku, GLAST, i NuSTAR
  • Biologicheskie effekty gamma-vspleskov: kriticheskie rasstoyaniya dlya naneseniya vreda biosfere
  • Vozdeistvie "neitrinnogo udara" na vzryvy sverhnovyh
  • Effekt gravitacionnoi otdachi dlya chernyh dyr, formiruyushihsya v ierarhicheskoi vselennoi
  • Issledovanie kratnosti zvezd s ekzoplanetami
  • Skol'zyashii obzor XMM-Newton: shirokougol'nyi obzor na energiyah 0.2-12 keV
  • Teleskop MAGIC
  • Ogranicheniya na al'ternativy sverhmassivnym chernym dyram
  • Naskol'ko neveroyaten sudnyi den'?


    Iz razdela physics
  • NIR detektorov chastic


    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 2001-2003 gg.
  • Obzory preprintov astro-ph

    Vypusk N121
    astro-ph za 01 - 10 dekabrya 2005 goda: izbrannye stat'i

    Referaty otdel'nyh statei



    miniobzor astro-ph/0512012 Tekushie i budushie nablyudeniya v rentgenovskom i gamma- diapazonah: Chandra, Suzaku, GLAST, i NuSTAR (Recent and Future Observations in the X-ray and Gamma-ray Bands: Chandra, Suzaku, GLAST, and NuSTAR)
    Authors: Greg Madejski
    Comments: To appear in "Astrophysical Sources of High Energy Particles and Radiation", eds. T. Bulik, B. Rudak, and G. Madejski, AIP Conference Proceedings, vol 801 (2005), proc. conf. in Torun, Poland, 20-24 June 2005

    Opisany nekotorye rezul'taty nablyudenii na Chandre. Nemnogo rasskazano ob uzhe zapushennom yaponskom sputnike Suzaku (izvestnom takzhe pod imenem Astro-E2). U etogo sputnika, k sozhaleniyu, voznikli tehnicheskie problemy, iz-za chego odin iz samyh interesnyh eksperimentov na ego bortu ostanetsya neosushestvlennym. V konce stat'i kratko opisany dve budushie missii: GLAST i NuSTAR. GLAST budet zapushen uzhe v 2007 g., s nim, vrode by, vse v poryadke. NuSTAR dolzhen poletet' v 2009, no etot srok eshe mozhet byt' skorrektirovan (v storonu bolee pozdnego zapuska, razumeetsya).


    astro-ph/0512013 Biologicheskie effekty gamma-vspleskov: kriticheskie rasstoyaniya dlya naneseniya vreda biosfere (Biological Effects of Gamma-Ray Bursts: Critical distances for severe damage on the biota)
    Authors: Douglas Galante, Jorge Ernesto Horvath
    Comments: 27 pages, 3 figure, submitted to Astrobiology

    Rassmotreny biologicheskie (otricatel'nye, razumeetsya) effekty kosmicheskih gamma-vspleskov. Pokazano, chto dazhe s rasstoyaniya poryadka 100 kpk takie sobytiya opasny dlya zhizni na Zemle. A vot gigantskie vspleski istochnikov myagkih povtoryayushihsya gamma-vspleskom mogut nanesti usherb tol'ko, esli rasstoyanie mezhdu Zemlei i istochnikom sostavit 100 pk ili menee. Tak chto mozhno zhit' spokoino.


    astro-ph/0512033 Vozdeistvie "neitrinnogo udara" na vzryvy sverhnovyh (Effects of neutrino-driven kicks on the supernova explosion mechanism)
    Authors: Chris L. Fryer, Alexander Kusenko
    Comments: 22 pages including 8 figures, submitted to ApJ, version with high resolution figures can be found at this http URL

    Kak izvestno, pri svoem rozhdenii vo vzryvah sverhnovyh neitronnye zvezdy poluchayut "tychki" (udary, tolchki, kiki - kicks). Prichin dlya etogo mozhet byt' neskol'ko, naprimer - nesimmetrichnoe izluchenie neitrino. Avtory rassmotreli, kak takie "neitrinnye udary" mogut povliyat' na dinamiku vzryva. Pokazano, chto vklad neitrino pomogaet ustroit' nastoyashii vzryv s vybrosom. Konechno, eto eshe ne znachit, chto osnovnye problemy mehanizma vzryva sverhnovyh resheny ...


    astro-ph/0512073 Effekt gravitacionnoi otdachi dlya chernyh dyr, formiruyushihsya v ierarhicheskoi vselennoi (The Effect of Gravitational Recoil on Black Holes Forming in a Hierarchical Universe)
    Authors: N. I. Libeskind, S. Cole, C. S. Frenk, J. C. Helly
    Comments: 12 pages, 7 figures, Submitted to MNRAS

    Avtory obsuzhdayut sledstviya togo, chto chernye dyry pri sliyanii mogut priobretat' lineinyi moment. Ya ob etom rasskazyval v proshlom godu: astro-ph/0402056, astro-ph/0408492.

    Osnovnoi vyvod stat'i sostoit v tom, chto neskol'ko procentov chernyh dyr mogut pokidat' galaktiki i vyletat' v mezhgalakticheskoe prostranstvo. Krome togo, okolo poloviny chernyh dyr budut "boltat'sya" v galo galaktiki.

    Osobo otmechu, chto nakonec-to v pechati vyskazana ideya, kotoraya davno grela moe serdce, no po ryadu prichin razvit' ee ne udalos'. Eto ideya o tom, chto ul'tramoshnye istochniki mogut byt' svyazany s takimi bluzhdayushimi chernymi dyrami promezhutochnyh mass. Kratko ob etom mozhno pochitat' v moei stat'e na Astronete (v dorabotannom vide stat'ya byla opublikovana v zhurnale Vselennaya. Prostranstvo. Vremya. ).

    O sliyaniyah chernyh dyr sm. takzhe eshe bolee svezhuyu rabotu astro-ph/0512123.


    astro-ph/0512105 Issledovanie kratnosti zvezd s ekzoplanetami (Multiplicity-Study of Exoplanet Host Stars)
    Authors: M. Mugrauer, R. Neuhuser, T.Mazeh, E. Guenther
    Comments: 3 pages, 1 figure

    Avtory prodolzhayut poisk kompan'onov u zvezd, imeyushih planety. Imi naideno 6 komponentov na shirokih orbitah. T.o. polnoe chislo dvoinyh zvezd s ekzoplanetami vozroslo do 20. Poisk kompan'ona u belogo karlika Gl86 ne dal polozhitel'nogo rezul'tata.


    astro-ph/0512157 Skol'zyashii obzor XMM-Newton: shirokougol'nyi obzor na energiyah 0.2-12 keV (The XMM-Newton Slew Survey: a wide-angle survey in the 0.2 - 12 keV band)
    Authors: M. J. Freyberg et al.
    Comments: 6 pages, 6 figures, to appear in the proceedings of "The X-ray Universe 2005", San Lorenzo de El Escorial (Spain), 26-30 September 2005

    Ya uzhe upominal ob etom obzore, no togda eto byl tol'ko proekt. Sut' v tom, chto poka HMM perenavoditsya, on vse ravno chto-to da vidit. Iz-za togo, chto HMM - eto ochen' moshnyi pribor, dazhe neskol'kih sekund, poka vzglyad N'yutona skol'zit po nebu, dostatochno dlya togo, chtoby poluchit' dannye na urovne sputnikov, zapuskavshihsya v 80-90-e gg. T.o. uchenye nadeyutsya sdelat' "skol'zyashii" obzor neba. Poka predstavleny rezul'taty po 6300 kvadratnym gradusam. Zaregistrirovano okolo 4000 istochnikov. Zhdem pervogo kataloga!


    miniobzor astro-ph/0512184 Teleskop MAGIC (The MAGIC Telescope)
    Authors: Ciro Bigongiari (for the MAGIC collaboration)
    Comments: 4 pages, 2 figures To be published on proceedings of HEP2005 International Europhysics Conference on High Energy Physics EPS (July 21st-27th 2005) in Lisboa, Portugal

    Vot uzhe god rabotaet teleskop MAGIC. Eto samyi krupnyi gamma-teleskop. Poka, k sozhaleniyu, nikakih superrezul'tatov na nem ne polucheno, i, na moi vzglyad, proekt H.E.S.S. ego obgonyaet. Tem ne menee, krupnyi instrument eshe "vystrelit". Poka zhe mozhno pochitat' kak tam vse ustroeno i chto uzhe udalos' uvidet'.


    astro-ph/0512194 Ogranicheniya na al'ternativy sverhmassivnym chernym dyram (Constraints on Alternatives to Supermassive Black Holes)
    Authors: M. Coleman Miller
    Comments: 5 pages including 1 figure, accepted by MNRAS

    Kak izvestno, ne smotrya na to, chto koncepciya chernyh dyr schitaetsya bolee chem standartnoi, poluchit' pryamye dokazatel'stva ih sushestvovaniya ochen' trudno. Poetomu dostatochno vazhno obsuzhdat' vozmozhnye al'ternativy.

    V sluchae sverhmassivnyh chernyh dyr v yadrah galaktik takih al'ternativ neskol'ko: skopleniya dvoinyh ili odinochnyh slabosvetyashihsya zvezd, ekzoticheskie sverhmassivnye ob'ekty i t.d. V stat'e pokazano, chto mozhno zakryt' neskol'ko vozmozhnyh al'ternativ. T.e. nalichie chernyh dyr stanovitsya vse bolee neizbezhnym. V chastnosti, pokazano, chto skoplenie dvoinyh kompaktnyh ob'ektov ne reshaet problemu. Dovol'no bystro ono dolzhno privesti k obrazovaniyu chernoi dyry.

    Eshe odna stat'ya na blizkuyu temu, no uzhe v prilozhenii k centru nashei Galaktiki, opublikovana Broderikom i Narayanom. Eti avtory privodyat dopolnitel'nye argumenty v pol'zu togo, chto central'noe massivnoe telo ne mozhet imet' poverhnosti (t.e. yavlyaetsya chernoi dyroi).


    astro-ph/0512204 Naskol'ko neveroyaten sudnyi den'? (How unlikely is a doomsday catastrophe?)
    Authors: Max Tegmark, Nick Bostrom
    Comments: 3 pages, 1 fig

    Skoree pessimisticheskaya zametka. Avtory pokazyvayut, chto vsyakie global'nye katastrofy bolee veroyatny, chem ocenivalos' ranee, t.k. avtory ne uchityvali tot prostoi effekt selekcii, chto my sami poka sushestvuem. Tem ne menee, avtory pokazyvayut, chto v blizhaishii milliard let mozhno osobenno ni o chem ne bespokoit'sya. Tochnee tak, bespokoit'sya mozhno hot' seichas, no veroyatnost' togo, chto chto-to proizoidet v 2006 g. sostavlyaet poryadka odnoi milliardnoi.




    My budem starat'sya hotya by perechislit' interesnye (dlya shirokoi publiki) stat'i, poyavivshiesya v razdele physics (vklyuchaya cross-listing).

    physics/0512004 NIR detektorov chastic (Particle Detector R&D)
    Authors: M.V.Danilov
    Comments: Review Talk at the Lepton and Photon Symposium, Uppsala, 2005

    Opisany nauchno-issledovatel'skie razrabotki (NIR, angl. variant R&D - research and development) po sozdaniyu novyh detektorov elementarnyh chastic. Osoboe vnimanie udeleno kremnievomu fotoumnozhitelyu (Silicon Photomultiplier).


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