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  • 11.10.2004. N'yuton smotrit na M31
  • 05.10.2004. Million sekund Kassiopei A
  • 18.09.2004. Rozhdenie lacertidy
  • 16.09.2004. Planeta okolo korichnevogo karlika

    Soderzhanie i bystryi perehod k razdelam obzora


    Stat'i nedeli
    "Luchshie iz luchshih"

  • astro-ph/0411450
    Temp sverhnovyh na edinicu massy

  • astro-ph/0411507
    Dinamika pul'sarov: peresmotr modeli magnitnogo dipolya

  • astro-ph/0411796
    PSR J1756-2251: novaya relyativistskaya dvoinaya neitronnaya zvezda


    Goryachie temy nedeli

  • GALEX

    Otdel'nye stat'i
  • Issledovaniya s instrumentami Virtual'noi Observatorii
  • Izuchenie obrazovaniya kompaktnyh ob'ektov i nachal'nyh skorostei otdachi I. Metody vychislenii i sluchai istochnika GRO J1655-40
  • Otvechayut li kiki sverhnovyh za vybros rentgenovskih dvoinyh iz molodyh skoplenii?
  • Temp sverhnovyh na edinicu massy
  • Ierarhicheskoe sliyanie, ul'tramoshnye i gipermoshnye rentgenovskie istochniki
  • Dinamika pul'sarov: peresmotr modeli magnitnogo dipolya
  • Grelka dlya stareyushih neitronnyh zvezd
  • Strapel'ki v kosmicheskih luchah
  • Ot Edelweiss-I k Edelweiss-II
  • Vvedenie v galakticheskoe dinamo
  • MASTER: Mobil'naya Astronomicheskaya Sistema TEleskopov-Robotov
  • PSR J1756-2251: novaya relyativistskaya dvoinaya neitronnaya zvezda


    Iz razdela physics
  • Opisanie i razvitie eksperimentov Neitrinnaya fabrika i Beta Puchok
  • Mnogougol'nye steny i astronomicheskaya orientaciya Akropolya Alatri (Italiya)
  • Solnechnye neitrino
  • Special'naya teoriya otnositel'nosti dlya shkol'nikov
  • Gubitel'noe vliyanie nacistskogo rezhima na nauku - bibliometricheskii analiz


    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 N92
    astro-ph za 15 - 30 noyabrya 2004 goda: izbrannye stat'i

    Goryachie temy nedeli


    GALEX

    My uzhe pisali ob orbital'nom ul'trafioletovom teleskope GALEX. Na etoi nedele poyavilas' seriya rabot, v kotoryh opisyvayutsya rezul'taty, poluchennye v eksperimente GALEX.

    Nachnem s obzornyh statei The Galaxy Evolution Explorer: A Space Ultraviolet Survey Mission i The On-Orbit Performance of the Galaxy Evolution Explorer. Daetsya obzor teleskopa, zapushennogo v kosmos v aprele 2003 g.

    Zatem predstavleno neskol'ko rezul'tatov, poluchennyh za vremya raboty sputnika. Eto nablyudeniya galaktik M32 (sputnik Tumannosti Andromedy) - astro-ph/0411304, M83 - astro-ph/0411306, M82 i NGC 253 (eto dve galaktiki s moshnym zvezdoobrazovaniem) - astro-ph/0411309, M31 i M33 - astro-ph/0411311.

    Drugie raboty mozhno naiti zdes'. Vse oni voidut v special'nyi vypusk Astrophysical Journal Letters. Ssylki na vse publikacii po GALEX mozhno naiti zdes'.



    Referaty otdel'nyh statei


    astro-ph/0411333 Issledovaniya s instrumentami Virtual'noi Observatorii (Science with Virtual Observatory Tools)
    Authors: P. Padovani
    Comments: 10 pages, 2 figures, invited talk at the Astronomical Data Analysis Software & Systems XIV, Pasadena, USA, October 2004, P. L. Shopbell, M. C. Britton, and R. Ebert, in press

    Prodolzhaetsya sozdanie/razrabotka proekta Virtual'noi observatorii. Sut' proekta v tom, chtoby mnozhestvo dannyh nablyudenii (imeyutsya vvidu arhivy) byli by dostupny astronomam cherez set' v edinom formate. Razumeetsya, rezul'taty s novyh missii i teleskopov budut potom popadat' v bazu Virtual'noi observatorii. Uzhe polucheny pervye rezul'taty.

    Avtor predstavlyaet original'nye rezul'taty, poluchennye s pomosh'yu prototipa Virtual'noi observatorii. Iz dannyh GOODS udalos' vydelit' 68 ranee neizvestnyh aktivnyh yader vtorogo tipa (eto aktivnye yadra s sil'nym poglosheniem izlucheniya, vozmozhno za schet tora, vrashayushegosya vokrug central'noi sverhmassivnoi chernoi dyry).

    Takzhe sm. eshe odnu stat'yu, posvyashennuyu Virtual'noi observatorii.


    astro-ph/0411423 Izuchenie obrazovaniya kompaktnyh ob'ektov i nachal'nyh skorostei otdachi I. Metody vychislenii i sluchai istochnika GRO J1655-40 (Understanding Compact Object Formation and Natal Kicks I. Calculation Methods and the case of GRO J1655-40)
    Authors: B. Willems et al.
    Comments: 56 pages, submitted to ApJ

    Vzryv sverhnovoi otpechatyvaetsya v dal'neishei sud'be kompaktnogo ob'ekta (neitronnoi zvezdy ili chernoi dyry). Poskol'ku detal'naya teoriya vzryva eshe ne sozdana, predstavlyaetsya razumnym vosstanovit' maksimum informacii po takomu "otpechatku".

    Esli my vidim rentgenovskuyu sistemu s kompaktnym ob'ektom, to my mozhem popytat'sya vosstanovit' ego istoriyu. Seichas dlya mnogih takih sistem est' dannye o prostranstvennoi skorosti. Eto pozvolyaet ocenit' kakuyu dopolnitel'nuyu skorost' (kik) poluchil kompaktnyi ob'ekt v rezul'tate vzryva.

    Avtory dannoi stat'i namerevayutsya v budushem provesti takie rassledovaniya dlya mnozhestva dvoinyh sistem. Poka zhe predstavleny detali metody, a takzhe dana illyustraciya na primere kandidata v chernye dyry GRO J1655-40.

    Po vsei vidimosti pri svoem rozhdenii chernaya dyra poluchila nebol'shoi kik (kick - udar, tolchok), v rezul'tate chego priobrela skorost' v neskol'ko desyatkov kilometrov v sekundu. Opredelenie takogo parametra dlya neskol'kih kandidatov v chernye dyry pozvolit sushestvenno prodvinut'sya v ponimanii togo, kak chernye dyry obrazuyutsya.


    astro-ph/0411425 Otvechayut li kiki sverhnovyh za vybros rentgenovskih dvoinyh iz molodyh skoplenii? (Are Supernova Kicks Responsible for X-ray Binary Ejection from Young Clusters?)
    Authors: J. Sepinsky, V. Kalogera, K. Belczynski
    Comments: 4 pages, 1 figure. Submitted to Astrophysical Journal Letters

    Eshe odna stat'ya, posvyashennaya kikam. Sovremennye rentgenovskie nablyudeniya otlichayutsya dostatochno vysokim uglovm razresheniem. V chastnosti, eto pozvolyaet opredelyat' dostatochno tochnye polozheniya rentgenovskih istochnikov v galaktikah.

    Massivnye rentgenovskie dvoinye - eto molodye ob'ekty. Bol'shinstvo iz nih dolzhny byli obrazovyvat'sya v molodyh massivnyh zvezdnyh skopleniyah. Nablyudeniya pokazyvayut, chto istochniki neskol'ko smesheny otnositel'no skoplenii. Razumno predpolozhit', chto smeshenie svyazano s tem, chto istochniki priobreli dopolnitel'nuyu skorost' posle vzryva odnoi iz komponent sistemy. Takoe predpolozhenie neobhodimo proverit', chto i delayut avtory stat'i. Rezul'taty raschetov okazyvayutsya v sootvetstvii s gipotezoi o tom, chto imenno skorost' otdachi otvetstvenna za vybros dvoinyh sistem iz skoplenii.


    astro-ph/0411450 Temp sverhnovyh na edinicu massy (The supernova rate per unit mass)
    Authors: F. Mannucci et al.
    Comments: 10 pages, A&A, in press

    Po dannym nablyudenii avtory rasschityvayut temp sverhnovyh razlichnyh tipov dlya galaktik raznyh tipov, normiruya etu velichinu na massu galaktiki i na svetimost' v IK diapazone. Interesnym rezul'tatom yavlyaetsya sushestvennoe vozrastanie tempa sverhnovyh Ia v galaktikah pozdnih tipov (spirali i nepravil'nye galaktiki). Poyasnim vazhnost' etogo utverzhdeniya. Schitaetsya, chto sverhnovye Ia svyazany so vzryvom belogo karlika, kotoryi nabral massu ili iz-za akkrecii, ili iz-za sliyaniya s drugim belym karlikom. Takie sverhnovye tradicionno svyazyvayut so starym naselenie galaktiki (trebuetsya vremya dlya obrazovaniya belogo karlika, a takzhe dlya akkrecii znachitel'noi massy veshestva ili dlya sliyaniya). To, chto temp takih sverhnovyh sushestvenno vyshe (na edinicu massy) dlya galaktik s dostatochno aktivnym zvezdnym obrazovaniem, govorit, chto ne vse tak prosto. V chastnosti, eto nanosit udar po modeli sliyaniya dvuh belyh karlikov. Krome togo, vozmozhno, chto est' dva tipa sverhnovyh Ia: odin svyazan so starym naseleniem (eti slabye sverhnovye), drugoi -- s molodym naseleniem spiral'nyh i nepravil'nyh galaktik (eto bolee yarkie sverhnovye Ia).


    astro-ph/0411489 Ierarhicheskoe sliyanie, ul'tramoshnye i gipermoshnye rentgenovskie istochniki (Hierarchical Merging, Ultraluminous and Hyperluminous X-ray Source)
    Authors: Andrew R. King, Walter Dehnen
    Comments: accepted for publication in MNRAS, 4 pages, no figures

    Ul'tramoshnye istochniki po-prezhnemu privlekayut nashe vnimanie (snova napomnim, chto v blizhaishem nomere Zvezdocheta budet stat'ya, posvyashennaya etim ob'ektam). V dannoi rabote avtory obsuzhdayut, otkuda mozhno vzyat' chernye dyry promezhutochnyh mass, i pochemu ul'tramoshnye istochniki nablyudayutsya preimushestvenno v oblastyah zvezdoobrazovaniya.

    Ideya sostoit v tom, chto vsemu vinoi pogloshenie bol'shoi galaktikoi bolee melkih sputnikov. Chernye dyry promezhutochnyh mass - eto central'nye ob'ekty malomassvinyh galaktik. Zvezdoobrazovanie zhe provociruetsya samim sliyaniem.

    Otmetim ot sebya, chto avtory ne rassmatrivayut vopros o zahvate chernoi dyroi kompan'ona, i zdes' mogut byt' problemy. Neobhodimo, chtoby za korotkoe vremya chernaya dyra uspela zahvatit' zvezdu, a ved' zvezdu eshe nuzhno sformirovat' (ved' zvezdoobrazovanie sprovocirovano sliyaniem)! Nashi sobstvennye ocenki "na salfetke" pokazyvayut, chto tut vse velichiny na predele, a znachit nuzhno provodit' detal'noe modelirovanie.
    (Sobstvenno nasha - S.P. - ideya sostoyala v sliyanii ne s galaktikoi-sputnikom, a s ostavshimsya "pervichnym" malomassivnym galo s chernoi dyroi v centre. Zvezdoobrazovanie vyzyvaetsya udarom gaza galo o gaz diska galaktiki. Chernaya dyra slishkom bystro proletaet cherez disk galaktiki, chtoby uspet' zahvatit' novoobrazovavshuyusya zvezdu.)


    astro-ph/0411507 Dinamika pul'sarov: peresmotr modeli magnitnogo dipolya (Pulsar dynamics: magnetic dipole model revisite)
    Authors: G. Lugones, I. Bombaci
    Comments: 4 pages, 3 figures, submitted to Physical Review Letters

    Na nash vzglyad - eto vazhnaya i interesnaya rabota. Odin iz voprosov, kotoryi my zadaem sebe - "pochemu my sami ne dogadalis'?" (odin iz avtorov napisal nam, chto on sam byl udivlen, chto za 37 let izucheniya pul'sarov nikto ne sdelal takih prostyh ocenok).

    Avtory obrashayutsya k klassicheskoi modeli zamedleniya neitronnoi zvezdy. V etoi modeli vrashenie tormozitsya za schet sushestvovaniya magnitnogo polya. Ne smotrya na neprekrashayushiesya spory o detalyah processa tormozheniya, vse shodyatsya v tom, chto prostaya magnito-dipol'naya formula neploho opisyvaet deistvitel'nost'. Imenno takaya formula ispol'zuetsya dlya ocenki magnitnogo polya i vozrasta pul'sara po tempu ego zamedleniya.

    German Lugones i Ignacio Bombachi rassmotreli, chto budet, esli prosteishim obrazom uchest' neodnorodnost' vrasheniya neitronnoi zvezdy. Poluchennye rezul'taty dostatochno interesny.
    1. Magnitnoe pole okazyvaetsya raza v 4 vyshe, chem pole, opredelennoe po standartnoi formule. Eto dovol'no interesno, t.k. okolo 100 pul'sarov okazyvayutsya v oblasti sverhkriticheskogo (sverhshvingerovskogo) polya.
    2. Vozrast pul'sara, ocenivaemyi po periodu i proizvodnoi perioda, okazyvaetsya sushestvenno zavisyashim ot nachal'nogo perioda. Eto mozhet pomoch' snyat' protivorechie v raznyh ocenkah vozrasta po parametram perioda i po nablyudaemym ostatkam sverhnovyh.


    astro-ph/0411560 Grelka dlya stareyushih neitronnyh zvezd (A Hot Water Bottle for Aging Neutron Stars)
    Authors: Mark Alford et al.
    Comments: 14 pages, 5 figures

    Kvantovaya hromodinamika predskazyvaet, chto pri vysokih plotnostyah, harakternyh dlya nedr neitronnyh zvezd, veshestvo mozhet okazyvat'sya v razlichnyh interesnyh sostoyaniyah. Detali eto izucheny kraine ploho, chto svyazano kak s trudnost'yu raschetov, tak i s otsutstviem eksperimental'nyh dannyh. Poetomu fiziki vse chashe i chashe obrashayutsya k astronomicheskim dannym.

    V etoi stat'e avtory predskazyvayut, chto nalichie dazhe nebol'shogo kolichestva veshestva v odnoi iz takih interesnyh faz (my ne budem vdavat'sya v detali, chto takoe gapless color-flavour locked phase) privedet k tomu, chto ohlazhdenie zvezdy na fotonnoi stadii (kogda izluchenie neitrino uzhe ne vnosit osnovnogo vklada, a energiya unositsya fotonami s poverhnosti) poidet medlennee standartnogo. Kak budto v nedrah zvezdy est' grelka, kotoraya ne daet ei bystro ostyt'.

    Nablyudeniya neitronnyh zvezd s vozrastami poryadka milliona let (eto mogut byt' ob'ekty Velikolepnoi semerki) dolzhny v budushem dat' otvet na vopros o neobhodimosti takoi grelki.

    Sm. takzhe stat'yu po ostyvaniyu gibridnyh zvezd.


    astro-ph/0411601 Strapel'ki v kosmicheskih luchah (Cosmic ray strangelets)
    Authors: Jes Madsen
    Comments: 8 pages. SQM2004 plenary talk. Submitted to Journal of Physics G

    My neodnokratno obrashalis' k rabotam, posvyashennym strannoi materii. Napomnim, chto ishut ee (v astrofizike) v forme kvarkovyh zvezd i v forme osobogo podvida kosmicheskih luchei. "Strapel'ki" - kapel'ki strannogo veshestva - otnositsya kak raz k poslednemu.

    Osnovnoi upor v stat'e sdelan na vozmozhnoe detektirovanie strapelek v eksperimente AMS-2 na Mezhdunarodnoi kosmicheskoi stancii (napomnim, chto prototip etogo eksperimenta videl nechto, chto pri zhelanii mozhno interpretirovat' kak strapel'ki). Predskazaniya dostatochno optimistichny.

    Stat'ya napisana ochen' dostupno, formul prakticheski net. Rekomenduem.


    astro-ph/0411629 Ot Edelweiss-I k Edelweiss-II (From Edelweiss-I to Edelweiss-II)
    Authors: V.Sanglard, for the EDELWEISS collaboration
    Comments: 6 pages, 3 figures, to appear in the Proceedings of the 5th International Workshop on the Identification of Dark Matter (IDM2004), eds. N.Spooner and V.Kudryavstev

    Opisan eksperiment, ispol'zuyushii germanievye kriogennye detektory dlya poiska temnoi materii. Pervyi etap raboty ustanovki zavershen. Vperedi bolee chuvstvitel'nye nablyudeniya.


    obzor astro-ph/0411739 Vvedenie v galakticheskoe dinamo (Introduction to galactic dynamos)
    Authors: Anvar Shukurov
    Comments: 58 pages, 8 figures; to be published in "Mathematical Aspects of Natural Dynamos", EDP Press

    Kak izvestno, vo Vselennoi magnitnye polya sushestvuyu na samyh raznyh masshtabah. Est', v tom chisle, i galakticheskoe magnitnoe pole. Ono kak-to bylo sozdano, i ego postoyanno neobhodimo podderzhivat'. Na segodnyashnii den' teoriya galakticheskogo dinamo s odnoi storony dostatochno horosho razrabotana, s drugoi - est' ryad nereshennyh voprosov. Obo vsem etom - v obzore Anvara Shukurova.


    astro-ph/0411757 MASTER: Mobil'naya Astronomicheskaya Sistema TEleskopov-Robotov (MASTER: The Mobile Astronomical System of Telescope-Robots)
    Authors: V.M. Lipunov et al.
    Comments: 3 pages, 2 figures, Astronomische Nachrichten, 2004, 325, 580-582

    Kratkoe opisanie sistemy MASTER, ustanovlennoi v podmoskov'e. Kompleks prednaznachen v pervuyu ochered' dlya poiska opticheskogo izlucheniya ot gamma-vspleskov na nachal'noi stadii vspyshki. Odnako proekt mozhet davat' (i daet) i drugie interesnye rezul'taty.


    astro-ph/0411796 PSR J1756-2251: novaya relyativistskaya dvoinaya neitronnaya zvezda (PSR J1756-2251: a new relativistic double neutron star system)
    Authors: A.J.Faulkner et al.
    Comments: Accepted by ApJ Letters. 4 published pages, 3 figures and 2 tables

    Po vsei vidimosti otkryta novaya sistema, sostoyashaya iz dvuh neitronnyh zvezd, odna iz kotoryh nablyudaetsya kak radiopul'sar. Nablyudeniya pokazali, chto polnaya massa sistemy PSR J1756-2251 sostavlyaet 2.574+/-0.003 solnechnoi massy (na samom dele, poka ocenka model'no zavisima). Odin iz komponent - pul'sar - tochno yavlyaetsya neitronnoi zvezdoi. Massy neitronnyh zvezd sostavlyayut 1.2-2 solnechnye massy. Znachit, na vtoroi kompan'on prihoditsya primerno 0.6-1.4 massy solnca. Veroyatnee vsego, on yavlyaetsya malomassivnoi neitronnoi zvezdoi s massoi <1.25 massy solnca.




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

    physics/0411123 Opisanie i razvitie eksperimentov Neitrinnaya fabrika i Beta Puchok (The Neutrino Factory and Beta Beam Experiments and Development)
    Authors: The Neutrino Factory/Muon Collider Collaboration
    Comments: 115 pages; 71 figures. The Neutrino Factory and Beta Beam Experiments and Development Working Group report to the Joint DNP/DPF/DAP/DPB Study on the Future of Neutrino Physics

    Eta bol'shoi otchet po eksperimentu, gotovyashemusya kollaboraciei Neutrino Factory/Muon Collider.

    Predlozheno dve novyh eksperimental'nye ustanovki: neitrinnaya fabrika i Beta-puchok (Beta Beam). V osnovnom oni prednaznacheny dlya detal'nogo issledovaniya neitrino (v chastnosti, dlya izmereniya mass neitrino treh sortov).

    Poka ustanovki nahodyatsya v stadii razrabotki: takie eksperimenty planiruyutsya godami.

    physics/0411130 Mnogougol'nye steny i astronomicheskaya orientaciya Akropolya Alatri (Italiya) (Polygonal walls and the astronomical alignments of the Acropolis of Alatri, Italy: a preliminary investigation)
    Authors: Giulio Magli
    Comments: 12 pages, 10 figures

    Alatri - nebol'shoi ital'yanskii gorodok v oblasti Lacium (Lazio), t.e. nedaleko ot Rima.

    Avtor issleduet orientaciyu akropolya, a takzhe drevnie steny goroda. Osnovnoi vopros v tom kto i kogda vse eto postroil.

    physics/0411190 Solnechnye neitrino (Solar Neutrinos: A Popular Account)
    Authors: John N. Bahcall
    Comments: To appear in the 3rd edition of the Encyclopedia of Physics, eds. G. Trigg and R. Lerner (Wiley-VCH, Weinheim 2005)

    Stat'ya po solnechnym neitrino, napisannaya Dzhonom Bakalom dlya Enciklopedii po fizike. Navernoe, drugie kommentarii izlishni.

    V dopolnenie stoit prochest' druguyu stat'yu The Neutrino Matrix

    physics/0411219 Special'naya teoriya otnositel'nosti dlya shkol'nikov (Special Relativity for the School Going Child)
    Authors: T. P. Singh
    Comments: 15 pages, two figures. Elementary Article meant for 12-15 year old schoolchildren. Published by TIFR, Mumbai in `A revolution in physics: Einstein's 1905 discoveries made simple'

    Izlozhenie nekotoryh osnov STO v vide rasskaza dlya detei 12-15 let.

    physics/0411246 Gubitel'noe vliyanie nacistskogo rezhima na nauku - bibliometricheskii analiz (The disaster of the Nazi-power in science as reflected by some leading journals and scientists in physics - A bibliometric study)
    Authors: Manuel Cardona, Werner Marx
    Comments: 8 pages, 10 figures, 1 table

    Osnovyvayas' na dannyh ob indekse citirovaniya (po dannym Instituta Nauchnoi Informacii - ISI), avtory rassmatrivayut nauchnuyu produktivnost' uchenyh, vynuzhdennyh pokinut' fashistskuyu Germaniyu v 30-e gg.

    Sovetuem takzhe obratit' vnimanie na grafik 1 v etoi rabote.


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