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  • 26.03.2005. Ten' Luny
  • 23.03.2005. Novyi rentgenovskii pul'sar v ostatke sverhnovoi
  • 22.03.2005. Eshe o blinnoi teorii ...
  • 04.03.2005. Mira v rentgene
  • 03.03.2005. Vspyhivayushii radioistochnik

    Soderzhanie i bystryi perehod k razdelam obzora


    Stat'i nedeli
    "Luchshie iz luchshih"

  • astro-ph/0503457
    Obnaruzhenie teplovogo izlucheniya vnesolnechnoi planety

  • astro-ph/0503521
    Svyaz' mezhdu pryamym opticheskim i gamma izlucheniem gamma-vspleskov

  • astro-ph/0503554
    Infrakrasnoe izluchenie ot vnesolnechnoi planety

  • hep-th/0503203
    Fizika elementarnyh chastic i inflyacionnaya kosmologiya


    Otdel'nye stat'i
  • Sputniki Mlechnogo Puti: bol'shoi blin
  • Otkrytie 105-millisekundnogo rentgenovskogo pul'sara v Kesteven 79
  • Bystryi rost chernyh dyr v galaktikah s moshnym zvezdoobrazovaniem
  • Obnaruzhenie teplovogo izlucheniya vnesolnechnoi planety
  • Izmerenie zateneniya Lunoi potoka kosmicheskih luchei vysokih energii
  • Infrakrasnaya vspyshka ot dlinnogo gamma-vspleska
  • Vliyanie astro-ph na citirovanie v osnovnyh zhurnalah
  • Mozhet li zhizn' poyavitsya vblizi krasnyh gigiantov?
  • Svyaz' mezhdu pryamym opticheskim i gamma izlucheniem gamma-vspleskov
  • Novye issledovaniya pul'sarnoi tumannosti v ostatke sverhnovoi CTB 80
  • Chervotochiny i puteshestviya vo vremeni? Vryad li
  • Novaya karlikovaya galaktika v Bol'shoi Medvedice
  • Infrakrasnoe izluchenie ot vnesolnechnoi planety
  • GALEX: Galaxy Evolution Explorer
  • Fizika elementarnyh chastic i inflyacionnaya kosmologiya
  • Mezhzvezdnye pylevye chasticy - 75-letnii yubilei
  • Klassicheskaya zadacha mnogih tel v gravitacii
  • Sobstvennye dvizheniya karlikovyh sferoidal'nyh galaktik po dannym kosmicheskogo teleskopa im. Habbla. III: Izmereniya v Maloi Medvedice
  • Korotkaya i sub'ektivnaya istoriya kosmicheskogo teleskopa im. Spitcera
  • Klimaticheskie i biohimicheskie effekty galakticheskih gamma-vspleskov
  • Otkrytie bol'shoi (200 kpk) gazovoi tumannosti na Z=2.7
  • O periode vrasheniya Sedny
  • Kosmologicheskie predely na massu neitrino dlya ne-kosmologov


    Iz razdela physics
  • Nauchnaya eshatologiya
  • Verner Geizenberg (1901-1976)
  • Neitronnye zvezdy


    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 N102
    astro-ph za 21 - 31 marta 2005 goda: izbrannye stat'i


    Referaty otdel'nyh statei



    astro-ph/0503400 Sputniki Mlechnogo Puti: bol'shoi blin (The Satelittes of the Milky Way: The Great Pancake)
    Authors: Noam I Libeskind et al.
    Comments: 7 pages, 5 figures. Submitted to MNRAS

    Nauka dvizhetsya vpered.
    S odnoi storony rastet tochnost' raschetov formirovaniya galaktik (i krupnomasshtabnoi struktury): nachav s masshtabov v sotni Mpk, avtory programm dobralis' uzhe do masshtaba nashei galaktiki. Sootvetstvenno, v poslednie gody neskol'ko grupp astrofizikov zanimayutsya raschetami obrazovaniya Mlechnogo Puti i ego sputnikov. Zdes' voznikla interesnaya problema. Raschety predskazyvali slishkom mnogo sputnikov (bol'she, chem nablyudaetsya).

    S drugoi storony, nablyudeniya tozhe ne stoyat na meste. Postoyanno otkryvayutsya novye karlikovye galaktiki v neposredstvennoi blizosti ot nas. Krome togo, nedavno byla otkryta "temnaya galaktika" - sostoyashaya iz gaza, plotnost' kotorogo okazalas' nedostatochna dlya massovogo obrazovaniya zvezd.

    V dannoi stat'e obsuzhdaetsya sleduyushii interesnyi aspekt problemy sputnikov Mlechnogo Puti. Okazyvaetsya, chto oni raspredeleny ne sfericheski-simmetrichno, a obrazuyut dovol'no-taki ploskuyu strukturu (sm. risunok vnizu).



    Na risunkah pokazano polozhenie sputnikov Mlechnogo Puti (risunki vzyaty s saita www.astro.uu.se/~ns/). Odnako ploskaya struktura luchshe vydelyaetsya na sleduyushem risunke.

    Risunok iz stat'i astro-ph/0410421. Zdes' special'no vybrana proekciya, yasno demonstriruyushaya, chto sputniki nashei Galaktiki lezhat prakticheski v odnoi ploskosti.

    Libeskind i ego soavtory iz Velikobritanii, Kanady i Avstralii proveli chislennoe modelirovanie metodom mnogih tel (N-body) s cel'yu izucheniya prostranstvennogo raspredeleniya sputnikov galaktiki, podobnoi nashei. Rezul'taty pokazany na risunke.

    Dostatochno ochevidno, chto sputniki i v samom dele obrazuyut dovol'no ploskuyu strukturu. Delo tut vot v chem. Sputniki otslezhivayut ne prosto raspredelenie temnoi materii (vse raschety provodilis' v ramkah CDM modeli). Sputniki otmechayut samye massivnye galo. Bolee melkie (o kotoryh my pisali) ostayutsya bezzvezdnymi. Massa nabiraetsya anizotropno za schet akkrecii. Vydelennye napravleniya svyazany s filomentarnoi strukturoi. Process, vklyuchayushii takuyu strukturu pokazan na risunke.

    Vse vremya krasnymi kruzhkami otslezhivaetsya polozhenie 11-ti naibolee massivnyh sputnikov. Krasnyi otrezok pokazyvaet masshtab (on sootvetstvuet soputstvuyushei dline 400 kpk). "Blin" obrazuetsya uzhe v samom nachale za schet kollapsa temnoi materii.

    Takzhe kak i v real'noi situacii v raschetah polozhenie ploskosti, v kotoroi lezhat sputniki, okazalos' prakticheski perpendikulyarnyh ploskosti galaktiki.


    astro-ph/0503424 Otkrytie 105-millisekundnogo rentgenovskogo pul'sara v Kesteven 79 (Discovery of a 105 ms X-ray Pulsar in Kesteven 79: On the Nature of Compact Central Objects in Supernova Remnants)
    Authors: E. V. Gotthelf et al.
    Comments: 8 pages, 4 Figues. Latex, emulateapj.sty. To appear in the Astrophysical Journal

    U central'nogo kompaktnogo istochnika v ostatke sverhnovoi Kes 79 obnaruzhen period 105 millisekund. Period byl zamechen po rentgenovskim nablyudeniyam na sputnike XMM-Newton.

    Napomnim, chto v poslednie gody radiopul'sary poteryali svoi status "polnomochnyh predstavitelei" molodyh neitronnyh zvezd. Yasno, chto lish' nekotoraya (hotya i znachitel'naya) chast' molodyh neitronnyh zvezd proyavlyaet sebya kak obychnye radiopul'sary. Drugie vyglyadyat sovsem po-drugomu. Mozhno upomyanut' istochniki myagkih povtoryayushihsya gamma-vspleskov, anomal'nye rentgenovskie pul'sary, Velikolepnuyu semerku, kompaktnye istochniki v ostatkah sverhnovyh. K poslednemu klassu kak raz i otnositsya geroi rassmatrivaemoi stat'i.

    V radiodiapazone etot pul'sar ne nablyudaetsya. Bolee togo, otsutstvuet dazhe pul'sarnaya tumannost', t.e. nel'zya skazat', chto aktivnyi pul'sar est', prosto ego luch ne popadaet na nas. Po vsei vidimosti pul'sar rodilsya s periodom, blizkim k nablyudaemomu, i s ne ochen' bol'shim magnitnym polem (po krainei mere <3 1012 Gs).


    astro-ph/0503453 Bystryi rost chernyh dyr v galaktikah s moshnym zvezdoobrazovaniem (Rapid Growth of Black Holes in Massive Star-Forming Galaxies)
    Authors: D.M. Alexander et al.
    Comments: 5 pages, 2 figures, to appear in Nature on 7th April

    Kak izvestno, sushestvuet problema s tempom rosta sverhmassivnyh chernyh dyr v centrah galaktik. Sut' problemy v tom, chto uzhe na dovol'no bol'shih krasnyh smesheniyah my vidim moshnye kvazary, t.e. uzhe sformirovalis' massivnye (okolo sotni millionov mass solnca) chernye dyry. Pri etom vremeni na nabor massy u nih bylo nemnogo. Predpolagalos' sushestvovanie do-kvazarnoi stadii evolyucii, kogda obrazovyvalis' massivnye galaktiki (t.e. shlo zvezdoobrazovanie) i odnovremenno nabiralas' massa chernymi dyrami.

    Avtory issledovali v rentgenovskom diapazone dalekie galaktiki, yarkie v submillimetrovom diapazone (moshnoe izluchenie na etih dlinah voln svidetel'svuet o moshnom obrazovanii zvezd). Esli by odnovremenno chernye dyry aktivno nabirali massu, to bylo by zaregistrirovano ih rentgenovskoe izluchenie. I ono bylo zaregistrirovano!


    astro-ph/0503457 Obnaruzhenie teplovogo izlucheniya vnesolnechnoi planety (Detection of Thermal Emission from an Extrasolar Planet)
    Authors: David Charbonneau et al.
    Comments: 20 pages, 4 figures, to appear in the Astrophysical Journal, 20 June 2005

    S pomosh'yu infrakrasnyh nablyudenii na kosmicheskom teleskope im. Spitcera (Spitzer Space Telescope) vpervye neposredstvenno obnaruzheno izluchenie ekzoplanety. Rech' idet o planete TrES-1. Ona periodicheski prohodit po disku svoei zvezdy (t.e. my nahodimsya vblizi ploskosti orbity etoi sistemy). Ochevidno (osobenno tem, kto horosho znaet, kak vyglyadyat krivye bleska zatmennyh-peremennyh), chto inogda planeta prohodit ZA zvezdoi, chto mozhet privodit' k nalichiyu vtorichnogo minimuma. Tak vot vtorichnyi minimum obnaruzhen! T.e. vne minimuma planeta vnosit zametnyi (hotya i ochen' nebol'shoi) vklad v polnoe izluchenie sistemy.

    Avtory poluchayut ocenku temperatury planety (okolo 1000 gradusov Kel'vina), a takzhe utochnyayut orbital'nye parametry.

    Teoreticheskuyu interpretaciyu rezul'tatov mozhno naiti v stat'e Burrows et al. astro-ph/0503522.

    Sm. takzhe nizhe stat'yu astro-ph/0503554.


    astro-ph/0503472 Izmerenie zateneniya Lunoi potoka kosmicheskih luchei vysokih energii (Measurement of the Shadowing of High-Energy Cosmic Rays by the Moon: A Search for TeV-Energy Antiprotons)
    Authors: L3 Collaboration, P. Achard, et al
    Comments: 35 pages, CERN-PH-EP/2004-076

    Poka v CERNe bylo zatish'e s rabotoi na uskoritelyah, svyazannoe so stroitel'stvom novogo, nauchnye gruppy iskali inoe primenenie svoim sposobnostyam i apparature. V chastnosti, nekotorye obratili svoi vzor k nebu. Vselennaya, kak izvestno, - eto uskoritel' dlya bednyh.

    Komande L3 udalos' zametit' ten' ot Luny pri nablyudenii kosmicheskih luchei vysokih energii.

    Na risunke bolee svetlye mesta sootvetstvuyut deficitu sobytii. Kruzhkom pokazano polozhenie Luny.


    astro-ph/0503508 Infrakrasnaya vspyshka ot dlinnogo gamma-vspleska (A contemporaneous infrared flash from a long gamma-ray burst: an echo from the central engine)
    Authors: C. H. Blake et al.
    Comments: Accepted to Nature on March 1, 2005. 9 pages, 4 figures

    S pomosh'yu nazemnogo teleskopa-robota vpervye udalos' zaregistrirovat' rannee izluchenie gamma-vspleska v IK diapazone. Vsplesk GRB 041219a udalos' zaregistrirovat' na etih dlinnyh volnah vsego spustya 7.2 minuty posle nachala vspyshki. Bezuslovno, eti dannye pomogut luchshe ponyat' mehanizm gamma-vspleskov.

    Nizhe privodyatsya takzhe dannye ob opticheskoi vspyshke, soprovozhdavshei etot vsplesk.


    astro-ph/0503519 Vliyanie astro-ph na citirovanie v osnovnyh zhurnalah (The Rise and Citation Impact of astro-ph in Major Journals)
    Authors: Travis S. Metcalfe
    Comments: 3 pages, 1 figure, 1 table, accepted for publication in BAAS

    Pokazano, chto razmeshenie stat'i v Arhive preprintov primerno vdvoe povyshaet ee citiruemost'. T.o., dazhe esli stat'ya publikuetsya v izvestnom zhurnale, chitayut ee v osnovnom vse ravno v Arhive!

    Risknem predpolozhit', chto v nedalekom budushem za zhurnalami ostanetsya v osnovnom recenzionnaya funkciya, a chitat' stat'i budut v svobodnyh arhivah (ili zhe zhurnaly budut gorazdo shire otkryvat' dostup k elektronnym versiyam svoih statei pri nalichii kakih-to centralizovannyh mest dlya anonsov poyavivshihsya statei).


    astro-ph/0503520 Mozhet li zhizn' poyavitsya vblizi krasnyh gigiantov? (Can Life develop in the expanded habitable zones around Red Giant Stars?)
    Authors: Bruno Lopez, Jean Schneider, William C. Danchi
    Comments: 30 pages

    Stadiya giganta dostatochno skorotechna - ona sostavlyaet menee 10 procentov zhizni zvezdy. Tem ne menee, dlya zvezd s massoi poryadka massy Solnca sushestvovanie "poyasa zhizni" (opredelyaemogo v pervuyu ochered' vozmozhnost' sushestvovaniya zhidkoi vody) na stadii krasnogo giganta sostavlyaet sotni millionov let. T.k. est' ukazaniya, chto zhizn' na Zemle poyavilas' menee chem za milliard let, to razumno obsudit' perspektivy obnaruzheniya zhizni (konechno, v primitivnyh formah) vokrug krasnyh gigantov, chto avtory i delayut.


    astro-ph/0503521 Svyaz' mezhdu pryamym opticheskim i gamma izlucheniem gamma-vspleskov (A Link between Prompt Optical and Prompt Gamma-Ray Emission in Gamma-Ray Bursts)
    Authors: W.T. Vestrand et al.
    Comments: 9 pages, 4 figures NOTE: This paper has been accepted for publication in Nature

    Rech' idet o registracii opticheskogo izucheniya gamma-vspleska 041219a. Vsego lish' vo vtoroi raz udalos' poimat' vsplesk v optike pryamo v moment osnovnoi vspyshki v gamma-diapazone. Udalos' eto teper' s pomosh'yu ustanovki RAPTOR.

    Opticheskaya ekspoziciya nachalas' vsego lish' na 8 sekund pozdnee gamma impul'sa (signal o nachale vspleska postupil so sputnika Integral). T.k. vsplesk okazalsya dlinnym, to est' kusok, dlya kotorogo est' i gamma, i opticheskie dannye.

    V otlichie ot pervogo sluchaya sovmestnoi zapisi opticheskogo i gamma izlucheniya na etot raz potoki okazalis' dostatochno korrelirovannymi. Tak chto, nesmotrya na poluchenie novyh vazhnyh dannyh, kartina stanovitsya, vozmozhno, bolee zaputannoi.


    astro-ph/0503526 Novye issledovaniya pul'sarnoi tumannosti v ostatke sverhnovoi CTB 80 (New Studies of the Pulsar Wind Nebula in the Supernova Remnant CTB 80)
    Authors: T.A. Lozinskaya et al.
    Comments: to appear in Astronomy Letters, 12 pages, 6 postscript figures, two in colour; for a version with high resolution figures see http://www.sao.ru/hq/grb/team/vkom/CTB80_fine.pdf

    Vpervye po issledovaniyu pul'sarnoi tumannosti udalos' opredelit' skorost' pul'sara vdol' lucha zreniya. Ona okazalas' dovol'no bol'shoi - okolo 500 km/s, chto prevoshodit ego skorost' v ploskosti nebesnoi sfery.


    gr-qc/0503097 Chervotochiny i puteshestviya vo vremeni? Vryad li (Wormholes and Time Travel? Not Likely)
    Authors: Leonard Susskind
    Comments: 6 pages

    Rassmatrivayutsya nekotorye aspekty vozmozhnostei peremesheniya cherez t.n. Chervotochiny (Wormholes). Avtor pokazyvaet, chto soobshenie cherez takoi tonnel' budet narushat' dva fundamental'nyh fizicheskih principa: lokal'noe sohranenie energii i princip neopredelennosti (v primenenii k pare vremya-energiya). T.o., zaklyuchaet Sasskind, v ramkah izvestnoi fiziki sozdanie mashiny vremeni vryad li vozmozhno.


    astro-ph/0503552 Novaya karlikovaya galaktika v Bol'shoi Medvedice (A New Milky Way Dwarf Galaxy in Ursa Major)
    Authors: Beth Willman et al.
    Comments: Submitted to ApJL

    Otkryt ocherednoi karlikovyi sputnik nashei Galaktiki. Koordinaty novogo ob'ekta 158.72 (pryamoe voshozhdenie) i 51.92 (sklonenie), t.e. on nahoditsya v sozvezdii Bol'shoi Medvedicy. Odnako konechno, razglyadet' ego v lyubitel'skie teleskopy ne poluchitsya. A obnaruzhili ego po dannym Sloanovskogo cifrovogo obzora neba.

    Vozmozhno, chto otkrytaya karlikovaya sferoidal'naya galaktika postavila rekord po svoei neulovimosti: polnaya svetimost' i poverhnostnaya yarkost' nashego novogo sputnika chrezvychaino nizki. Rasstoyanie do galaktiki sostavlyaet okolo 100 kpk.


    astro-ph/0503554 Infrakrasnoe izluchenie ot vnesolnechnoi planety (Infrared radiation from an extrasolar planet)
    Authors: Drake Deming, Sara Seager, L. Jeremy Richardson, Joseph Harrington
    Comments: to appear in Nature April 7, posted to Nature online March 23 (11 pages, 3 figures)

    Zaregistrirovano IK (24 mikrona) izluchenie goryachego yupitera HD 209458b. Takzhe kak i v sluchae TrES-1 rezul'tat dostignut blagodarya zatmeniyam v sisteme.


    miniobzor astro-ph/0503560 GALEX: Galaxy Evolution Explorer (GALEX: Galaxy Evolution Explorer)
    Authors: Barry F. Madore
    Comments: invited review; to be published in "The Spectral Energy Distribution of Gas-Rich Galaxies: Confronting Models with Data", 4-8 October 2004, Heidelberg, eds. Cristina C. Popescu and Richard J. Tuffs, AIP Conf. Ser.; for a high resolution version see http://nedwww.ipac.caltech.edu/level5/March05/Madore/frames.html

    My neodnokratno pisali o rabote i rezul'tatah sputnika GALEX, issleduyushego evolyuciyu galaktik (dazhe odna iz tem vypuska byla celikom posvyashena rezul'tatam s etogo sputnika). Zdes' zhe v odnoi stat'e mozhno naiti vse vazhneishie svezhie rezul'taty.


    kniga!!! hep-th/0503203 Fizika elementarnyh chastic i inflyacionnaya kosmologiya (Particle Physics and Inflationary Cosmology)
    Authors: Andrei Linde
    Comments: 270 pages, 35 figures

    Linde nachal vykladyvat' svoi knigi v Arhiv!!!!!!! Nikakih kommentariev.

    Dobavim, pravda, chto poyavilas' i novaya obzornaya lekciya Linde Inflation and String Cosmology.


    obzor astro-ph/0503569 Mezhzvezdnye pylevye chasticy - 75-letnii yubilei (Interstellar Grains -- The 75th Anniversary)
    Authors: Aigen Li
    Comments: invited review article for the "Light, Dust and Chemical Evolution" conference (Gerace, Italy, 26--30 September 2004), edited by F. Borghese and R. Saija, 2005, in press

    Aigen Li vylozhil neskol'ko svoih obzorov, posvyashennyh mezhzvezdnoi pyli. Semidesyatipyatiletie, upomyanutoe v zagolovke svyazano so stat'ei Tryumplera 1930 g., gde vpervye dostoverno bylo pokazano nalichie mezhzvezdnoi pyli.

    Drugie obzory togo zhe avtora - eto stat'i astro-ph/0503567 i astro-ph/0503271


    stat'ya v enciklopedii astro-ph/0503600 Klassicheskaya zadacha mnogih tel v gravitacii (The Classical Gravitational N-Body Problem)
    Authors: Douglas C. Heggie
    Comments: 29 pages, 4 figures, to appear in Encyclopaedia of Mathematical Physics, Elsevier, 2006

    Obshirnaya enciklopedicheskaya stat'ya, posvyashennaya metodu mnogih tel v gravitacii.

    Vse znayut, chto uzhe zadacha treh tel v obshem vide ne imeet polnogo analiticheskogo resheniya. Odnako v astronomii splosh' i ryadom vstrechayutsya situacii vzaimodeistviya mnozhestva ob'ektov. Dlya resheniya takih zadach byli razrabotany kak chislennye, tak i priblizhennye analiticheskie metody. Obo vsem etom - v stat'e.


    astro-ph/0503620 Sobstvennye dvizheniya karlikovyh sferoidal'nyh galaktik po dannym kosmicheskogo teleskopa im. Habbla. III: Izmereniya galaktiki v Maloi Medvedice (Proper Motions of Dwarf Spheroidal Galaxies from Hubble Space Telescope Imaging. III: Measurement for Ursa Minor)
    Authors: S. Piatek et al.
    Comments: AJ, accepted; 23 pages, 17 figures (Fig. 1 abridged), 5 tables

    Ne znayu kak vam, a mne (S.P.) porazitel'no, chto mozhno izmeryat' sobstvennye dvizheniya galaktik (pust' i blizkih) po opticheskim nablyudeniyam.


    miniobzor astro-ph/0503624 Korotkaya i sub'ektivnaya istoriya kosmicheskogo teleskopa im. Spitcera (A Short and Personal History of the Spitzer Space Telescope)
    Authors: Michael Werner
    Comments: 12 pages, 3 figures; to appear in proceedings of "The Spitzer Space Telescope: New Views of the Cosmos"

    Istoriya kazhdogo bol'shogo kosmicheskogo proekta nachinaetsya zadolgo doego zapuska. V sluchae SIRTF - Kosmicheskogo teleskopa im. Spitcera - ot zamysla do realizacii proshlo bolee 30 let. Odin iz neposredstvennyh uchastnikov vseh etih sobytii predstavlyaet svoi vzglyad na istoriyu sozdaniya kosmicheskoi observatorii.


    astro-ph/0503625 Klimaticheskie i biohimicheskie effekty galakticheskih gamma-vspleskov (Climatic and Biogeochemical Effects of a Galactic Gamma-Ray Burst)
    Authors: Adrian L. Melott et al.
    Comments: 13 pages

    Po sovremennym ocenkam gamma-vspleski proishodyat v Galaktike raz v desyatki tysyach let. Iz-za napravlennosti izlucheniya na Zemle galakticheskie vspleski byli by vidny primerno raz v neskol'ko millionov let. Nebol'shaya dolya iz nih mogla by byt' dostochno blizkimi, chtoby ser'ezno vozdeistvovat' na zemnuyu biosferu. Tem takih sobytii ocenivaetsya primerno raz v milliard let.

    Avtory rassmatrivayut posledstviya blizkogo gamma-vspleska, i privodyat argumenty v pol'zu togo, chto odna iz katastrof v zemnoi istorii mogla byt' svyazana s podobnym sobytiem.


    astro-ph/0503632 Otkrytie bol'shoi (200 kpk) gazovoi tumannosti na Z=2.7 (Discovery of a Large ~200 kpc Gaseous Nebula at z=2.7 with the Spitzer Space Telescope)
    Authors: A. Dey et al.
    Comments: 37 pages (includes 11 figures). Accepted to ApJ

    Vsem izvestny gazovye tumannosti, svyazannye s oblastyami obrazovaniya zvezd. A vot, pohozhe, otkryt analog, no uzhe na galakticheskih masshtabah.

    Nazemnye nablyudeniya i nablyudeniya na Spitcerovskom kosmicheskom teleskope obnaruzhili gigantskuyu (200 kpk) tumannost', vnutri kotoroi obnaruzheno aktivnoe galakticheskoe yadro i molodaya galaktika s moshnym zvezdoobrazovaniem. Est' osnovaniya polagat', chto vnutri tumannosti est' i drugie podobnye ob'ekty. T.o. avtory vyskazyvayut gipotezu, chto tumannost' svyazana s oblast'yu mnozhestvennogo formirovaniya galaktik i aktivnyh yader.

    Fotografiya sootvetstvuet I-diapazonu. Na izobrazhenii krasnym krestom otmecheno polozhenie IK-istochnika, nablyudaemogo na dline volny 8 mikron. Kontury sootvetstvuyut Laiman-al'fa izlucheniyu. A i B - dve galaktiki.


    astro-ph/0503673 O periode vrasheniya Sedny (On the Rotation Period of (90377) Sedna)
    Authors: B. Scott Gaudi et al.
    Comments: 7 pages, 3 figures, 2.5 tables, submitted to ApJL.

    Poluchena ocenka perioda vrasheniya Sedny. Ocenka ochen' priblizitel'naya. Sostavlyaet ona okolo 10 chasov, chto nahoditsya v sootvetstvii s ozhidaemym.


    miniobzor hep-ph/0503257 Kosmologicheskie predely na massu neitrino dlya ne-kosmologov (Cosmological neutrino bounds for non-cosmologists)
    Authors: Max Tegmark
    Comments: 4 pages, 2 figs, in "Neutrino Physics", Proceedings of Nobel Symposium 129, eds., L Bergstrom, O. Botner, P. Carlson, P. O. Hulth, and T. Ohlsson

    Kratko obsuzhdayutsya sovremennye predely na massu neitrino, poluchennye po dannym kosmologicheskih issledovanii. Rezul'tat sostavyalet 0.42 eV. Eto ustupaet dannym po atmosfernym neitrino. Odnako avtor obsuzhdaet, kak v blizhaishee vremya iz kosmologii mozhno poluchit' bolee tochnye dannye.



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

    physics/0503181 Nauchnaya eshatologiya (Scientific Eschatology)
    Authors: H.Pierre Noyes, James Lindesay
    Comments: 22 pages

    Prakticheski "filosofskoe" esse o budushem vselennoi i cheloveka s tochki zreniya sovremennoi nauki.


    obzor physics/0503235 Verner Geizenberg (1901-1976) (Werner Heisenberg (1901-1976))
    Authors: Ivan Todorov
    Comments: Lecture at a Conference, dedicated to the 50th anniversary of the re-establishment of the Alexander von Humboldt Foundation, Sofia, Bulgaria, October 2003.

    Nebol'shaya stat'ya, posvyashennaya Geizenbergu. Avtor rasskazyvaet ne tol'ko o ego nauchnyh rabotah, no i o slozhnyh perepetiyah ego zhizni.


    obzor physics/0503245 Neitronnye zvezdy (Neutron Stars)
    Authors: Gordon Baym, Frederick K. Lamb
    Comments: Encyclopedia of Physics 3rd ed., R.G. Lerner and G.L. Trigg, eds., Wiley-VCH, Berlin

    Enciklopedicheskaya stat'ya o neitronnyh zvezdah. Rekomenduetsya vsem k obyazatel'nomu prochteniyu.


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