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  • 29.08.2008. "Kotik, cheshirchik ...."

  • 28.08.2008. Ne temnaya li eto materiya nasledila?

  • 19.08.2008. Ochen' legkii millisekundnyi pul'sar

  • 08.08.2008. Portret beta Liry

  • 22.01.2008. Chernaya dyra v Omega Centavra

  • 11.01.2008. Dvoinoe einshteinovskoe kol'co

  • 06.08.2007. Kto eto tam tak bumknul?
  • 14.03.2007. Taina kolec sverhnovoi
  • 06.03.2007. BL Lac v zhestkom gamma

    Soderzhanie i bystryi perehod k razdelam obzora


    Stat'i nedeli
    "Luchshie iz luchshih"

  • arxiv/0808.2292
    Mul'titeleskopnyi taiming PSR J1518+4904
  • arxiv/0808.2754
    Dalekie miry: strategiya po poisku i opisaniyu ekzoplanet
  • arxiv/0808.2868
    Izmerenie potoka solnechnyh 8B neitrino po dannym 246 dnei nablyudenii na Boreksino i obnaruzhenie MSV perehoda vakuum-veshestvo
  • arxiv/0808.2870
    Izmerenie rasstoyaniya do central'noi sverhmassivnoi chernoi dyry v nashei Galaktike i ee svoistv po dannym o zvezdnyh orbitah
  • arxiv/0808.3725
    Novye pozitronnye spektral'nye detali iz-za supersimmetrichnogo temnogo veshestva - put' dlya ob'yasneniya dannyh PAMELA?
  • arxiv/0808.3772
    Blizkie massy u galaktik-sputnikov Mlechnogo Puti

    Otdel'nye stat'i
  • Vspyhivayushii radiotranzient v napravlenii galakticheskogo centra
  • Rentgenovskie pul'sary glazami INTEGRAL
  • Izmerenie magnitnyh polei O-zvezd s pomosh'yu FORS1 na VLT
  • Ogranicheniya na modeli gravitacii i kosmologicheskie parametry po astrofizicheskim dannym
  • Mul'titeleskopnyi taiming PSR J1518+4904
  • Obzor giperskorostnyh zvezd na MMT
  • Est' li sverhmassivnaya chernaya dyra v centre nashei Galaktiki?
  • Dalekie miry: strategiya po poisku i opisaniyu ekzoplanet
  • Sostoyanie astronomii ochen' vyskoih energii na nachalo 2008 goda
  • Izmerenie potoka solnechnyh 8B neitrino po dannym 246 dnei nablyudenii na Boreksino i obnaruzhenie MSV perehoda vakuum-veshestvo
  • Izmerenie rasstoyaniya do central'noi sverhmassivnoi chernoi dyry v nashei Galaktike i ee svoistv po dannym o zvezdnyh orbitah
  • Astroseismologiya i solnechno-zvezdnye svyazi
  • Novye pozitronnye spektral'nye detali iz-za supersimmetrichnogo temnogo veshestva - put' dlya ob'yasneniya dannyh PAMELA?
  • Goryachie novosti - nebo v ochen' zhestkih gamma-luchah
  • Blizkie massy u galaktik-sputnikov Mlechnogo Puti


    Iz razdela physics
  • Pochemu stalo slozhnee predskazyvat' nobelevskih laureatov: bibliometricheskii analiz nominantov i laureatov po fizike i himii (1901-2007)
  • BEPCIII i BESIII
  • Fizicheskoe obrazovanie: istochniki dlya prepodavatelei


    Polnyi Arhiv predydushih vypuskov.

    Arhiv statei, voshedshih v vypuski s 01 iyulya 2002 g. po 31 marta 2003 g.

    Arhiv na 14.04.2006 odnim failom
    (36.9 Mb; *.tar.gz)
    gzip homepage

    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.


    Avtor proekta
    Sergei Popov

    Ranee uchastvovali:
    Mihail Prohorov
    Ekaterina Kasimova


    Diskussii po stat'yam Arhiva

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  • Obzory preprintov astro-ph

    Vypusk N193
    astro-ph za 15 - 31 avgusta 2008 goda: izbrannye stat'i

    Referaty otdel'nyh statei



    arxiv:0808.1899 Vspyhivayushii radiotranzient v napravlenii galakticheskogo centra (A bursting radio transient in the direction of the galactic center)
    Authors: Paul S. Ray et al.
    Comments: 11 pages, 2 figures, to appear in proceedings of "Bursts, pulses and flickering: wide-field monitoring of the dynamic radio sky"

    GCRT J1745-3009 - interesnyi i neponyatnyi radiotranzient, otkrytyi neskol'ko let nazad. Obsuzhdalos' neskol'ko raznyh modelei istochnika, i mozhno pridumat' novye (naprimer, odinochnye neitronnye zvezdy na ekzoticheskih stadiyah, superezhektor v dvoinoi sisteme i tp.). Avtory opisyvayut dannye po etomu istochniku, obsuzhdayut nekotorye modeli i rassuzhdayut, chto mozhno nadeyat'sya uznat' v budushem.


    arxiv:0808.2034 Rentgenovskie pul'sary glazami INTEGRAL (X-ray pulsars through the eyes of INTEGRAL)
    Authors: A. Lutovinov, S. Tsygankov
    Comments: 12 pages, 8 figures

    Daetsya obzor rezul'tatov po nablyudeniyam rentgenovskih pul'sarov na sputnike INTEGRAL. Naibolee interesno opisanie zavisimosti energii ciklotronnoi linii ot svetimosti (eto izmereno dlya treh istochnikov). Takzhe rassmatrivaetsya evolyuciya periodov i zavisimost' doli pul'siruyushego ot razlichnyh parametrov.


    arxiv:0808.2039 Izmerenie magnitnyh polei O-zvezd s pomosh'yu FORS1 na VLT (Magnetic field measurements of O stars with FORS1 at the VLT)
    Authors: S. Hubrig et al.
    Comments: 8 pages, 4 figures, 3 tables, accepted to A&A

    Avtory privodyat novye dannye po izmereniyam magnitnyh polei u massivnyh zvezd. Osnovnoi vyvod avtorov v tom, chto po vsei vidimosti uporyadochennye krupnomasshtabnye polya ne slishkom chasto vstrechayutsya u O-zvezd.


    dissertaciya arxiv:0808.2063 Ogranicheniya na modeli gravitacii i kosmologicheskie parametry po astrofizicheskim dannym (Constraining gravitational and cosmological parameters with astrophysical data)
    Authors: Yi MAO
    Comments: PhD Thesis (MIT), 199 pages, 22 figures, 22 tables

    Dissertaciya posvyashena interesneishei tematike i, kak obychno, soderzhit neplohoi obzor. Krome vsyakih prochih veshei avtor rasschityvaet, kak nablyudeniya na SKA smogut pomoch' tochnee opredelyat' kosmologicheskie parametry. Na ego vzglyad, vse vyglyadit ves'ma optimistichno, esli budet vybran dizain, maksimiziruyushei vozmozhnosti SKA po nablyudeniyu neitral'nogo vodoroda na 21 sm.


    arxiv:0808.2292 Mul'titeleskopnyi taiming PSR J1518+4904 (Multi-telescope timing of PSR J1518+4904)
    Authors: G.H.Janssen et al.
    Comments: 11 pages, 8 figures, accepted by A&A

    PSR J1518+4904 - eto odna iz devyati sistem, sostoyashih iz dvuh neitronnyh zvezd (hotya by odna iz kotoryh yavlyaetsya radiopul'sarom). Avtory detal'no issleduyut istochnik i poluchayut ochen' interesnyi rezul'tat.

    Vo-pervyh, udalos' tochno izmerit' polnuyu massu sistemy - 2.72 massy Solnca. Tut poka nichego udivitel'nogo. Interesno, chto odna iz neitronnyh zvezd (ta, kotoraya yavlyaetsya pul'sarom) imeet nizkuyu massu: 0.72+0.51/-0.58 mass Solnca. Predely sootvetstvuyut veroyatnosti 95.4 procenta. V principe, verhnii predel v 1.17 solnechnyh mass ne kazhetsya takim uzh udivitel'nym, no vspomnite, chto my govorim o millisekundnom pul'sare, kotoryi byl raskruchen za schet akkrecii so vtorogo kompan'ona! T.e., vo-pervyh, nachal'naya massa byla eshe men'she, a vo-vtoryh, kompan'on, kotoryi dolzhen byl obrazovat'sya iz iznachal'no menee massivnoi zvezdy, zametno tyazhelee pul'sara (massa kompan'ona 1.55-2.58 solnechnyh mass s toi zhe dostovernost'yu 95.4 procenta).

    Obsudit' v ZhZh-soobshestve ru_astroph.
    Obsudit' na Astroforume v Nauchnoi panorame.


    arxiv:0808.2469 Obzor giperskorostnyh zvezd na MMT (MMT Hypervelocity Star Survey)
    Authors: Warren R. Brown, Margaret J. Geller, Scott J. Kenyon
    Comments: 10 pages, submitted to ApJ

    Esli vy eshe ne slyshali o giperskorostnyh zvezdah, to eto vash shans, ibo v stat'e ne tol'ko privodyatsya novye rezul'taty, no i daetsya horoshee opisanie etoi oblasti astronomii.

    Giperskorostnye zvezdy nachali otkryvat' ne tak davno - okolo 3-4 let nazad. Oni imeyut skorosti poryadka neskol'kih soten km v sek - vyshe skorosti ubeganiya iz Galaktiki (prenebrezhem rol'yu galo). T.e., zvezdy nado bylo kak-to razognat'. Eto ne malomassivnye malometallichnye zvezdy galo. Naibolee veroyatnym schitaetsya, chto zvezdy byli vybrosheny iz central'noi oblasti Galaktiki posle vzaimodeistviya s central'noi sverhmassivnoi chernoi dyroi.

    V stat'e avtory privodyat dannye po svezheotkrytym zvezdam etogo tipa. Novye rezul'taty prakticheski udvaivayut ih chislo. Sootvetstvenno, mozhno s bol'shim osnovaniem navodit' vsyakuyu statistiku i obsuzhdat' proishozhdenie i tp.


    obzor arxiv:0808.2624 Est' li sverhmassivnaya chernaya dyra v centre nashei Galaktiki? (Is there a Supermassive Black Hole at the Center of the Milky Way?)
    Authors: Mark J. Reid
    Comments: Invited review submitted to International Journal of Modern Physics D; 23 pages; 10 figures

    Horoshii obzor po issledovaniyam sverhmassivnoi chernoi dyry v centre nashei Galaktiki. Opisana istoriya voprosa i akkuratno rassmotreno, pochemu my tak uvereny, chto dyra tam est'.


    obzor arxiv:0808.2754 Dalekie miry: strategiya po poisku i opisaniyu ekzoplanet (Worlds Beyond: A Strategy for the Detection and Characterization of Exoplanets)
    Authors: J. I. Lunine et al.
    Comments: 195 pages, eport of the Exoplanet Task Force to the Astronomy and Astrophysics Advisory Committee

    Megaobzor!

    Osnovnaya cel' - dat' rekomendacii po razvitiyu programm v oblasti issledovaniya ekzoplanet. My uzhe znaem ochen' mnogo ob ekzoplanetah (kstati, stranno, chto nikak ne dadut nobelevskuyu premiyu za otkrytie pervyh), seichas izvestno bolee 200 sistem (na russkom smotri takzhe prekrasnyi proekt Viki Vorob'evoi). Polucheny pryamye izobrazheniya ekzoplanet (pust' i dlya specificheskih sistem). Poyavlyayutsya kandidaty v sistemy tipa nashei (horoshii korotkii obzor mozhno posmotret' tut). No eto tol'ko nachalo: est' vozmozhnost' dlya rezkogo progressa, esli nachat' razrabatyvat' novye tehnologii.

    Obzor ochen' polnyi, no pri etom dostupnyi (napisan ne tol'ko ine stol'ko dlya uzkih professionalov, a dlya shirokogo kruga lyudei, prinimayushih resheniya).

    Otdel'no dam ssylku na odnu diskussiyu v ZhZh, svyazannuyu s issledovaniyami v oblasti SETI. Na moi vzglyad, uspeh pridet blagodarya razvitiyu chisto astronomicheskih programm v oblasti obzorov neba v raznyh diapazonah i v issledovanii ekzoplanet. Ne vse razdelyayut etu tochku zreniya (sm., naprimer, nashu diskussiyu s A. Zaicevym). Pochitat' po etoi tematike stoit izvestnuyu knigu Shklovskogo (esli eshe ne chitali), knigu Gindilisa i stat'yu Lipunova.
    Ssylku na diskussiyu ya dayu kak raz potomu, chto iz obzora yasno, kak mnogo my mozhem uznat' ob ekzoplanetah v blizhaishie 15 let. Esli vy dobavite predstavlenie o tom, kak razvivayutsya obzory neba v raznyh diapazonah (odni plany po poisku radiotranzientov chego stoyat! Tut otmechu proekt LOFAR, nu i konechno zhe plany po sozdaniyu SKA), to stanet yasno, chto cherez 15 let mozhno budet vesti kuda kak bolee plodotvornuyu diskussiyu o zhizni vo vselennoi. Osnovnye nereshennye voprosy budut svyazany uzhe s proishozhdeniem zhizni i poyavleniem razuma i ego evolyucii, a ne s astronomiei.

    Eshe skazhu: zhal', chto u nas net legko dostupnyh obzorov takogo tipa.

    Obsudit' v ZhZh-soobshestve ru_astroph.
    Obsudit' na Astroforume v Nauchnoi panorame.

    O tranzitnyh planetah sm. obzor arxiv:0808.3007


    miniobzor arxiv:0808.2841 Sostoyanie astronomii ochen' vyskoih energii na nachalo 2008 goda (Status of Very High Energy gamma-ray Astronomy as of early 2008)
    Authors: Arache Djannati-Atai
    Comments: 8, pages, 1 figure, Proceedings of the 3rd Workshop for a Very large volume neutrino telescope for the Mediterranean Sea (VLVnT08) Toulon, April 22-24 2008, (to be published in Nucelar Instruments and Methods A)

    Horoshii obzor po nazemnoi gamma-astronomii. Osobenno polezen tablicami s zaregistrirovannymi istochnikami (kak horosho izvestnymi v drugih diapazonah, tak i neotozhdestvlennymi).


    arxiv:0808.2868 Izmerenie potoka solnechnyh 8B neitrino po dannym 246 dnei nablyudenii na Boreksino i obnaruzhenie MSV perehoda vakuum-veshestvo (Measurement of the solar 8B neutrino flux with 246 live days of Borexino and observation of the MSW vacuum-matter transition)
    Authors: The Borexino Collaboration
    Comments: Comments: 6 pages, 4 figures

    Avtory opisyvayut nablyudeniya solnechnyh neitrino na ustanovke Boreksino v Gran Sasso. Vazhno to, chto avtory vpervye govoryat ob obnaruzhenii interesnogo effekta, svyazannogo s oscillyaciyami neitrino. Teoriya govorit nam, chto poka neitrino letyat iz centra Solnca k nam, rabotayut dva osnovnyh effekta. V yadre Solnca oscillyacii usileny prisutsviem veshestva pri vysokoi plotnosti, eto vazhno dlya energii neitrino vyshe 5 MeV. A dlya nizkih energii (menee 2 MeV) vazhnee vakuumnye oscillyacii. Mezhdu dvumya etimi rezhimami dolzhen byt' plavnyi perehod vot etot perehod i obnaruzhen, prichem vazhno, chto sdelano eto na odnom detektore.


    arxiv:0808.2870 Izmerenie rasstoyaniya do central'noi sverhmassivnoi chernoi dyry v nashei Galaktike i ee svoistv po dannym o zvezdnyh orbitah (Measuring Distance and Properties of the Milky Way's Central Supermassive Black Hole with Stellar Orbits)
    Authors: A. M. Ghez, et al.
    Comments: ApJ, accepted (26 pages, 16 figures, 7 tables)

    Prodolzhayutsya nablyudeniya zvezd, obrashayushihsya vokrug central'noi sverhmassivnoi chernoi dyry v centre nashei Galaktiki. Sootvetstvenno, vozrastaet tochnot' opredeleniya massy dyry, rasstoyaniya do nee i t.d. Rasstoyanie ravno 8.4+/-0.4 kpk, a massa 4.5+/-0.4 millionov mass Solnca.


    miniobzor arxiv:0808.3136 Astroseismologiya i solnechno-zvezdnye svyazi (Astroseismology and the Solar-Stellar Connection)
    Authors: Travis S. Metcalfe
    Comments: 10 pages, 7 figures, Proc. SOHO XXI/GONG 2008

    V sleduyushem godu budet zapushen sputnik KEPLER. Eto budet pervaya specializirovannaya missiya, sposobnaya otkryvat' planety tipa Zemli okolo zvezd tipa Solnca. Avtor daet obzor proekta, a takzhe obsuzhdaet, kak s pomosh'yu metodov astroseismologii budut opredelyat'sya parametry zvezd.


    arxiv:0808.3725 Novye pozitronnye spektral'nye detali iz-za supersimmetrichnogo temnogo veshestva - put' dlya ob'yasneniya dannyh PAMELA? (New Positron Spectral Features from Supersymmetric Dark Matter - a Way to Explain the PAMELA Data?)
    Authors: Lars Bergstrom, Torsten Bringmann, Joakim Edsjo
    Comments: 6 pages revtex4; 4 figures

    Na nedavnei konferencii v Shvecii kollaboraciya PAMELA zayavila ob obnaruzhenii neozhidanno vysokogo otnosheniya chisla pozitronov k elektronam na vysokih energiyah. (Napomnyu, chto PAMELA - eto ital'yanskii sputnik s rossiiskim uchastiem, prednaznachennyi dlya izucheniya chastic kosmicheskih luchei). V dannoi stat'e avtory pytayutsya ob'yasnit' etot rezul'tat tem, chto izbytok pozitronov svyazan s annigilyaciei chastic temnoi materii. Konechno, bylo by horosho imet' nezavisimoe podtverzhdenie dannyh PAMELA, no dlya etogo, vidimo, nuzhno budet dozhidat'sya zapuska AMS, hotya avtory takzhe nadeyatsya na PEBS.

    Razumeetsya, dlya ob'yasneniya dannyh PAMELA mozhno ispol'zovat' i drugie idei. Naprimer, blizkii istochnik tipa molodogo ostatka sverhnovoi. Tak chto yasnosti poka net.

    Takzhe o vozmozhnyh parametrah chastic temnogo veshestva sm. arxiv:0808.3607, gde avtory pytayutsya naiti interpretaciyu rezul'tatam DAMA/LIBRA, sravnivaya rezul'taty etogo eksperimenta s prochimi.

    Sm. takzhe arxiv:0808.3867, gde drugaya gruppa avtorov obsuzhdaet pohozhii scenarii. Takzhe ob astrofizicheskih perspektivah obnaruzheniya temnoi materii sm. poluobzornuyu stat'yu arxiv:0808.3384.

    Obsudit' v ZhZh-soobshestve ru_astroph.
    Obsudit' na Astroforume v Nauchnoi panorame.


    obzor arxiv:0808.3744 Goryachie novosti - nebo v ochen' zhestkih gamma-luchah (High-(Energy)-Lights -- The Very High Energy Gamma-Ray Sky)
    Authors: D. Horns
    Comments: 33 pages to appear in Reviews of Modern Astronomy

    Ochen' horoshii obzor po gamma-astronomii. Upor sdelan na istochniki (a ne na ustanovki i tp., hotya po metodam nablyudenii dana horoshaya korotkaya svodka). Izvestnye ob'ekty otdel'no (po klassam) obsuzhdeny. Vse tolkovo i ponyatno.


    arxiv:0808.3772 Blizkie massy u galaktik-sputnikov Mlechnogo Puti (A common mass scale for satellite galaxies of the Milky Way)
    Authors: Louis E. Strigari et al.
    Comments: 19 pages, 3 figures. Includes supplementary information. Nature 454:1096-1097, 2008

    Seichas u nashei Galaktiki izvestno 23 karlikovyh sputnika. Modeli formirovaniya struktury i galaktik predskazyvayut, chto u galaktiki tipa nashei dolzhno byt' gorazdo bol'she galo-sputnikov (tysyachi!). Eti galo temnoi materii (plyus skol'ko-to obychnoi) s massami do milliona solnechnyh i dazhe men'she. Pochemu zhe my ih ne vidim?

    Avtory opredelili massy dlya 18 sputnikov. Okazalos', chto nesmotrya na razlichie v svetimosti v neskol'ko poryadkov, massy u karlikovyh sputnikov ves'ma shozhi i sostavlyayut okolo 10 millionov solnechnyh (vnutri central'nyh 300 parsek). Razumeetsya, osnovnaya dolya massy svyazana s temnym veshestvom. Sootvetstvenno, vo-pervyh, samye slabye sputniki - eto naibolee dominirovannye temnoi materiei galaktiki. A vo-vtoryh, bolee legkie ob'ekty - uzhe kak by i ne galaktiki.

    Otmechu, chto konechno ne nado vosprinimat' chislo 10 millionov solnechnyh mass kak kakoi-to absolyutno zhestkii predel. V vyborke est', naprimer, galaktika Leo IV s massoi 3.9+5/-3 milliona solnechnyh. Tak chto eto imenno harakternyi masshtab minimal'noi massy galaktiki.




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


    arxiv:0808.2517 Pochemu stalo slozhnee predskazyvat' nobelevskih laureatov: bibliometricheskii analiz nominantov i laureatov po fizike i himii (1901-2007) (Why it has become more difficult to predict Nobel Prize winners: a bibliometric analysis of Nominees and Winners of the Chemistry and Physics Prizes (1901-2007))
    Authors: Yves Gingras, Matthew L. Wallace
    Comments: 13 pages

    Avtory provodyat bibliometricheskii analiz vseh laureatov nobelevskih premii po fizike i himii, a takzhe nominantov za period s 1901 po 1945 gg. (eti dannye otkryty). Odin iz vyvodov sostoit v tom, chto seichas iz-za eksponencial'nogo rosta nauki stalo ochen' trudno predskazat' laureatov. "Mnogo zvannyh, no malo izbrannyh".


    arxiv:0808.3163 BEPCIII i BESIII (BEPCII and BESIII)
    Authors: Frederick A. Harris (for the BES Collaboration)
    Comments: 7 pages, 8 figures, Invited talk at the 10th International workshop on Meson Production, Properties and Interaction, Cracow, Poland, 6-10 June 2008

    BEPC - Beijing Electron-Positron Collider. BES - Beijing Spectrometer, eto detektor na ustanovke. BEPC i BES davno i uspeshno rabotali, a v 2003 godu bylo prinyato reshenie ob apgreide ustanovki i detektorov. BEPCII i BESIII - eto novye versii, imenno oni i opisyvayutsya v stat'e. Seichas idet naladka i testy. V konce goda nachnetsya real'naya rabota. Energiya stolknoveniya elektronov i pozitronov (v sisteme centra mass) budet ot 2 do 4.6 GeV.


    arxiv:0808.3636 Fizicheskoe obrazovanie: istochniki dlya prepodavatelei (Physics education research: Resources for graduate student instructors)
    Authors: Zosia A. C. Krusberg
    Comments: 9 pages

    Interesnyi (i, vidimo, poleznyi) spisok ssylok na knigi i razlichnye resursy, poleznye dlya prepodavatelei fiziki (po nashim merkam, navernoe, ne tol'ko dlya VUZovskih prepodavatelei, no i dlya shkol'nyh uchitelei starshih klassov v prodvinutyh shkolah).



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