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Novosti nauki
The R.A.P. Project
26.09.02. astro-ph za 23 - 26 sentyabrya 2002 goda: izbrannye stat'i


obzor astro-ph/0209416 Planet migration
Authors: Edward W. Thommes, Jack J. Lissauer
Comments: 14 pages, 1 figure. To appear in proceedings of STSci Astrophysics of Life symposium (May 6-9, 2002)

Est' dovol'no ustoyavsheesya mnenie, chto planety mogut sushestvenno izmenyat' svoi orbity na ranniyah stadiyah sushestvovaniya sistemy vsledstvie kakih-libo vneshnih vozdeistvii ili vzaimodeistviya drug s drugom. Avtory dayut obzor osnovnyh mehanizmov migracii planet i obsuzhdayut primenimost' etih mehanizmov kak ko mnozhestvu izvestnyh ekzoplanetnyh sistem, tak i k nashei Solnechnoi sisteme.


astro-ph/0209420 Parallization of Stellar Atmosphere Codes
Authors: P. Hoeflich
Comments: 14 pages+5 figures, in: Stellar Atmospheric Modeling, ASP Conference Series, eds. J. Hubeny, D. Mihalas & K. Werner

Parallel'nye vychisleniya shagayut po planete! Odnako, obychno problema takova: da, parallel'nyi kod poschitaet bystree, no vremya, neobhodimoe na izuchenie metodov parallel'nogo scheta prevoshodit raznicu vo vremeni vychislenii na obychnom i na parallel'nom komp'yutere. V svoei stat'e avtor pytaetsya uprostit' etu zadachu dlya astrofizikov-pol'zovatelei i dat' nabor otnositel'no neslozhnyh receptov dlya rasparallelivaniya vychislenii zvezdnyh atmosfer.


astro-ph/0209421 Observational Limits on a Cold Distant Kuiper Belt
Authors: R. Lynne Allen et al.
Comments: AJ, in press

Prakticheski vse iz bolee chem shesti soten ob'ektov poyasa Koipera nahodyatsya blizhe 50 a.e. Est' raznye mneniya, pochemu ne otkryvayutsya bolee dalekie ob'ekty. Krome ochevidnogo - ih prosto net - est' idei o tom, chto dinamicheskie svoistva ob'ektov dayut selekcionnyi effekt. Avtory provodyat poisk dalekih istochnikov. Rezul'tat otricatel'nyi, i avtory dayut vazhnye verhnie predely na parametry dalekih ob'ektov poyasa Koipera.


astro-ph/0209422 Energy determination in the Akeno Giant Air Shower Array experiment
Authors: M. Takeda et al.
Comments: submitted to Astroparticle Physics, 28pages, 16 figures, elsart.cls

AGASA opravdyvaetsya. Gruppa pereschitala energii chastic, i po-prezhnemu nastaivaet na svoih rezul'tatah. T.e. govoryat, chto vse u nih pravil'no, i oni ne vidyat GZK-zavala. Budem zhdat' rezul'tatov Ozhe ...


astro-ph/0209433 omega-Cen - an Ultra Compact Dwarf Galaxy ?
Authors: M. Fellhauer, P.Kroupa
Comments: 4 pages, no figures

Omega Centavra - strannoe skoplenie. Avtory vyskazyvayut ideyu, chto eto sverhkompaktnaya karlikovaya galaktika. Podobnye ob'ekty obrazuyutsya pri sliyaniyah galaktik. Mozhno vosproizvesti Omega Centavra v rezul'tate chislennyh eksperimentov. Osnovnoi upor v stat'e sdelan kak raz na parametrah chislennyh modelei, privodyashih poyavleniyu ob'ektov tipa Omega Centavra.


astro-ph/0209435 The Galactic Exoplanet Survey Telescope (GEST)
Authors: D.P. Bennett et al.
Comments: 7 pages with 13 figures, to be published in Proc. SPIE vol 4854, "Future EUV-UV and Visible Space Astrophysics Missions and Instrumentation"

Opisyvaetsya budushii proekt GEST.

Eto sputnik, prednaznachennyi dlya obnaruzheniya planet tipa Zemli (imeyutsya vvidu malye massy). Dlya etogo ispol'zuetsya effekt grav. linzirovaniya (o linzirovanii sm., naprimer, obzor Sazhina i Zaharova v UFN).


obzor astro-ph/0209438 Formation and evolution of bars in disc galaxies
Authors: E. Athanassoula
Comments: 12 pages, 8 figures, includes gh2001-asp.sty, invited review paper for the 4th Guillermo Haro conference on "Disks of Galaxies: Kinematics, Dynamics and Perturbations" at Puebla, Mexico, ASP Conf. Series 275, eds. E. Athanassoula, A. Bosma & R. Mujica

Vse my lyubim smotret' na krasivye izobrazheniya galaktik. Naprimer, na galaktiki s peremychkami. A kak obrazuetsya i zhivet takaya krasota? V svoem obzore avtor rassmatrivaet "rozhdenie, zhizn' i smert'" peremychek (barov) v galaktikah.


astro-ph/0209452 Proto-Quasars:Physical States and Observable Properties
Authors: Nozomu Kawakatu, Masayuki Umemura, Masao Mori
Comments: 7pages,7figures,accepted for publication in ApJ

Avtory stroyat model' evolyucii kvazara i ego galaktiki. Proslezhivaetsya kak izmenyaetsya otnositel'nye vklad chernoi dyry (kvazara) i galaktiki v obshuyu svetimost'. Stadyaei protokvazara avtory nazyvayut period intensivnogo rosta massy chernoi dyry. Dlitsya etot process neskol'ko soten millionov let. Po mneniyu avtorov radiogalaktiki yavlyayutsya vozmozhnymi kandidatami v takie protokvazary. Takzhe obsuzhdaetsya mesto drugih nablyudaemyh ob'ektov v dannoi kartine evolyucii sverhmassivnyh dyr i galaktik.


obzor astro-ph/0209468 Ground Based VLBI Facilities -- the European and Global VLBI Network
Authors: M.A. Garrett
Comments: 11 pages, 5 figures, lecture presented at the NATA ASI VLBI School, Oct 2001. To be published in "The Role of VLBI in Astrophysics, Astrometry and Geodesy", ed. F. Mantovani. See www.evlbi.org for more information

Sushestvuet neskol'ko krupnyh sistem interferometrov so sverhdlinnoi bazoi (VLBI): VN, VLBA, CMVA i APT/LBA. V stat'e podrobno obsuzhdayutsya evropeiskie sistemy (kotorye mogut rbotat' kak smostoyatel'no, tak i v sostave global'nyh sistem).


astro-ph/0209478 Detection of Polarization in the Cosmic Microwave Background using DASI
Authors: J. Kovac et al.
Comments: 20 pages, 6 figures

Opisyvaetsya otkrytie polyarizacii reliktovogo izlucheniya na ustanovke DASI. Otkrytie vazhnoe. O nem uzhe mnogo napisano (sm., naprimer, zametku Mihaila Prohorova na Astronete). Rezul'tat bezuslovno nuzhdaetsya v podtverzhdenii. Polagayu, chto do nachala raboty sputnika Plank neskol'ko grupp eshe zayavyat ob obnaruzhenii polyarizacii mikrovolnovogo fona.


astro-ph/0209482 Relativistic Jets from Collapsars: Gamma-Ray Bursts
Authors: Weiqun Zhang, S. E. Woosley
Comments: 8 pages, 3 figures, proceedings of 3D Stellar Evolution Workshop, Livermore, July, 2002

Odnoi iz populyarnyh modelei gamma-vspleskov v nashe vremya yavlyaetsya konstrukciya s relyativistskimi dzhetami, b'yushimi iz massivnyh gelievyh zvezd, kollapsiruyushih v chernye dyry. V svoei stat'e avtory modeliruyut rasprostranenie dzhetov v tele zvezdy, a zatem v zvezdnom vetre (napomnyu, chto massivnye zvezdy intensivno teryayut veshestvo v techenie svoei zhizni, i ih okrestnotsi zapolneny veshestvom zvezdnogo vetra).


obzor astro-ph/0209488 Time evolution of the fine structure constant
Authors: M. T. Murphy et al.
Comments: Invited review at the XXII Physics in Collision Conference (PIC02), Stanford, CA, USA, June 2002, 11 pages, LaTeX, 7 eps figures. PSN FRA T02

Daetsya obzor sovremennyh dannyh po izmereniyu variacii fundametal'nyh konstant po nablyudeniyam linii v spektrah kvazarov. Avtory polagayut, chto est' sil'nye ukazaniya (5 sigma) na nalichie variacii, no rezul'tat nuzhdaetsya, po ih mneniyu, v podtverzhenii. V svyazi s etim obsuzhdayutsya budushie nablyudeniya.


obzor astro-ph/0209504 The picture of our universe: A view from modern cosmology
Authors: David D. Reid et al.
Comments: pedagogical review, 37 pages

Horoshii obzor po sovremennoi kosmologii.


astro-ph/0209506 Properties of the Interstellar Medium and the Propagation of Cosmic Rays in the Galaxy
Authors: A.D.Erlykin, A.A.Lagutin, A.W.Wolfendale
Comments: 18 pages, 5 figures, accepted by Astropartoicle Physics

Krome togo, chto neizvestno otkuda berutsya kosmicheskie luchi sverhvysokih energii (i est' li oni voobshe), my ne ochen' horosho ponimaem proishozhdenie obychnyh kosmicheskih luchei: neyasno chto inzhektiruet chasticy, neyasno kak oni uskoryayutsya. Hotya s poslednim voprosom situaciya poluchshe: vrode by luchi uchkoryayutsya v ostatkah sverhnovyh. Vdobavok ko vsemu etomu sushestvuet problema rasprostraneniya kosmicheskih luchei v Galaktike, osobenno v svyazi s neizvestnoi (v neobhodimyh melkih detalyah) strukturoi mezhzvezdnoi sredy i magnitnogo polya. Vot etomu-to voprosu i posvyashena rassmatrivaemaya stat'ya.

Avtory zadayut fraktal'nuyu strukturu sredy i polya. Eto pomogaet reshit' nektorye problemy, naprimer problemu anomal'noi diffuzii, kotoraya neobhodima dlya sozdaniya galo kosmicheskih luchei (v etoi nauke termin galo imeet znachenie otlichnoe ot prinyatogo v zvezdnoi astronomii ili kosmologii - masshtaby drugie).


obzor astro-ph/0209514 Observations and Theory of Supernovae
Authors: J. Craig Wheeler
Comments: AAPT/AJP Resource Letter, American Journal of Physics, in press, 19 pages, 208 references

Bibliograficheskii obzor po sverhnovym. Ssylki razbity na neskol'ko tem: nablyudeniya spektrov, spektropolyarimetriya, krivye bleska, teoriya termoyadernyh vzryvov, kollaps yadra, radioaktivnyi raspad, kosmologicheskie prilozheniya, svyaz' s gamma-vspleskami.


astro-ph/0209519 A Probable Optical Counterpart for the Isolated Neutron Star RX J1308.6+2127
Authors: D. K. Kaplan, S. R. Kulkarni, M. H. van Kerkwijk
Comments: 4 pages, 2 figures. Uses emulateapj5.sty, onecolfloat5.sty. Accepted by ApJ Letters

Vsego dva ob'ekta iz "velikolepnoi semerki" radiotihih blizkih neitronnyh zvezd obnaruzheny v optike. Glubokie poiski na Kosmicheskom teleskope, vozmozhno, dali eshe odnogo opticheskogo dvoinika. Eto stalo vozmozhnym blagodarya nablyudeniyam istochnika na Chandre (u Chandry ochen' malen'kii boks oshibok). Kak i u drugih istochnikov opticheskii spektr lezhit vyshe chernotel'nogo prodolzheniya rentgenovskogo spektra. Eto mozhet ob'yasnyat'sya atmosferoi neitronnoi zvezdy.


astro-ph/0209520 The Quiescent Counterpart of the Soft Gamma-ray Repeater SGR 0526-66
Authors: S. R. Kulkarni, D. L. Kaplan, H. L. Marshall, D. A. Frail, T. Murakami, and D. Yonetoku
Comments: 7 pages, 3 figures. Uses emulateapj5.sty, onecolfloat5.sty. Submitted to ApJ

Anomal'nye rentgenovskie pul'sary (ARP) i istochniki myagkih povtoryayushihsya gamma-vspleskom (MPG) - bliznecy-brat'ya. Polagayut, chto oba tipa ob'ektov - magnetary. Nablyudeniya SGR 0526-66 na Chandre v spokoinom sostoyanii podtverzhdayut "rodstvo". Klassicheskii MPG vedet sebya seichas kak obychnyi ARP.




Arhiv statei, voshedshih v predydushie vypuski.

Razdely arhiva (s iyulya 2002 g.):
obzory, 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.
Obzornye stat'i v astro-ph s 2001 g.

Sergei Popov

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