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The R.A.P.Project "Prosto o slozhnom" "Astro-ph za 2006 g." Nemnogo statistiki Predydushii vypusk (N194) Slovar' astroterminov Spisok missii i teleskopov Obzory UFN Stat'i SOZh ANKa Dnya 09.09.2008. Chernyi val's s feierverkom 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/0809.2442 Struktura s razmerom poryadka gorizonta okolo kandidata v sverhmassivnye chernye dyry v centre Galaktiki arxiv/0809.4231 Opticheskie i infrakrasnye vspyshki ot tranzientnogo gallakticheskogo istochnika povtoryayushihsya gamma-vspleskov arxiv/0809.5174 Katalog gamma-vspleskov, zaregistrirovannyh monitorom na bortu BeppoSAX Otdel'nye stat'i Obrazovanie GMO putem agglomeracii i za schet samogravitacii Struktura s razmerom poryadka gorizonta okolo kandidata v sverhmassivnye chernye dyry v centre Galaktiki O himicheskoi evolyucii nashei Galaktiki Vnegalakticheskie ogranicheniya na nachal'nuyu funkciyu mass Nablyudeniya rentgenovskih dvoinyh v radiodiapazone s vysokim razresheniem Poisk samyh massivnyh galaktik. II. Struktura, okruzhenie i obrazovanie Kvarkovoe veshestvo v kompaktnyh zvezdah: astrofizicheskie prilozheniya i vozmozhnye proyavleniya Opticheskie i infrakrasnye vspyshki ot tranzientnogo gallakticheskogo istochnika povtoryayushihsya gamma-vspleskov Kinematicheskaya struktura magellanovoi sistemy Katalog gamma-vspleskov, zaregistrirovannyh monitorom na bortu BeppoSAX Iz razdela physics Gregor Ventcel' Teoriya otnositel'nosti i teorema Pifagora Polyarizacionnye izmereniya i ih perspektivy: PVLAS Phase II Zaval v koncentracii citirovanii, 1900-2007 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. Obsudit' na forume Scientific.RU Obsudit' na forume Zvezdocheta Obsudit' v bloge na Subscribe.ru Avtor proekta Sergei Popov Ranee uchastvovali: Mihail Prohorov Ekaterina Kasimova Diskussii po stat'yam Arhiva CosmoCoffee arXiv Blog Postav'te u sebya nashu knopku! Proekt razmeshen na saitah: Smotri takzhe diskussii i blogi: Informacionnye partnery Vy mozhet takzhe razmestit' na svoem saite nashu lentu obzorov Kniga avtora obzorov Novostnye lenty Novosti kosmonavtiki Novosti Nauchpopa Novosti ot UFN Informnauka Researcher@ Elementy.Ru Grani.Ru Perst Podpiska na rassylku obzorov na Subscribe.Ru Druzhestvennye rassylki: "Astronomiya segodnya" "Okno vo Vselennuyu" Spisok astrorassylok

Obzory preprintov astro-ph Vypusk N195 astro-ph za 12 - 30 sentyabrya 2008 goda: izbrannye stat'i Referaty otdel'nyh statei arxiv:0809.1942 Obrazovanie GMO putem agglomeracii i za schet samogravitacii (GMC formation by agglomeration and self gravity) Authors: Clare Dobbs Comments: 16 pages, 12 figures, accepted for publication in MNRAS. GMO - gigantskie molekulyarnye oblaka. Kak oni obrazuyutsya tochno ne izvestno. Vidimo rabotaet neskol'ko mehanizmov. V dannoi stat'e s pomosh'yu chislennogo modelirovaniya issleduyutsya dva iz nih. Komp'yuternye simulyacii pokazali, chto pri nizkoi poverhnostnoi plotnosti gaza GMO obrazuyutsya v udarnyh volnah, svyazannyh so spiral'noi strukturoi, putem agglomeracii. T.e., otnositel'no nebol'shie sgustki gaza obrazuyut strukturu bol'shogo masshtaba. Pri vysokoi poverhnostnoi plotnosti gaza stanovitsya vazhnoi samogravitaciya. I GMO obrazuyutsya v rezul'tate razvitiya gravitacionnoi neustoichivosti. V nashei Galaktike plotnost' gaza takova, chto kak raz nachinaet dominirovat' gravitacionnaya neustoichivost'. Avtor podrobno perechislyaet, chto ne bylo uchteno v modeli. V itoge vse-taki sozdaetsya oshushenie, chto: "Mnogoe sdelano, no mnogoe eshe predstoit." arxiv:0809.2442 Struktura s razmerom poryadka gorizonta okolo kandidata v sverhmassivnye chernye dyry v centre Galaktiki (Event-horizon-scale structure in the supermassive black hole candidate at the Galactic Centre) Authors: Sheperd Doeleman et al. Comments: 12 pages including 2 figures, Nature, vol 455, p 78, 2008 Po dannym nablyudenii v millimetrovom diapazone avtory obnaruzhili strukturu s uglovym razmerom 30-50 mikrosekund, chto men'she ozhidaemogo razmera gorizonta.Eto mozhet govorit' o tom, chto znachitel'naya chast' izlucheniya ot Sgr A* mozhet idti ot akkrecionnogo potoka, a ne voznikat' v neposredstvennoi blizosti ot gorizonta. T.e., vidimo, polozhenie chernoi dyry ne sovpadaet s izmeryaemym polozheniem Sga A* na urovne desyatkov mikrosekund dugi. Odnako avtory pishut, chto dlya okonchatel'noi yasnosti nuzhny nablyudeniya na volne 1.3 millimetra s chut' bol'shei tochnost'yu. miniobzor arxiv:0809.2507 O himicheskoi evolyucii nashei Galaktiki (On the chemical evolution of the Milky Way) Authors: N. Prantzos Comments: 12 pages, 13 figures, Invited talk at IAU Symposium No. 254 "The Galaxy Disk in Cosmological Context", Eds. J. Andersen et al., in press Obsuzhdaetsya neskol'ko principial'nyh voprosov, kasayushihsya himicheskoi evolyucii nashei Galaktiki: raspredelenie metallichnosti v galo, sootnoshenie vozrast-metallichnost' v solnechnoi okrestnosti i radial'noe smeshivanie zvezd v diske Galaktiki. arxiv:0809.2518 Vnegalakticheskie ogranicheniya na nachal'nuyu funkciyu mass (Extragalactic Constraints on the Initial Mass Function) Authors: Stephen M. Wilkins, Andrew M. Hopkins, Neil Trentham, Rita Tojeiro Comments: 6 pages, 5 figures, accepted to MNRAS Rech' idet o zvezdnoi funkcii mass. Avtory pytayutsya ponyat', kak nashi dannye po nachal'noi funkcii mass zvezd mozhno uvyazat' s kosmologicheskimi dannymi po istorii zvezdoobrazovaniya, poskol'ku v etom dele est' nestykovki. miniobzor arxiv:0809.2583 Nablyudeniya rentgenovskih dvoinyh v radiodiapazone s vysokim razresheniem (High-resolution radio observations of X-ray binaries) Authors: James Miller-Jones Comments: 10 pages. To appear in proceedings of "The Universe under the Microscope - Astrophysics at High Angular Resolution" (Bad Honnef, Germany, April 2008), eds. R. Schoedel, A. Eckart, S. Pfalzner, and E. Ros, published in Journal of Physics: Conference Series by Institute of Physics Publishing Opisany rezul'taty nablyudenii s pomosh'yu VLBI. Rassmatrivayutsya sistemy s raznymi kompaktnymi ob'ektami: belymi karlikami, neitronnymi zvezdami, chernymi dyrami. Vo vremya vspyshek nekotorye iz tesnyh dvoinyh sistem s kompaktnymi ob'ektami stanovyatsya ochen' yarkimi (neskol'ko yanskih) radioistochnikami, i ih davno i uspeshno issleduyut metodami interferometrii so sverhdlinnoi bazoi. V otlichii ot aktivnyh yader galaktik tesnye dvoinye sistemy pokazyvayut gorazdo bolee korotkie harakternye vremena, poskol'ku poslednie masshtabiruyutsya s massoi chernoi dyry. T.e., vmesto let my imeem chasy. Eto pozvolyaet izuchat' dinamiku dzhetov i tp. arxiv:0809.2602 Poisk samyh massivnyh galaktik. II. Struktura, okruzhenie i obrazovanie (A Search for the Most Massive Galaxies. II. Structure, Environment and Formation) Authors: M. Bernardi et al. Comments: 21 pages, 19 figures, accepted for publication in MNRAS Avtory issleduyut vyborku iz 43 galaktik rannih tipov po dannym SDSS. Kriteriem otbora byla dispersiya skorostei vyshe 350 km v sek. Detal'nye nablyudeniya na Habble umen'shili vyborku na polovinu, tak kak okazalos', chto eto prosto blizkie galaktiki. Ostavshayasya polovina - eto v samom dele ob'ekty s bol'shimi dispersiyami. Pravda, ni u odnoi galaktiki ona ne prevoshodit 400-450 km v sek. Otobrannye galaktiki predstavlyayut soboi dovol'no interesnyi klass: eto kompaktnye, samye massivnye i samye plotnye galaktiki. Oni vypadayut iz mnogih horosho ustanovlennyh korrelyacii dlya galaktik rannih tipov. Sm. takzhe stat'yu arxiv:0809.2609, kotoraya prodolzhaet cikl rabot etoi gruppy. V nei rassmatrivaetsya struktura massivnyh galaktik. obzor arxiv:0809.4228 Kvarkovoe veshestvo v kompaktnyh zvezdah: astrofizicheskie prilozheniya i vozmozhnye proyavleniya (Quark matter in compact stars: astrophysical implications and possible signatures) Authors: I. Bombaci Comments: 24 pages, Invited talk at "the Eleventh Marcel Grossman Meeting on General Relativity", Berlin 2006 Bol'shoi obzor po kvarkovym zvezdam i svyazannoi s etim fizikoi. Formul malo - t.e., napisano ponyatno. Privedeny osnovnye sovremennye kandidaty (hotya, pozhalui, seichas oni kazhutsya menee sil'nymi, chem neskol'ko let nazad). Dan horoshii istoricheskii obzor. Bolee 100 ssylok. arxiv:0809.4231 Opticheskie i infrakrasnye vspyshki ot tranzientnogo gallakticheskogo istochnika povtoryayushihsya gamma-vspleskov (Optical and infrared flares from a transient Galactic soft gamma-ray repeater) Authors: A.J. Castro-Tirado et al. Comments: 20 pages, Version submitted to Nature on 31 Jan 2008. A substantially revised version of this work has been published in Nature, vol. 455 issue 7212 pp 506-509 under the title "Flares from a Galactic magnetar suggest a missing link to dim isolated neutron stars" Srazu dve gruppy (sm. vtoruyu stat'yu arxiv:0809.4043) dokladyvayut ob obnaruzhenii interesnogo opticheskogo tranzienta. Tranzient nablyudalsya posle gamma-vspleska. Vsplesk byl obnaruzhen 10 iyunya 2007 goda sputnikom SWIFT. Srazu stalo yasno, chto eto skoree vsego kakoi-to galakticheskii ob'ekt, a ne kosmologicheskii gamma-vsplesk. Eto sledovalo ne tol'ko iz togo, chto istochnik lezhit v ploskosti Galaktiki, no i iz ryada drugih svoistv. Zatem, pribor RXT obnaruzhil rentgenovskuyu vspyshku. Takzhe bylo obnaruzheno i opticheskoe izluchenie. Sperva vsya summa dannyh ukazyvala na to, chto eto mozhet byt' dvoinaya sistema s chernoi dyroi (bystraya rentgenovskaya novaya). Odnako novye dannye govoryat o drugom. V rassmatrivaemyh stat'yah avtory soobshayut o nablyudenii neskol'kih desyatkov opticheskih vspyshek, ochen' pohozhih na rentgenovskie vspyshki magnitarov. Vrode by est' ukazaniya na harakternyi period okolo 7 sekund. Poetomu obe gruppy interpretiruyut dannye, kak opticheskoe izluchenie magnitara. Togda eto budet pervoe takoe opticheskoe nablyudenie. Odnako ne isklyucheno, chto mogut poyavit'sya i drugie modeli. miniobzor arxiv:0809.4268 Kinematicheskaya struktura magellanovoi sistemy (Kinematical Structure of the Magellanic System) Authors: Roeland P. van der Marel et al. Comments: 12 pages, including 1 figure. Invited review to be published in Proceedings of IAU Symposium 256, The Magellanic System: Stars, Gas, and Galaxies, Jacco Th. van Loon & Joana M. Oliveira, eds. 2009 (Cambridge: Cambridge University Press) My poka vse-taki ne ochen' horosho predstavlyaem sebe istoriyu sovmestnoi zhizni nashei Galaktiki i ee blizhaishih krupnyh sputnikov - Magellanovyh oblakov. V nebol'shom obzore avtory summiruyut imeyushuyusya informaciyu (s uporom na svoi issledovaniya). Soglasno avtoram, Magellanovy oblaka imeyut dostatochno bol'shuyu skorost' (eto izmereno po nablyudeniyam na Habble). Znachit, oni lish' pervyi raz proletayut mimo Mlechnogo puti. Hotya, vyvod zavyazan na ocenku polnoi massy nashei Galaktiki (vklyuchaya galo temnoi materii). No v lyubom sluchae t.n. Magellanov potok, po mneniyu avtorov, ne mozhet byt' prosto prilivnym hvostom. Sm. takzhe dve drugie, bolee korotkie, zametki toi zhe gruppy: arxiv:0809.4263 i arxiv:0809.4265. katalog arxiv:0809.5174 Katalog gamma-vspleskov, zaregistrirovannyh monitorom na bortu BeppoSAX (The Gamma--Ray Burst catalog obtained with the Gamma Ray Burst Monitor aboard BeppoSAX) Authors: F. Frontera et al. Comments: 48 pages, 14 figures, 4 Tables. Accepted for publication in The Astrophysical Journal Supplement Katalog vklyuchaet v sebya 1082 vspleska v diapazone 40-700 keV, kotorye byli obnaruzheny sputnikov BeppoSAX. My budem starat'sya hotya by perechislit' interesnye (dlya shirokoi publiki) stat'i, poyavivshiesya v razdele physics (vklyuchaya cross-listing). arxiv:0809.2102 Gregor Ventcel' (Gregor Wentzel) Authors: Peter G.O. Freund, Charles J. Goebel, Yoichiro Nambu, Reinhard Oehme Comments: 12 pages, This Gregor Wentzel Memoir is scheduled to appear as a National Academy of Sciences Biographical Memoir Vse znayut WKB-priblizhenie. W-Wentzel. Stat'ya napisana k 110-letiyu so dnya rozhdeniya. V osnovnom, eto nauchnaya biografiya, no v nachale stat'i kratko i ischerpyvayushe privedeny osnovnye sobstvenno biograficheskie sobytiya. Teksta ne tak uzh mnogo - vse ochen' lakonichno i chetko, - sovetuyu prochest'. arxiv:0809.2379 Teoriya otnositel'nosti i teorema Pifagora (The theory of relativity and the Pythagorean theorem) Authors: L.B. Okun Comments: 19 pages, Physics-Uspekhi 51 (2008) 622 Angliiskaya versiya stat'i Okunya v UFN. V dostupnoi forme izlagayutsya nekotorye neprostye momenty v STO i OTO, o kotoryh chasto sporyat. arxiv:0809.4208 Polyarizacionnye izmereniya i ih perspektivy: PVLAS Phase II (Polarization measurements and their perspectives: PVLAS Phase II) Authors: G. Cantatore et al. Comments: 4 pages, Paper submitted to the proceedings of the "4th Patras Workshop on Axions, WIMPs and WISPs", DESY, Hamburg Site /Germany, 18-21 June 2008 V teorii elektromagnetizma predskazyvayutsya razlichnye interesnye nelineinye effekty. Krome togo, teoretiki predskazyvayut sushestvovanie vsyakih trudnoulovimyh chastic, naprimer aksionov. V mire idut i obsuzhdayutsya raznye eksperimenty v etoi oblasti. Neskol'ko let nazad burno obsuzhdalsya rezul'tat proekta PVLAS. Togda avtory eksperimenta zayavili o registracii signala, kotoryi mog svidetel'stvovat' o rozhdenii aksionov. V ustanovke issledovalos' prohozhdenie sveta cherez sil'noe magnitnoe pole. Signal okazalsya apparatnym, t.e. otkrytie ne sostoyalos'. Seichas avtory polagayut, chto pervaya faza eksperimenta sebya ischerpala, i nuzhno stroit' novuyu ustanovku. Pravda, ne bolee krupnuyu, kak mozhno bylo ozhidat', a skoree bolee prodvinutuyu. Ob etom i idet rech' v zametke. arxiv:0809.5250 Zaval v koncentracii citirovanii, 1900-2007 (The decline in the concentration of citations, 1900-2007) Authors: Vincent Lariviere, Yves Gingras, Eric Archambault Comments: 9 pages Avtory polemiziruyut so stat'ei Evansa (Evans 2005), v kotoroi on utverzhdaet, chto on-lainovyi dostup privodit ne k rasshireniyu spektra citiruemyh statei, a k suzheniyu chisla citircemyh statei. Lariv'e i ego soavtory pokazyvayut na bol'shom materiale, chto vyvod Evansa ne veren. V chastnosti, snizhaetsya dolya necitiruemyh statei po mere poyavleniya on-lainovogo dostupa, i razmyvaetsya maksimum citirovaniya. Vernut'sya k nachalu stranicy

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