40 let otkrytiyu
radiopul'sarov!
Podpiska na rassylku obzorov astro-ph na Subscribe.Ru
Chislo podpischikov perevalilo 2900! Spasibo vam, druz'ya!
Kommentarii k rassylke mozhno ostavit' zdes'
Soderzhanie i bystryi perehod k razdelam obzora
Vodyanoi par v atmosfere tranzitnoi ekzoplanety Pyatyi i shestoi relizy Sloanovskogo Cifrovogo obzora neba Zayavka missii DARWIN v EKA Teoriya obrazovaniya zvezd Modelirovanie plotnyh zvezdnyh sistem Pervyi katalog gamma-vspleskov pribora BAT na bortu SWIFT
Otdel'nye stat'i
Iz razdela physics
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
Razdely arhiva (s aprelya 2003 g.): Poleznye astronomicheskie ssylki. Korotkoe esse ob elektronnyh preprintah. Obzornye stat'i v astro-ph 2001-2003 gg.
Avtor proekta
Diskussii po stat'yam Arhiva
Proekt razmeshen na saitah:
Smotri takzhe diskussii i blogi:
Informacionnye partnery
Vy mozhet takzhe razmestit' na svoem saite nashu lentu obzorov Kniga avtora obzorov 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 N164
astro-ph za 20 - 31 iyulya 2007 goda: izbrannye stat'i
Referaty otdel'nyh statei
Authors: A. van der Meer, L. Kaper, M. H. van Kerkwijk, M. H. M. Heemskerk, E.P.J. van den Heuvel Comments: 20 pages, Accepted for publication in Astronomy and Astrophysics Utochneny znacheniya mass neitronnyh zvezd v treh rentgenovskih dvoinyh. Znacheniya takie 1.06+0.11/-0.10 mass Solnca dlya SMC X-1, 1.25+0.11/-0.10 - dlya LMC X-4, i 1.34+0.16/-0.14 - dlya Cen X-3, Obratite vnimanie na nizkoe znachenie dlya SMC X-1.
Authors: T. Lindner et al. Comments: 24 pages, 15 figures, Accepted for publication in Astroparticle Physics Sobstvenno, nichego supervydayushegosya tut net - nu otnablyudali eshe paru lacertid na sotnyah GeV. Odnako dannyi rezul'tat - eto povod skazat' paru slov ob odnoi ochen' interesnoi ustanovke - STACEE.
STACEE - Solar Tower Atmospheric Cherenkov Effect Experiment STACEE - eto solnechnaya stanciya. Tam mnogo-mnogo zerkal, kotorye dnem sobirayut solnechnyi svet, chtoby davat' energiyu. A vot po nocham na STACEE vedut nablyudeniya kosmicheskih luchei! I dazhe poluchayut rezul'taty. Konechno, specializirovannye ustanovki tipa H.E.S.S., MAGIC luchshe, no tem ne menee ...
Authors: Tanja M. Kneiske Comments: 10 pages, 2 figures, proc. of FRASCATI workshop 2007, Vulcano, Italy, to be pub. in Chinese Journal of Astronomy & Astrophysics Esli s rentgenovskim fonom (dazhe zhestkim) situaciya na 80-90 procentov yasna, to s gamma-fonom ne vse tak prosto. V obzore privodyatsya osnovnye dannye, summiruyushie nashe znanie "do GLAST".
Authors: F. Verrecchia, J.J.M. in 't Zand, P. Giommi, P. Santolamazza, S. Granata, J.J. Schuurmans, A. Antonelli Comments: 14 pages, 11 figures, Catalogue, Accepted for publication on A&A Katalog soderzhit dannye po 253 istochnikam, nablyudavshimisya sputnikov za 6 let raboty (1996-2002). Napomnyu, chto rech' idet o diapazone 2-28 keV. Pribor imel shirokoe pole zreniya (40 na 40 gradusov). Yasno, chto za eto bylo zaplacheno otnositel'no nevysokoi chuvstvitel'nost'yu i nizkim uglovym razresheniem.
Authors: Hsi-Yu Schive, Chia-Hung Chien, Shing-Kwong Wong, Yu-Chih Tsai, Tzihong Chiueh Comments: 30 pages, 20 figures, submitted to NewAstronomy, 20 July, 2007 Bukval'no neskol'ko dnei nazad izvestnyi rossiiskii nauchnyi zhurnalist Aleksandr Sergeev, zaidya v GAISh rasskazyval mne v 31-i komnate za chashkoi chaya o vozmozhnosti sozdaniya klasterov s proizvoditel'nost'yu neskol'ko teraflop na videokartah NVIDIA. Ya kak-to skepticheski otnessya k etomu (proizvoditel'nost'-to bol'shaya, no vot kak tam s pamyat'yu.... Vse ravno eto ne deshevo po nashim merkam, vozni mnogo i tp.). No vot - kitaicy uzhe blagopoluchno gonyayut takie sistemy na astrofizicheskih zadachah. Hotya, vse ravno, samaya krasivaya ideya - eto klastery na XBOX pod Linux. Delo v tom, chto igrovye pristavki v principe mozhno kupit' deshevle sebestoimosti, esli proizvoditel' vedet nekotoruyu rynochnuyu igru i dumaet v pervuyu ochered' ob osnovnyh potrebitelyah, kotorye pokupayut po odnoi pristavke, a potom kuchu igr :)
Obsudit' v ZhZh-soobshestve
ru_astroph.
Authors: Giovanna Tinetti et al. Comments: 14 pages, Nature 2007, 448, p 163 Original nashumevshei stat'i o liniyah vodyanogo para v spektre odnoi iz ekzoplanet. Rech' idet o goryachem yupitere HD189733b. nablyudeniya provodilis' na Spitcere v mikronnom diapazone dlin voln.
Obsudit' v ZhZh-soobshestve
ru_astroph.
Authors: L. P. Grishchuk Comments: 43 pages including 9 figures, based on an invited lecture at the first J.A.Wheeler School on Astrophysical Relativity, June 2006 Lekciya posvyashena perspektivam obnaruzheniya effektov vozdeistviya reliktovyh (kosmologicheskih) gravitacionnyh voln na fonovoe mikrovolnovoe (t.e. reliktovoe) izluchenie). Po mneniyu avtora uzhe sleduyushee pokolenie eksperimentov (Planck i dr.) smozhet dat' polozhitel'nyi rezul'tat.
Authors: Kinya Hibino et al. Comments: 4 pages, 8 figures, Accepted for publication in Astrophysics and Space Science, proceeding of "The Multi-Messenger Approach to High-Energy Gamma-Ray Sources", Barcelona, July 4-7, 2006
"Brilliantovyi ty moi!" (obsheupotreb.) Predlagaetsya novyi variant detektorov dlya gamma-teleskopov, rabotayushih v diapazone do 10 MeV. V nem ispol'zuyutsya iskusstvennye almazy. Avtory nadeyutsya dostich' ochen' vysokogo uglovogo razresheniya.
Authors: N. Rea et al. Comments: 9 pages, 5 figures; accepted for publication on MNRAS Predstavleny rezul'taty ochen' glubokih nablyudenii odnogo iz anomal'nyh rentgenovskih pul'sarov na XMM-Newton. Nikakih spektral'nyh linii ne obnaruzheno.
Authors: Jennifer K. Adelman-McCarthy, et al., for the SDSS Collaboration Comments: ApJ Supp, in press, October 2007. This paper describes DR5. The SDSS Sixth Data Release (DR6) is now public Ocherednoi pyatyi vypusk dannyh SDSS. Dostupen on-lain. Ob'em dannyh v sravnenii s chetvertym relizom vyros na 20 procentov. Krome togo, poyavilis' novye opcii: povtornye skany nekotoryh zon, spektroskopicheskie dannye s SEGUE, izobrazheniya M31 i yadra skopleniya galaktik v Persee. Nemedlenno, predstavlyayu i shestoi reliz. On vazhen tem, chto zakonchen obzor oblasti vokrug severnogo galakticheskogo polyusa. Utochneny kalibrovki, sdelany drugie uluchsheniya.
Obsudit' v ZhZh-soobshestve
ru_astroph.
Authors: Alain Leger, Tom Herbst, et al Comments: 35 pages, This a compressed version of the DARWIN mission proposal to ESA for its "Cosmic Vision" 2015-2025 program A full resolution version can be obtained from the Web site indicated on the cover page Eto szhataya versiya zayavki na sozdanie izvestnoi missii DARWIN, napravlennoi v Evropeiskoe kosmicheskoe agentstvo. Missiya, kak izvestno, stavit svoei zadachei obnaruzhenie planet tipa Zemli i poisk sledov zhizni na nih. V zayavke szhato opisano vse: i obshee sostoyanie del, i koncepciya missii, i nauchnye zadachi, i tehnicheskie aspekty, i stoimost' ....
Obsudit' v ZhZh-soobshestve
ru_astroph.
Authors: Christopher F. McKee, Eve C. Ostriker Comments: 120 pages, to appear in ARAA. Obsuzhdayutsya vse aspekty obrazovaniya zvezd.
Authors: A. Lobel Comments: 6 pages, 3 figures. To appear in The Ultraviolet Universe: Stars from Birth to Death, 26th meeting of the IAU, Joint Discussion 4, 16-17 August 2006, Prague, Czech Republic, p. 167. Eds. Ana I. Gomez de Castro and Martin A. Barstow, Publ. of Univ. Complutense de Madrid. Na saite predstavleno bol'shoe chislo zvezdnyh spektrov (vklyuchaya Solnce).
Authors: G. E. Brown, C. -H. Lee, E. Moreno Mendez Comments: 3 pages, 1 figures Avtory rassmatrivayut vopros o tom, ne svyazany li nekotorye izvestnye galakticheskie kandidaty v chernye dyry s gamma-vspleskami i gipernovymi. T.e., ne bylo li v moment rozhdeniya sootvetstvuyushih chernyh dyr gamma-vspleskov. Vyvod avtorov v otnoshenii neskol'kih ob'ektov [Nova Sco (GRO J1655-40), Il Lupi (4U 1543-47), XTE J1550-564, GS 2023+338] utverditel'nyi. A vot izvestnyi kandidat v chernye dyry v sisteme Lebed' H-1 s gamma-vspleskom ne svyazan, po mneniyu avtorov. Svyazano eto, opyat' zhe "kak polagayut avtory", s raznymi massami komponent v dvoiyh sistemah.
Authors: Fiorella Burgio Comments: 8 pages, 5 figures, invited talk given at NPA3, Dresden, March 2007 Predstavlen ocherednoi raschet uravneniya sostoyaniya vnutri kompaktnyh ob'ektov. Poluchennoe znachenie maksimal'noi massy neitronnoi zvezdy - 1.7 massy Solnca - po vsei vidimosti slishkom malo, choby udovletvorit' nablyudeniyam. Avtor obsuzhdaet, kakim dolzhno byt' povedenie veshestva pri vysokih plotnostyah, chtoby vse bylo OK.
Authors: L. Piro, J.W. den Herder, T. Ohashi, et al Comments: This is a low resolution version of the proposal submitted to ESA in response to the Cosmic Vision Call. Opisan proekt nedorogoi missii (ne slishkom tyazhelaya, ne predpolagaet sozdanie novyh tehnologii) dlya issledovanii v gamma i rentgenovskom diapazonah. Avtory zayavki rabotali s BeppoSAX, poetomu missiya vo mnogom baziruetsya na opyte raboty s etim apparatom.
Authors: A. Vazdekis, R.F. Peletier Comments: This is the table of contents of the upcoming proceedings of IAU Symposium 241. The book will appear in September, from Cambridge University Press, and will also be available electronically Osen'yu poyavitsya sbornik trudov sootvetstvuyushego simpoziuma. Vse eto bogatstvo mozhno budet skachat' zdes'. A poka mozhno posmotret' na vyhodnye dannye knigi, soderzhanie i vvodnuyu stat'yu.
Authors: Piet Hut, Shin Mineshige, Douglas C. Heggie, Junichiro Makino Comments: 23 pages, to appear in Prog. Theor. Phys Rassmotreny razlichnye aspekty modelirovaniya tesnyh zvezdnyh sistem, v kotoryh vozmozhny chastye vzaimodeistviya zvezd (zahvaty, obmeny i tp.).
Authors: T.K.Suzuki et al. Comments: 4 pages, 3 figures embedded, submitted to ApJL Rassmatrivaetsya rol' al'venovskih voln vo vzryvah sverhnovyh. Volny generiruyutsya konvekciei v protoneitronnoi zvezde. Dlya vysokoi effektivnosti neobhodimo moshnoe magnitnoe pole (poryadka 10 v 15-i stepeni Gauss i vyshe), no zato vovse ne obyazatel'no nalichie bystrogo vrasheniya.
Authors: G. Cusumano et al. Comments: 4 pages, 2 figures, PDF format, Proceedings of 30th ICRC, International Cosmic Ray Conference 2007, Merida, Yucatan, Mexico, 3-11 July 2007 GAW - Gamma Air Watch. Eto prototip, na kotorom otrabatyvayutsya novye tehnologii. On budet sostoyat' iz treh 2-metrovyh zerkal. Ideya sostoit v poluchenie vysokogo kachestva rezul'tatov pri bol'shom pole zreniya (24 na 24 gradusa). Pervyi iz treh teleskopov budet ustanovlen uzhe etoi osen'yu.
Authors: Kenji Bekki Comments: 4 pages, 3 figures, to appear in the proceedings of `Galaxies in the Local Volume'', Sydney, 8 to 13 July, 2007 Opisany rezul'taty chislennogo modelirovaniya evolyucii sputnika nashei Galaktiki na protyazhenii poslednih 2.5 milliardov let. Interesno, chto v modeli obnaruzhivaetsya perenos malometallichnogo gaza iz Malogo oblaka v Bol'shoe. Avtor svyazyvaet eto s nablyudaemymi v BMO malometallichnymi molodymi zvezdami.
Authors: T. Sakamoto et al. Comments: 63 pages, 23 figures, Submitted to ApJS Predstavlen katalog gamma-vspleskov, zaregistrirovannyh priborom BAT (Burst Alert Telescope) na bortu sputnika SWIFT v period s 19 dekabrya 2004 goda po 16 iyunya 2007. Vklyucheno 237 sobytii. Tablicy s dannymi dostupny zdes'.
My budem starat'sya hotya by perechislit' interesnye (dlya shirokoi publiki) stat'i, poyavivshiesya v razdele physics (vklyuchaya cross-listing).
Authors: Gianni Fiorentini, Marcello Lissia, Fabio Mantovani Comments: 56 pages in RMP ReVTeX format, 36 figures, submitted to Physics Reports. Bol'shoi obzor, posvyashennyi geoneitrino i issledovaniyam zemnyh nedr s ih pomosh'yu. Geoneitrino obrazuyutsya v rezul'tate raspada radioaktivnyh elementov (napomnyu, chto dlya "tomografii" Zemli v principe mozhno ispol'zovat' i solnechnye neitrino, takzhe, neitrino ot uskoritelei mogut davat' v tom chisle i geofizicheskuyu informaciyu). Raspadayutsya uran, torii, kalii. Informaciya okazyvaetsya unikal'noi, t.k. voobshe kanalov polucheniya dannyh ob ochen' glubokih nedrah nemnogo. Obzor soderzhit mnogo interesnyh dannyh po stroeniyu Zemli. Krome togo, rassmatrivayutsya interesnye proekty eksperimentov, vozmozhnye proryvy v nashem ponimanii stroeniya planety i mnogoe drugoe.
Authors: Anthony F. J. van Raan Comments: 17 pages, 1 table, 11 figures Ocherednaya stat'ya po naukometrii.
Authors: Thomas P Sotiriou, Valerio Faraoni, Stefano Liberati Comments: 21 pages Stat'ya budet interesna vsem, kto interesuet sozdaniem novyh teorii gravitacii (osobenno, "na kolenke"). Avtory obsuzhdayut nabor principov, kotoryi nachali obsuzhdat' uzhe desyatki let nazad, kotorye neobhodimy pri popytkah sozdat' novuyu teoriyu gravitacii. Slozhnosti nachinayutsya uzhe s sozdaniem edakogo "rukovodstva po sozdaniyu novyh teorii (dlya chainikov)". Srazu uzh i ssylka na svezhuyu stat'yu, posvyashennuyu odnomu iz aspektov rasshirennyh teorii gravitacii: arxiv:0707.2819.
Authors: Hans-Ake Gustafsson Comments: 6 pages, Proceedings of HCP 2006 Korotkii ponyatnyi obzor, posvyashennyi detektoru ALICE (A LArge Ion Collider Experiment) na LHC. Ozhidaetsya, chto k koncu goda sozdanie detektora budet zaversheno.
Authors: Sushil Shetty, Xylar S. Asay-Davis, Philip S. Marcus Comments: Manuscript accepted to Journal of the Atmospheric Sciences, March 2007 Issleduetsya povedenie Bol'shogo Krasnogo Pyatna i ego okrestnostei.
Authors: Michael Schreiber Comments: 9 pages, 2 figures, submitted to Scientometrics Posle znamenitoi stat'i Hirsha, v kotoroi byl vveden h-indeks, poyavilos' mnozhestvo popytok modificirovat' etot pokazatel' ili vvesti svoi. Napomnyu, chto h-indeks pokazyvaet chislo statei s citiruemost'yu bol'she h (t.e. indeks, ravnyi 12, pokazyvaet, chto u uchenogo est' 12 statei s citiruemost'yu vyshe 12). Indeks Hirsha ochevidno niveliruet nalichie u uchenogo neskol'kih supercitiruemyh statei (k primeru, esli vy napisali superrabotu s citiruemost'yu 10000, a potom delali srednie dobrotnye raboty, kazhdaya iz kotoryh poluchala citiruemost' 10, to do indeksa Hirsha 12 vy nikgoda ne doberetes', hotya za superrabotu vam mozhet uzhe nobelevku vruchili). Sobstvenno, indeks Hirsha dlya etogo i ne prednaznachen. On pokazyvaet produktivnost'. Mozhno ispol'zovat' ego vmeste s tradicionnym polnym citirovaniem, i togda vse budet neploho (vazhno tol'ko kak-to uchityvat' dinamiku nabora indeksov). Tem ne menee, Egg (Egghe) predlozhil svoi indeks - g - kotoryi pytaetsya odnim chislom opisat' i h-index, i vklad nebol'shogo chisla superstatei. Etot indeks pokazyvaet chislo statei, kotorye pozvolyayut nabrat' citiruemost' g2. Esli est' uchenyi, u kotorogo est' odna stat'ya s citiruemost'yu 10000, i 99 statei s nulevoi, ego indeks g budet raven 100, t.e. budet ochen' vysokim. Ego takzhe mozhno nabrat', naprimer, imeya 100 statei, kazhdaya iz kotoryh imeet citiruemost' 100. Esli raspredelenie statei po citiruemosti dostatochno gladkoe, to dva indeksa (h i g) budut dostatochno blizki drug k drugu (skazhem, po dannym NASA ADS u menya h=11, g=15 pri polnoi citiruemosti chut' za 300 i samoi citiruemoi rabote s rezul'tatom 32, vse eto s uchetom samocitiruemosti). V dannoi stat'e avtor rassmatrivaet, kak uchet samocitirovaniya vliyaet na indeks g. Vliyanie sil'nee, chem na hirshevskii indeks (eto yasno, t.k. v sluchae h-indeksa samocitirovanie vliyaet tol'ko vblizi kriticheskogo znacheniya, a dlya g-indeksa vliyanie vazhno "vsyu dorogu", t.k. indeks integral'nyi). Avtor polagaet, chto eto pokazyvaet preimushestvo g-indeksa. Eto tak, no tol'ko posle vychisheniya samocitirovaniya. Mne kazhetsya, chto verno i utverzhdenie o tom, chto nevychishennyi h-indeks luchshe nevychishennogo g-indeksa.
Obsudit' v ZhZh
sergepolar.
|
Publikacii s klyuchevymi slovami:
astro-ph - elektronnye preprinty
Publikacii so slovami: astro-ph - elektronnye preprinty | |
Sm. takzhe:
Vse publikacii na tu zhe temu >> |