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The R.A.P.Project "Prosto o slozhnom" "Astro-ph za 2005 g." Nemnogo statistiki Predydushii vypusk (N129) Slovar' astroterminov Spisok missii i teleskopov Obzory UFN Stat'i SOZh ANKa Dnya 03.03.2006. S chem mozhno pereputat' sverhnovuyu? 01.03.2006. Neulovimyi ostatok sverhnovoi? 17.02.2006. Krutyatsya diski 15.02.2006. Inye temnye galaktiki 08.02.2006. Massivnoe skoplenie krasnyh sverhgigantov Soderzhanie i bystryi perehod k razdelam obzora Stat'i nedeli "Luchshie iz luchshih" astro-ph/0603025 Sverhnovaya 2002kg tipa IIn: Vspyshka yarkoi goluboi peremennoi v NGC 2403 astro-ph/0603089 Gigantskie impul'sy - osnovnoi komponent radioizlucheniya pul'sara v Krabe astro-ph/0603154 Obzory neba i glubokie prokoly na nazemnyh i kosmicheskih teleskopah Otdel'nye stat'i Opredelenie obiliya elementov na Solnce po dannym gelioseismologii Opredelenie orbity planety vokrug zvezdy HD 45350 s vysokoi metallichnost'yu Obnaruzhenie gamma-luchei ochen' vysokoi energii ot galakticheskogo ridzha Sverhnovaya 2002kg tipa IIn: Vspyshka yarkoi goluboi peremennoi v NGC 2403 Blizkie ul'tramoshnye infrakrasnye galaktiki i kvazary Ul'tramoshnye infrakrasnye galaktiki Gigantskie impul'sy - osnovnoi komponent radioizlucheniya pul'sara v Krabe Novye ob'ekty tipa Gamma Kassiopei: rentgenovskie i opticheskie nablyudeniya SAO49725 i HD161103 O vliyanii kosmologicheskogo rasshireniya na dinamiku solnechnoi sistemy Nablyudaemye planetarnye tumannosti kak ostatki vzaimodeistvuyushih dvoinyh sistem Nestacionarnaya bessilovaya magnitosfera pul'sara: osesimmetrichnye i naklonnye rotatory Fizika kosmologicheskoi reionizacii Obzory neba i glubokie prokoly na nazemnyh i kosmicheskih teleskopah Rasshiryaetsya li prostranstvo vo fridmanovskih modelyah vselennoi? Shest' pikov v raspredelenii 46 400 kvazarov iz obzora SDSS po krasnym smesheniyam soglasuyutsya s predpochtitel'nymi krasnymi smesheniyami, predskazannymi model'yu umen'shayushegosya sobstvennogo krasnogo smesheniya Akkrecionno-diffuzionnyi scenarii dlya metallov na holodnyh belyh karlikah Prigodnost' dlya zhizni izvestnyh ekzoplanet po dannym o svoistvah zvezd Zvezdoobrazovanie v hozyaiskih galaktikah kvazarov HD 98618: zvezda, ochen' pohozhaya na nashe solnce Iz razdela physics K luchshemu spisku superzvezd citirovaniya: kompilyaciya mezhdisciplinarnogo spiska issledovatelei s vysokim citirovaniem Bruno Pontekorvo: mister Neitrino Dinamicheskoe trenie v zvezdnyh sistemah: vvedenie 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. Obsudit' na forume Scientific.RU Obsudit' na forume Zvezdocheta Avtor proekta Sergei Popov Diskussii po stat'yam Arhiva PhysComments CosmoCoffee Postav'te u sebya nashu knopku! Proekt razmeshen na saitah: Smotri takzhe diskussii i blogi: Vy mozhet takzhe razmestit' na svoem saite nashu lentu obzorov Novostnye lenty Novosti astronomii ot PRAO Novosti kosmonavtiki Novosti ot UFN Astronomer.Ru Informnauka Researcher@ Elementy.Ru Grani.Ru Perst Podpiska na rassylku obzorov na Subscribe.Ru Druzhestvennye rassylki: "Astronomiya segodnya" "Astronomiya dlya shkol'nikov" "Okno vo Vselennuyu" Spisok astrorassylok

Obzory preprintov astro-ph Vypusk N130 astro-ph za 01 - 13 marta 2006 goda: izbrannye stat'i Referaty otdel'nyh statei astro-ph/0603001 Opredelenie obiliya elementov na Solnce po dannym gelioseismologii (Determining solar abundances using helioseismology) Authors: H.M. Antia, Sarbani Basu Comments: 20 pages, To appear in ApJ Vazhnaya rabota. Delo v tom, chto v poslednie gody poyavilis' spektroskopicheskie dannye, analiz kotoryi privel uchenyh k vyvodu o tom, chto ocenku soderzhaniya nekotoryh tyazhelyh elementov na Solnce nuzhno umen'shit' po sravneniyu s prinyatym znacheniem. Naibolee ser'eznaya popravka byla sdelana dlya kisloroda. Ocenku ego soderzhaniya predlagalos' umen'shit' v poltora raza (ne mogu ne vspomnit' slova Dzhona Bakala v ego knige "Neitrinnaya astrofizika" o tom, chto udivlyat'sya nado ne tomu, kak ploho astronomy znayut model' Solnca, a tomu, kak mnogo oni znayut, nesmotrya na to, chto imeyut delo s neprozrachnym ob'ektom, s kotorym nel'zya provodit' eksperimenty). Obshaya ocenka soderzhaniya tyazhelyh elementov v itoge dolzhna umen'shit'sya v 1.4 raza. NO! No, eto spektroskopicheskie dannye. Est' i drugie. V pervuyu ochered', eto dannye po gelioseismologii. Tak vot, dva raznyh podhoda dayut raznye ocenki. Gelioseismologiya privodit k rezul'tatam, kotorye vyshe spektroskopicheskih. V etoi rabote avtory provodyat novyi analiz dannyh gelioseismologicheskih issledovanii. Novaya ocenka v predelah oshibok sovpadaet so standartnym znacheniem. T.e., vrode by, pereocenka soderzhaniya tyazhelyh elementov v Solnce ne nuzhna. astro-ph/0603007 Opredelenie orbity planety vokrug zvezdy HD 45350 s vysokoi metallichnost'yu (Determination Of The Orbit Of The Planetary Companion To The Metal Rich Star HD 45350) Authors: Michael Endl, et al. Comments: 9 pages preprint, 4 figures, accepted in AJ Kogda u etoi zvezdy otkryli planetu, to zapodozrili, chto orbita sil'no vytyanutaya (t.e. imeet bol'shoi ekscentrisitet). No dannyh ne hvatalo. Teper' hvataet. Ekscentrisitet okazalsya raven 0.76. Eto ochen' mnogo. Sama planeta vdvoe massivnee Yupitera. Rasstoyanie do zvezdy, estestvenno, sil'no menyaetsya, no bol'shaya poluos' sostavlyaet primerno 2 astronomicheskie edinicy. Orbital'nyi period raven pochti 1000 dnei. astro-ph/0603021 Obnaruzhenie gamma-luchei ochen' vysokoi energii ot galakticheskogo ridzha (Discovery of Very-High-Energy Gamma-Rays from the Galactic Centre Ridge) Authors: The H.E.S.S. Collaboration: F. A. Aharonian, et al Comments: 8 pages, 3 figures, published in Nature Perevod slova "ridge" v kachestve astronomicheskogo termina eshe ne ustoyalsya. Poyasnyu, chto eto oblast' rentgenovskogo izlucheniya v central'noi chasti Galaktiki i vdol' ee ploskosti. Proishozhdenie etogo izlucheniya do konca ne vyyasneno (nekotorye novosti po etoi teme mozhno prochest' zdes' i zdes'). S pomosh'yu ustanovki H.E.S.S., o kotoroi ya neodnokratno rasskazyval, ot ridzha zaregistrirovano gamma-izluchenie ochen' vysokoi energii (bolee 100 GeV). Polozhenie istochnika korreliruet s gigantskimi molekulyarnymi oblakami v central'nyh 200 pk Mlechnogo Puti. Avtory polagayut, chto ves' potok gamma-luchei mozhno ob'yasnit' odnim dostatochno molodym (10 000 let) ostatkom sverhnovoi. astro-ph/0603025 Sverhnovaya 2002kg tipa IIn: Vspyshka yarkoi goluboi peremennoi v NGC 2403 (The Type IIn Supernova 2002kg: The Outburst of a Luminous Blue Variable Star in NGC 2403) Authors: Schuyler D. Van Dyk et al. Comments: 22 pages, 15 figures, submitted to PASP S chem mozhno pereputat' vzryv sverhnovoi? Avtory polagayut, chto neobychnaya sverhnovaya, nablyudavshayasya v 2002 godu, est' ni chto inoe, kak vspyshka yarkoi goluboi peremennoi ( Luminous Blue Variable, nekotorye kartinki, svyazannye s etimi massivnymi zvezdami, mozhno posmotret' zdes'). Takie sobytiya uzhe nablyudalis'. Naprimer, izvestny moshneishie vspyshki Eta Kilya. Avtory polagayut, chto burnaya zhizn' massivnyh predsverhnovyh soprovozhdaetsya bol'shim kolichestvom takih vspyshek, i chto mnogie sobytiya, ranee klassificirovannye kak sverhnovye, na samom dele yavlyayutsya rezul'tatom ne smerti, a agonii massivnyh zvezd. Eshe odna stat'ya, posvyashennaya toi zhe tematike, poyavilas' dnem pozzhe: astro-ph/0603056. miniobzor astro-ph/0603028 Blizkie ul'tramoshnye infrakrasnye galaktiki i kvazary (Local Ultraluminous Infrared Galaxies and Quasars) Authors: Sylvain Veilleux Comments: Invited review, 9 pages. Proceedings of Extreme Starburst: Near and Far, a meeting held in Lijiang, China Obsuzhdayutsya ul'tramoshnye IK galaktiki i kvazary, ih evolyuciya i vozmozhnaya svyaz'. Ul'tramoshnye IK galaktiki voznikayut v rezul'tate sliyanii, prichem sliyanii galaktik s prakticheski ravnymi massami. Eto ellipticheskie galaktiki promezhutochnoi massy (zvezdnaya massa poryadka 1011 mass solnca) v processe formirovaniya. Pokazano, chto kompleks dannyh govorit o tom, chto mnogie iz nih zatem prevrashayutsya v kvazary. Ocenka mass chernyh dyr v ul'tramoshnyh IK galaktikah govorit o znacheniyah poryadka 107-108 solnechnyh mass. Prevrashenie ul'tramoshnoi IK galaktiki v kvazar mozhet byt' svyazana s moshnym vetrom (potok neitral'nogo veshestva do 1000 solnechnyh mass v god v techenie millionov let). Odnako eto ne znachit, chto vse kvazary proizoshli iz nih (naprimer, galaktiki kvazarov nevysokoi svetimosti ne pokazyvayut nikakih sledov nedavnih sliyanii), ili chto vse ul'tramoshnye IK galaktiki yavlyayutsya predshestvennikami kvazarov. Detali - v obzore. Bolee podrobnyi obzor ul'tramoshnyh IK galaktik sm. v sleduyushei stat'e. obzor astro-ph/0603031 Ul'tramoshnye infrakrasnye galaktiki (Ultraluminous Infrared Galaxies) Authors: Carol Lonsdale, Duncan Farrah, Harding Smith Comments: Review article, published in "Astrophysics Update 2 - topical and timely reviews on astronomy and astrophysics". Ed. John W. Mason. Springer/Praxis books. ISBN: 3-540-30312-X. 53 pages, 5 figures. Higher quality figures available on request Zdes' uzhe ves'ma podrobno razbirayutsya svoistva ul'tramoshnyh IK galaktik i istoriya ih issledovanii. astro-ph/0603089 Gigantskie impul'sy - osnovnoi komponent radioizlucheniya pul'sara v Krabe (Giant Pulses -- the Main Component of the Radio Emission of the Crab Pulsar) Authors: M.V. Popov et al. Comments: 13 pages, 6 figures (originally published in Russian in Astronomicheskii Zhurnal, 2006, vol. 83, No. 1, pp. 62-69) translated by Denise Gabuzda; Journal-ref: Astronomy Reports, 2006, vol. 50, No. 1, pp. 55-61 Ya, sobstvenno, slyshal doklad po etoi rabote na seminare Gurevicha v FIANe. Ochen' interesnaya rabota (i ochen' horoshii doklad). Tak vot, sut' v tom, chto to, chto my seichas nazyvaem kak "obychnye" impul'sy pul'sara v Krabe, sut' gigantskie impul'sy. A v samom dele "obychnye" impul'sy u etogo pul'sara nablyudayutsya kak t.n. prekursor. Fraza vyshe bezuslovno maloponyatnaya, poetomu s udovol'stviem raz'yasnyu. U radiopul'sarov nablyudayut razlichnye tipy impul'sov. Po vsei vidimosti, s nimi svyazany raznye mehanizmy izlucheniya. Dlya nas seichas budut vazhny "obychnye" i "gigantskie" impul'sy. Obychnost', kak obychno, sootvetstvuet vysokoi chastote vstrechaemosti. Gigantizm, ochevidno, govorit o tom, chto etot tip impul'sov byl otkryt blagodarya nablyudeniyu ochen' moshnyh sobytii. Tshatel'nyi analiz pul'sara v Krabe pokazal, chto vo-pervyh, gigantskie impul'sy poyavlyayutsya tol'ko na teh fazah, na kotoryh vidno bol'shinstvo impul'sov. Vo-vtoryh, raspredelenie impul'sov po energii edino dlya vseh impul'sov na sootvetstvuyushih fazah. Eto pozvolyaet skazat', chto vse impul'sy na etih fazah sleduet otnosit' k gigantskim nevziraya na ih moshnost'. A gde zhe normal'nye impul'sy? Oni tozhe est', no na drugih fazah. U pul'sara v Krabe est' t.n. prekursor. Eto impul's pered osnovnym pul'som. Po vsei vidimosti, imenno prekursor i sostoit iz obychnyh impul'sov. T.o., gigantskie impul'sy ne yavlyayutsya kakim-to redkim sobytiem. Mehanizm, otvetstvennyi za nih, vovsyu rabotaet (po-krainei mere u pul'sara v Krabe). Specialisty po pul'saram ochen' pozitivno ocenivayut etot rezul'tat. Vozmozhno, chto on pozvolit sushestvenno prodvinut'sya v ponimanii togo, kak svetyat radiopul'sary. astro-ph/0603098 Novye ob'ekty tipa Gamma Kassiopei: rentgenovskie i opticheskie nablyudeniya SAO49725 i HD161103 (New Gamma Cas-like objects: X-ray and optical observations of SAO49725 and HD161103) Authors: Raimundo Lopes de Oliveira et al. Comments: 14 pages, 9 figs, accepted for publication in A&A Gamma Kassiopei - izvestneishaya Ve-zvezda. Ona takzhe znamenita izbytkom rentgenovskogo izlucheniya (izbytkom po sravneniyu s obychnoi odinochnoi zvezdoi etogo klassa). Prichiny vozniknoveniya "lishnih rentgen" ne yasny. Osnovnyh gipotez dve: ili eto svyazano s vzaimodeistviem potokov plazmy (naprimer, zvezdnogo vetra i okolozvezdnogo diska), ili zhe est' kompaktnyi sputnik, skoree vsego belyi karlik. V etoi stat'e avtory rasskazyvayut ob obnaruzhenii eshe dvuh zvezd, svoistva kotoryh analogichny svoistvam Gamma Kassiopei. Po vsei vidimosti, est' celyi klass takih ob'ektov. Esli eto dvoinye sistemy, to kompan'onami Ve-zvezd dolzhny byt' belye karliki. V budushem, takie sistemy dolzhny prevrashat'sya v interesnye pary staryi belyi karlik + molodoi radiopul'sar. Pohozhe, chto takie primery uzhe naideny (ya rasskazyval o nih v obzorah). obzor gr-qc/0602098 O vliyanii kosmologicheskogo rasshireniya na dinamiku solnechnoi sistemy (On the influence of the global cosmological expansion on the local dynamics in the Solar System) Authors: Matteo Carrera, Domenico Giulini Comments: 37 pages, 2 figures Rassmatrivaetsya vopros o tom, kak mozhet kosmologicheskoe rasshirenie vliyat' na dinamiku ob'ektov solnechnoi sisteme. Razumeetsya, effekt, dazhe esli on sushestvuet, ochen' mal. I, razumeetsya, nikakih nablyudenii v etom smysle net. Tem ne menee, stat'ya interesnaya. Mne, kak nekosmologu, zatrudnitel'no dat' kakie-to bolee detal'nye kommentarii. Hotelos' by uslyshat' ih ot sootvetstvuyushih specialistov. astro-ph/0603113 Nablyudaemye planetarnye tumannosti kak ostatki vzaimodeistvuyushih dvoinyh sistem (Observed Planetary Nebulae as Descendants of Interacting Binary Systems) Authors: Noam Soker Comments: Submitted To ApJ Lett, 4 pages Noam Soker davno i posledovatel'no otstaivaet tochku zreniya o svyazi planetarnyh tumannostei s dvoinymi sistemami. V bolee rannih rabotah obychno obsuzhdalas' problema bipolyarnyh tumannostei. Zdes' zhe rech' idet uzhe obo vseh nablyudaemyh. Avtor ishodit iz dannyh, kotorye govoryat o tom, chto temp rozhdeniya planetarnyh tumannostei vtroe men'she tempa rozhdeniya belyh karlikov. T.e. v 2/3 sluchaev, kogda poyavlyaetsya belyi karlik, my ne vidim tumannosti. Esli zvezda odinochnaya, polagaet Soker, to tumannost' budet slishkom slaboi, chtoby ee uvidet'. Vse eti neulovimye tumannosti dolzhny byt' prakticheski sfericheski simmetrichnymi, t.k. asimmetriya (nablyudayushayasya v toi ili inoi stepeni pochti u vseh izvestnyh planetarnyh tumannostei, a tochnee v 97 procentah sluchaev), po mneniyu Sokera, svyazana imenno s vzaimodeistviem s kompan'onom. Otmechu, chto vse eto poka gipotezy. Tak, naprimer, mozhet byt' velika rol' magnitnyh polei zvezdy v formirovanii bipolyarnoi tumannosti. Osnovnym predskazaniem etoi raboty yavlyaetsya vozmozhnost' obnaruzheniya bol'shogo kolichestva slabyh tumannostei, kotorye vse budut simmetrichnymi. Pozhivem - uvidim. astro-ph/0603147 Nestacionarnaya bessilovaya magnitosfera pul'sara: osesimmetrichnye i naklonnye rotatory (Time-dependent force-free pulsar magnetospheres: axisymmetric and oblique rotators) Authors: Anatoly Spitkovsky Comments: Submitted to ApJ Letters Nesmotrya na to, chto radiopul'sary izvestny uzhe pochti 40 let, mehanizm ih izlucheniya ostaetsya zagadkoi. V poslednie godu novoe pokolenie uchenyh predprinimaet novuyu ataku na dannuyu problemu, ispol'zuya, v osnovnom, chislennyi podhod. Odna iz takih popytok predstavlena v dannoi stat'e. Drugoi variant izlozheniya toi zhe raboty mozhno naiti v stat'e astro-ph/0603212. Eto 6-tistranichnye trudy konferencii (gde ya, kstati, s Anatoliem i poznakomilsya). Vozmozhno, chto komu-to kratkii variant ponravitsya bol'she. obzor astro-ph/0603149 Fizika kosmologicheskoi reionizacii (Physics of Cosmic Reionization) Authors: T. Roy Choudhury, A. Ferrara Comments: Invited review (to be published by RSP), edited by R. Fabbri. 40 pages V poslednie gody epoha reionizacii privlekla ogromnoe vnimanie uchenyh. Svyazano eto, razumeetsya, s poyavleniem novyh nablyudatel'nyh dannyh. V obzore privoditsya svodka togo, chto my znaem ob epohe reionizacii, i togo, kak my pytaemsya vse eto samim sebe ob'yasnit'. obzor astro-ph/0603154 Obzory neba i glubokie prokoly na nazemnyh i kosmicheskih teleskopah (Sky surveys and deep fields of ground-based and space telescopes) Authors: V.P.Reshetnikov Comments: 22 pages, 18 figures; Physics-Uspekhi, 48 (11), 1109-1127, 2005 Privoditsya svodka dannyh, poluchennyh v hode glubokih obzorov. Ochen' rekomenduyu! Takzhe mozhno skachat' stat'yu na russkom na saite UFN. metodologiya astro-ph/0603162 Rasshiryaetsya li prostranstvo vo fridmanovskih modelyah vselennoi? (Is space expanding in the Friedmann universe models?) Authors: Oyvind Gron, Oystein Elgaroy Comments: 7 pages, 3 figures, submitted to Am. J. Phys Ne uveren, chto takie stat'i stoit pisat'. S odnoi storony, avtory gramotno rassmatrivayut vazhnuyu vesh': kak interpretirovat' nablyudaemoe krasnoe smeshenie dalekih galaktik. Avtory pokazyvayut, chto nel'zya ispol'zovat' odin effekt Doplera. Vse eto horosho. V principe, eto i horosho izvestno. Drugoe delo, chto periodicheski poyavlyayutsya raboty, gde vse-taki pytayutsya vse ob'yasnit' odnim Doplerom.... S drugoi storony, avtory zachem-to akcentiruyut to, chto vo vtorom poryadke kosmologicheskoe krasnoe smeshenie mozhno predstavit' kak summu dopler-effekta i gravitacionnogo krasnogo smesheniya. Na moi vzglyad (imenno, na moi vzglyad), eto ne tol'ko bespoleznoe, no i, v nekotorom smysle, vrednoe utverzhdenie :) Poyasnyu. Ni k kakim uprosheniyam raschetov eto ne privodit. A vot zaputat' mozhet, t.k. efekt doplera tut voobshe ni pri chem. Po suti dela ni pri chem. Kstati, ravno kak i gravitacionnoe krasnoe smeshenie. Kosmologicheskii effekt - eto sovershenno otdel'noe yavlenie. astro-ph/0603169 Shest' pikov v raspredelenii 46 400 kvazarov iz obzora SDSS po krasnym smesheniyam soglasuyutsya s predpochtitel'nymi krasnymi smesheniyami, predskazannymi model'yu umen'shayushegosya sobstvennogo krasnogo smesheniya (Six Peaks Visible in the Redshift Distribution of 46,400 SDSS Quasars Agree with the Preferred Redshifts Predicted by the Decreasing Intrinsic Redshift Model) Authors: M.B. Bell, D. McDiarmid Comments: 12 pages, 12 figure, accepted for publication in the Astrophysical Journal Po dannym SDSS o 46 400 kvazarov s izvestnymi krasnymi smesheniyami pokazano, chto v raspredelenii kvazarov est' nekotoraya periodichnost'. Otmechu, chto analogichnye rezul'taty po sovsem drugoi vyborke davali i drugie gruppy, naprimer, gruppa iz FTI im. Ioffe, na ch'i rezul'taty avtory pochemu-to ne sylayutsya. Obnaruzheno shest' pikov v raspredelenii kvazarov po krasnym smesheniyam. Prichem, piki imeyut vyrazhennuyu periodichnost'. astro-ph/0603185 Akkrecionno-diffuzionnyi scenarii dlya metallov na holodnyh belyh karlikah (The accretion-diffusion scenario for metals in cool white dwarfs) Authors: D. Koester, D. Wilken Comments: 9 pages, To be published in A&A Akkreciya na odinochnye kompaktnye ob'ekty mozhet ispol'zovat'sya kak tester mezhzvezdnoi sredy. Eto vazhno. K sozhaleniyu, odinochnyh akkreciruyushih neitronnyh zvezd poka ne otkryto. A vot belye karliki - est'. Avtory rassmatrivayut tri s lishnim dyuzhiny holodnyh (holodnee 25 000K) belyh karlikov. Dlya nih effekty akkrecii mezhzvezdnogo veshestva uzhe vazhny. Sootvetstvenno, mozhno ocenit' temp akkrecii. A znachit, mozhno ponyat' svoistva mezhzvezdnoi sredy v neposredstvennoi blizosti ot belyh karlikov. V chastnosti, okazyvaetsya, chto ochen' vazhny malen'kie (poryadka parseka) oblachka teplovogo chastichno ionizovannogo gaza. astro-ph/0603200 Prigodnost' dlya zhizni izvestnyh ekzoplanet po dannym o svoistvah zvezd (Habitability of known exoplanetary systems based on measured stellar properties) Authors: Barrie W Jones, P Nick Sleep, David R Underwood Comments: 21 pages Avtory berut dannye po izvestnym zvezdam s planetami, chtoby ocenit' svoistva t.n. zon obitaniya, t.e. zon, v kotoryh byla by vozmozhna zhizn' tipa zemnoi. Provoditsya uchet togo, chto izvestnye planety-giganty mogli by vozmushat' orbitu zemnopodobnyh planet. Krome togo, uchityvaetsya evolyuciya zvezd. Stat'ya budet interesna tem, kto interesuetsya voprosami vozmozhnosti sushestvovaniya zhizni vo Vselennoi. miniobzor astro-ph/0603218 Zvezdoobrazovanie v hozyaiskih galaktikah kvazarov (Star Formation in QSO Host Galaxies) Authors: Gabriela Canalizo, Alan Stockton, Michael S. Brotherton, Mark Lacy Comments: 8 pages, 5 figures, invited review for "QSO Host Galaxies: Evolution and Environment", held at the Lorentz Center, Universiteit Leiden, August, 2005 Izvestno, chto u galaktik, soderzhashih kvazary, zachastuyu nablyudayut povyshennyi temp zvezdoobrazovaniya ili sledy nedavnei vspyshki zvezdoobrazovaniya. Vsegda li eto tak? Kak aktivnost' kvazara svyazana s tempom formirovaniya zvezd? Obo vsem etom rasskazyvaetsya v obzore. Rezyume takovo: kvazary, vidimo, chashe vsego poyavlyayutsya v galaktikah, kotorye nedavno ispytali epizody sliyaniya. A takie yavleniya obyazatel'no soprovozhdayutsya burnym zvezdoobrazovaniem. astro-ph/0603219 HD 98618: zvezda, ochen' pohozhaya na nashe solnce (HD 98618: A Star Closely Resembling our Sun) Authors: Jorge Melendez et al. Comments: ApJ letters, in press Ishut, no tak i ne mogut naiti.... blizneca Solnca. Dostatochno vazhno iskat' i izuchat' zvezdy, kak mozhno bolee pohozhie na nashe Solnce. Seichas blizhaishim dvoinikom schitaetsya zvezda 18 skorpiona (ee opoznali kak prakticheski polnuyu kopiyu Solnca okolo 10 let nazad). Tem ne menee, poiski dvoinikov prodolzhayutsya. Avtory izuchili detal'nye spektry 16 solncepodobnyh zvezd. Rezul'tatom stalo vyyavlenie zvezdy HD 98618 v kachestve eshe odnogo "pochti dvoinika". Pochti, potomu chto, kak i v sluchae 18 skorpiona, nekotorye otlichiya vse-taki est'. Razumeetsya, avtory govoryat kakie-to slova o zonah obitaniya i probleme SETI. My budem starat'sya hotya by perechislit' interesnye (dlya shirokoi publiki) stat'i, poyavivshiesya v razdele physics (vklyuchaya cross-listing). math.ST/0603024 K luchshemu spisku superzvezd citirovaniya: kompilyaciya mezhdisciplinarnogo spiska issledovatelei s vysokim citirovaniem (Towards a better list of citation superstars: compiling a multidisciplinary list of highly cited researchers) Authors: Igor Podlubny, Katarina Kassayova Comments: 14 pages, 4 tables Vot i matematiki podtyanulis'. "Navstrechu spisku peredovikov nauchnogo proizvodstva" - tak hochetsya perevesti zaglavie stat'i. Avtory pytayutsya predlozhit' eshe odin podhod, kotoryi, po ih mneniyu, pozvolit sravnivat' uchenyh, rabotayushih v raznyh oblastyah. Stat'ya interesna sobstvenno prilagayushimisya spiskami. physics/0603039 Bruno Pontekorvo: mister Neitrino (Bruno Pontecorvo: mister neutrino) Authors: S.M. Bilenky Comments: 13 pages, A report at the III International Workshop "Neutrino Oscillations in Venice", Venice, February 7-10, 2006 Stat'ya posvyashena Bruno Pontekorvo i ego vkladu v neitrinnuyu fiziku i astrofiziku. physics/0603066 Dinamicheskoe trenie v zvezdnyh sistemah: vvedenie (Dynamical Friction in Stellar Systems: an introduction) Authors: Hector Aceves, Maria Colosimo Comments: 10 pages, 5 figures. Submitted to Am. J. Phys Horoshee opisanie dinamicheskogo treniya v zvezdnyh sistemah. Neponyatno, pochemu avtory polozhili stat'yu v etu chast' Arhiva, a ne v astro-ph. Napomnyu, chto yavlenie dinamicheskogo treniya harakternoi dlya sistem mnogih tel. Skazhem zvezda, dvigayas' sredi drugih zvezd, budet ispytyvat' silu, napravlennuyu protiv dvizheniya. Proishozhdenie sily chisto gravitacionnoe. Svyazano ono s tem, chto sama zvezda sozdaet svoei gravitaciei szadi sebya sgushenie. Pohozhee yavlenie budet voznikat' pri dvizhenii lyuboi tyazheloi chasticy v szhimaemoi srede. Vpervye dannyi fenomen byl rassmotren Chandrasekarom. Polagayu, chto stat'ya budet interesna mnogim. Ee mozhno i polezno razbirat' v kachestve primera na seminarah po mehanike ili dazhe s razumnymi devyatiklassnikami. Vernut'sya k nachalu stranicy

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