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Referaty otdel'nyh statei
Authors: C. C. Popescu, R.J. Tuffs Comments: 10 pages, invited lecture to appear in Proceedings of the lectures given at the Les Houche Winter School "Astronomy in the submillimeter and far infrared domains with the Herschel Space Observatory" Dlya kolichestvennogo opisaniya tempa zvezdoobrazovaniya v spiral'nyh galaktikah, raspredeleniya v nih gaza i zvezd, ih neprozrachnosti dlya izlucheniya trebuetsya soglasovannoe modelirovanie ih spektrov (SED) v bol'shom diapazone dlin voln: ot ul'trafioletovogo i opticheskogo do infrakrasnogo i submillimetrovogo. Klyuchevym momentom takogo modelirovaniya stanovitsya model' pyli (opticheskih svoistv pylevyh chastic i ih raspredeleniya po razmeram), poskol'ku pyl' pogloshaet opticheskoe izluchenie zvezd i pereizluchayut ego v infrakrasnom i submillimetrovom diapazonah. V dannoi lekcii avtory opisyvayut razrabotannuyu imi metodiku modelirovaniya spektrov spiral'nyh galaktik i ee prilozheniya. Bolee podrobnyi obzor opublikovan v rabote Popescu & Tuffs (2005, AIPC 761, 155).
Authors: Jacco Th. van Loon et al. Comments: 24 pages, accepted for publication in MNRAS Omega Centauri (NGC5139) - horosho izvestnoe isklyuchenie iz pravila o tom, chto sharovye skopleniya predstavlyayut soboi himicheski odnorodnye gruppy zvezd pochti odinakovogo vozrasta. V omega Cen vse ne tak: zvezdy razdeleny na dve gruppy s metallichnost'yu [Fe/H]~ -1.8 dex i [Fe/H]~ -0.8 dex, i dlya ob'yasneniya etogo predpolagayut, chto zvezdoobrazovanie v omega Cen proishodilo po krainei mere na protyazhenii 2 mldr let. No voprosy ostayutsya, i potomu nuzhny nablyudeniya. V dannoi rabote predstavlen analiz opticheskih spektrov bolee 1500 zvezd skopleniya. Avtorami izmereny radial'nye skorosti zvezd, ih effektivnye temperatury i metallichnosti.
Authors: M. Schramm et al. Comments: 9 pages, 7 figures, accepted for publication in A&A Issledovanie roditel'skih galaktik kvazarov trebuet osoboi tehniki nablyudenii, poskol'ku vydelit' slaboe protyazhennoe svechenie "galaktiki-podlozhki" na fone yarkogo tochechnogo istochnika ochen' trudno. Privedeny rezul'taty nablyudenii neskol'kih radio tihih, no yarkih v optike kvazarov, nahodyashihsya na krasnyh smesheniyah 2.6 < z < 3.0. Nablyudeniya velis' na VLT v infrakrasnyh fil'trah H i Ks, chto v sisteme otscheta galaktik dlya krasnyh smeshenii z ~ 3 sootvetstvuet opticheskim fil'tram B i V. Bezuslovno, ochen' trudno sdelat' vyvod na osnove odnogo pokazatelya cveta B-V, nablyudeniya vo mnogih fil'trah byly by znachitel'no informativnee. Poskol'ku absolyutnye zvezdnye velichiny roditel'skih galaktik kvazarov M_V ~ -25, a ih pokazatel' cveta B-V~ 0 (v sisteme Vegi), avtorami sdelan predvaritel'nyi vyvod o tom, chto v etih galaktikah proishodit aktivnoe zvezdoobrazovanie, a ocenennaya imi zvezdnaya massa sostavlyaet 1011 M_s.
arxiv:0709.2711
Populyacionnyi sintez v korotkovolnovom diapazone i sposoby
spektrofotometricheskoi diagnostiki evolyucii galaktik (Population
synthesis at short wavelengths and spectrophotometric diagnostic
tools for galaxy evolution)
Authors: A. Buzzoni et al. Comments: 8 pages, Invited contribution to "New quests in stellar astrophysics. II: Ultraviolet properties of evolved stellar populations" (Puerto Vallarta, Mexico, Apr 2007), Pri nablyudeniyah galaktik na bol'shih krasnyh smesheniyah ul'trafioletovaya chast' spektrov smeshaetsya v opticheskii diapazon. Poetomu detali i harakter evolyucii dalekih galaktik v korotkovolnovoi oblasti izucheny namnogo luchshe. Dlya analiza spektrov dalekih galaktik v kachestve obrazcov (galactic templates) ispol'zuyutsya ul'trafioletovye spektry blizkih galaktik, poluchennye so sputnikov. V takom empiricheskom podhode lokal'nye svoistva galaktik prosto ekstrapoliruyutsya na bol'shie krasnye smesheniya. Al'ternativnyi sposob poyavilsya sovsem nedavno. Blagodarya progressu v modelirovanii zvezdnyh atmosfer, byli sozdany biblioteki zvezdnyh spektrov i dlya korotkovolnovoi (<3000 angstrem) oblasti, kotorye teper' mogut byt' ispol'zovany dlya sozdaniya model'nyh galakticheskih spektrov. Var'iruya te ili inye parametry, mozhno budet dobit'sya luchshego sovpadeniya nablyudaemyh i model'nyh spektrov, tochnee opisat' svoistva dalekih galaktik. Avtorami predstavleny pervye rezul'taty takogo modelirovaniya, detal'noe opisanie proekta gotovitsya k publikacii (Bertone et al., 2007).
arxiv:0709.2780
Zvezdnyi sostav roditel'skih galaktik lacertid na malyh krasnyh
smesheniyah po rezul'tatam mnogocvetnoi fotometrii (The stellar content
of low redshift BL Lac host galaxies from multicolour imaging)
Authors: T. Hyvonen et al. Comments: 15 pages, A&A in press Lacertidy (BL Lac) - klass aktivnyh galakticheskih yader (AGN), harakterizuemyi izlucheniem s ploskim spektrom i cil'noi peremennost'yu vo vseh diapazonah. Opticheskie i infrakrasnye issledovaniya mnogih avtorov pokazali, chto roditel'skimi galaktikami blizkih (z < 0.5) lacertid yavlyayutsya yarkie giganskie ellipticheskie galaktiki. Avtory dannoi raboty podtverzhdayut etot vyvod. V stat'e predstavleny rezul'taty mnogocvetnoi fotometrii (U, B, V, R, H) 18 lacertid na krasnyh smesheniyah z < 0.3 Podtverzhdeno, chto roditel'skie galaktiki lacertid v celom golubee obychnyh ellipticheskih galaktik i imeyut bolee shirokii razbros cvetovyh pokazatelei. Oba faktora govoryat o sushestvovanii v lacertidah molodogo zvezdnogo naseleniya, o vzaimosvyazi processov zvezdoobrazovaniya i aktivnosti galakticheskih yader.
Authors: David G. Barnes, Christopher J. Fluke Comments: 18 pages, 7 figures, submitted to New Astronomy. V stat'e opisyvaetsya, kak mozhno, ispol'zuya novuyu versiyu Acrobat Portable Document Format i biblioteku S2PLOT, vklyuchit' v tekst stat'i (razmeetsya, v elektronnuyu versiyu) trehmernuyu grafiku v interaktivnom rezhime (t.e. kartinki mozhno vrashat' i tp.). Krome prochteniya stat'i rekomenduetsya takzhe zaglyanut' na sait.
Authors: Masahiro N. Machida, Kohji Tomisaka, Tomoaki Matsumoto, Shu-ichiro Inutsuka Comments: 45 pages,12 figures, Submitted to ApJ Avtory provodyat trehmernoe chislennoe modelirovanie evolyucii zamagnichennogo molekulyarnogo oblaka s cel'yu vyyasneniya togo, kak obrazuyutsya dvoinye zvezdy. Avtory predskazyvayut, chto u zvezd v ochen' molodyh gruppah dolzhno nablyudat'sya dva pika v raspredelenii po bol'shim poluosyam orbit dvoinyh. Sm. takzhe arxiv:0709.2886 i arxiv:0709.2887, posvyashennye analogichnym issledovaniyam - obrazovanie zvezd. Zdes' avtory detal'no issleduyut rol' magnitnyh polei pri kollapse oblaka. Vyvody otlichayutsya ot poluchennyh v opisannoi vyshe stat'e.
arxiv:0709.2880
Pyl', formiruyushayasya v ostatke sverhnovoi Kassiopeya A, po nablyudeniyam
kosmicheskogo teleskopa Spitzer (Freshly Formed Dust in the Cassiopeia A
Supernova Remnant as Revealed by the Spitzer Space Telescope)
Authors: J. Rho et al. Comments: 28 pages, ApJ Nedavnie otkrytiya bol'shogo kolichestva pyli (108 - 109 mass Solnca) v galaktikah i kvazarah na bol'shih krasnyh smesheniyah govoryat o tom, chto imenno sverhnovye vtorogo tipa SNe II yavlyayutsya effektivnym istochnikom pyli v rannei Vselennoi. Rezul'taty raschetov formirovaniya pyli pri vzryvah sverhnovyh SNe II (Todini, Ferrara, 2001; Nozawa et al 2003) podtverzhdayut etot fakt, predskazyvaya, chto odna SN II mozhet proizvodit' ot 0.1 do 1.0 mass Solnca pyli. Tem ne menee nablyudeniya blizkih ostatkov sverhnovyh do sih por byli bolee chem pessimistichny, davaya verhnii predel pylevoi massy na dva poryadka men'she predskazannogo. Kassiopeya A (Cas A) - molodoi ostatok galakticheskoi sverhnovoi vozrastom 335 let. V stat'e privedeny rezul'taty nablyudenii Cas A s pomosh'yu infrakrasnogo spektrografa na bortu Spitzer na dlinah voln ot 5.5 - 70 mkm. Po ocenkam avtorov, massa pyli v Cas A sostavlyaet ot 0.020 do 0.054 mass Solnca. Eto v desyat' raz men'she znacheniya, predskazannogo teoriei, no zato v desyat' raz bol'she predydushih ocenok 3.5 10-3 mass Solnca i 7.7 10-5 mass solnca. Takoi rezul'tat ne sluchaen. Vo-pervyh, v dannoi rabote infrakrasnyi spektr Cas A analizirovalsya vplot' do 70 mkm, togda kak avtory predydushih rabot ostanavlivalis' na 30-40 mkm. Vo-vtoryh, infrakrasnyi spektrograf (IRS) teleskopa Spitzer imeet bol'shoe razreshenie, i dlya togo, chtoby vosproizvesti v raschetah nablyudaemyi spektr potrebovalos' znachitel'no uslozhnit' model', vklyuchiv v nee pylevye chasticy raznogo himicheskogo sostava. Poskol'ku nablyudeniya velis' tol'ko do 70 mkm, v dannoi rabote ne uchtena holodnaya pyl' Cas A, eto odna iz vozmozhnyh prichin raznoglasiya s teoreticheskim znacheniem. No otvetit' na etot vopros pozvolyat tol'ko budushie infrakrasnye i submillimetrovye nablyudeniya s pomosh'yu teleskopov Herschel, SCUBA-2 i ALMA. Vazhno otmetit', chto kolichestvo pyli, formiruyusheesya v ostatke sverhnovoi, est' funkciya massy i metallichnosti zvezdy. A temp sverhnovyh (kolichestvo sverhnovyh, vzryvayushihsya v edinicu vremeni) zavisit ot nachal'noi funkcii mass zvezd, tempa zvezdoobrazovaniya v galaktike, modelei zvezdnoi evolyucii i drugih prichin. Potomu rezul'tat po Cas A ne mozhet byt' prinyat za srednee znachenie. Real'nost' slozhnee, i dlya ponimaniya processov formirovaniya pyli trebuyutsya dopolnitel'nye nablyudeniya. No to, chto nam uzhe izvestno, pozvolyaet utverzhdat', chto SNe II deistvitel'no yavlyayutsya effektivnym istochnikom pyli.
arxiv:0709.2974
Istechenie ili galakticheskii veter: sud'ba ionizovannogo gaza
v galo karlikovyh galaktik (Outflow or galactic wind: The fate of ionized
gas in the halos of dwarf galaxies)
Authors: J. van Eymeren et al. Comments: 15 pages, A&A in press Nablyudeniya karlikovyh galaktik v emissionnyh liniyah vyyavili mnogochislennye struktury ionizovannogo gaza na rasstoyaniyah do kiloparseka ot oblastei zvezdoobrazovaniya. Eti struktury okaimlyayut bol'shie gruppy massivnyh zvezd, nazyvaemye OB-associaciyami. Vzryvy sverhnovyh i intensivnyi zvezdnyi veter peredayut energiyu massivnyh zvezd okruzhayushei mezhzvezdnoi srede. Obrazuyushiesya vokrug OB-associacii puzyri (superbubble) goryachego gaza, rasshiryayas', vymetayut okruzhayushii gaz. Tonkie plotnye obolochki takih "puzyrei" horosho razlichimy na opticheskih snimkah v emissionnyh liniyah. Karlikovye galaktiki sravnitel'no malomassivny, poetomu voznikaet vopros o dal'neishei sud'be ionizovannogo gaza. Budet li on gravitacionno svyazan s galaktikoi (v literature etot variant izvesten kak outflow - istechenie) ili sumeet preodolet' gravitacionnyi bar'er i navsegda pokinet galaktiku v vide galakticheskogo vetra (galactic wind)? Otvet na etot vopros vazhen dlya ponimaniya himicheskoi evolyucii galaktik i processov obogasheniya mezhgalakticheskoi sredy tyazhelymi elementami. Esli gaz pokidaet galaktiku, zvezdoobrazovanie v nei na kakoe-to vremya prekrashaetsya, a metallichnost' mezhzvezdnoi sredy umen'shaetsya. S tochki zreniya teorii, galakticheskii veter horosho izuchen i aktivno ispol'zuetsya v modelyah dinamicheskoi i himicheskoi evolyucii galaktik, no ubeditel'nye primery takih nablyudenii poka privesti trudno. Interpretaciyu dannyh uslozhnyaet uchet nevidimoi temnoi materii v galo galaktik, raspredelenie i massa kotoroi ne do konca yasny. Chislennoe znachenie skorosti "ubeganiya", dostigaya kotoruyu gaz mozhet pokinut' galaktiku, neodnoznachno, poskol'ku zavisit ot prinyatoi modeli temnoi materii. S cel'yu vyyasnit' svyazan ili net gravitacionno ionizovannyi gaz, nablyudaemyi okolo irregulyarnyh karlikovyh galaktik NGC 2366 and NGC4861, avtorami raboty byli polucheny glubokie snimki galaktik v linii H_alpha. Naidennye mnogochislennye struktury ionizovannogo gaza (razmerom ot soten parsek do kiloparseka v diametre) byli detal'no issledovany s tochki zreniya kinematiki s pomosh'yu dlinnoshelevoi eshele-spektroskopii vysokogo razresheniya na 4-m teleskope Observatorii Kitt Pik. Analiz rezul'tatov pokazal, chto oblaka ionizovannogo gaza pokidayut obe galaktiki so skorostyami ot 20 and 110 km/c. Chtoby vyyasnit', imeet li mesto v dannom sluchae istechenie (outflow) ili galakticheskii veter (galactic wind), eti skorosti nuzhno bylo sravnit' so skorost'yu "ubeganiya", opredelyaemoi model'yu temnoi materii. Provedennoe avtorami sravnenie pokazalo, chto oboih sluchayah gaz gravitacionno svyazan s galaktikami. Po mneniniyu avtorov, dlya nablyudatel'nogo podtverzhdeniya idei galakticheskogo vetra nuzhno obratit'sya k menee massivnym galaktikam s men'shim gravitacionnym potencialom, a takzhe uvelichit' chuvstvitel'nost' nablyudenii, chto pozvolilo by detektirovat' bolee slaboe izluchenie ionizovannogo gaza v galo galaktik.
Authors: Igor Chilingarian Comments: 2 pages, 1 figure, Stellar Populations as Building Blocks of Galaxies, Proceedings of IAU Symposium #241. Edited by A. Vazdekis and R. F. Peletier. Cambridge: Cambridge University Press, 2007, pp.177-178 Sravnivayutsya dva podhoda pri organizacii dostupa k dannym o zvezdnyh populyaciyah v Virtual'noi observatorii. K sozhaleniyu, zametka ochen' korotkaya, poetomu, po suti, prihoditsya dovol'stvovat'sya lish' vyvodami avtora. Vse detali ostayutsya za bortom.
Authors: Edward W. Kolb Comments: 18 pages, Two lectures presented at the International School of Subnuclear Physics, "Searching for the 'totally unexpected' in the LHC era," Erice, Italy 2007 Dostatochno podrobnye, no dostupnye lekcii po kosmologii. Dostoinstvom yavlyaetsya to, to Ed pro vse-vse, chto hot' kak-to mozhet byt' svyazano s issledovaniyami na LHC, postaralsya upomyanut'.
Authors: Jeremy S. Heyl Comments: 5 pages, 4 figures, submitted to MNRAS letters Zabavno, chto belye karliki, kak neitronnye zvezdy i chernye dyry, mogut tozhe poluchat' "tychki". Svyazano eto s nesimmetrichnym sbrosom massy gigantami. Effekt ne ochen' velik, no mozhno postarat'sya ego zametit'. Proshe vsego eto sdelat' v sharovyh skopleniyah. Esli kik est', to belye karliki budut raspredeleny ne tak, kak ih praroditeli. V samom dele, takoi effekt nablyudayut. Avtor obsuzhdaet razlichnye varianty raspredelenii, kotorye mogli by rasskazat' nam bol'she o kikah belyh karlikov.
arxiv:0709.3255
Novaya kalibrovka sootnosheniya period-svetimost' dlya cefeid Galaktiki
v fil'trah ot B do K i sravnenie s analogichnym sootnosheniem dlya cefeid
BMO (A new calibration of Galactic Cepheid Period-Luminosity relations
from B to K bands, and a comparison to LMC PL relations)
Authors: P. Fouque et al. Comments: 12 pages, A&A in press Avtorami byli izucheny 59 cefeid s izvestnymi parallaksami s cel'yu otkalibrovat' sootnoshenie period-svetimost' dlya cefeid Galaktiki i sravnit' ego s analogichnym sootnosheniem dlya cefeid Bol'shogo Magellanova Oblaka (BMO). Nablyudeniya provodilis' v semi fil'trah (B, V, Rc, Ic, J, H, Ks), a rasstoyaniya do cefeid byli nezavisimo izmereny pyat'yu sposobami. Sushestvennyh otlichii mezhdu naklonami v sootnosheniyah period-svetimost' dlya cefeid Galaktiki i BMO v spektral'nom diapazone ot B do K naideno ne bylo. Po-vidimomu, dannoe sootnoshenie imeet universal'nyi naklon i ne zavisit ot metallichnosti galaktiki.
Authors: Katsushi Arisaka et al. Comments: 18 pages, 6 figures Avtory popytalis' opredelit' sostav kosmicheskih luchei sverhvysokih energii po dannym observatorii Ozhe. K sozhaleniyu, priiti k kakomu-to chetkomu vyvodu ne udalos'. Poka sostav luchei v moment ih "vyhoda" iz istochnika s ravnym uspehom mozhno opisat' i yadrami zheleza, i kislorodom, i protonami, i ih smes'yu .... Est' nekotorye ukazaniya na to, chto vse-taki zhelezo podhodit luchshe, no poka eto lsh' ukazaniya.
Authors: G. Maier, et al Comments: 4 pages; contribution to the 30th International Cosmic Ray Conference, Merida, Mexico, July 2007 Prakticheski issyak potok materialov dlya konferencii po kosmicheskim lucham, posvyashennyh rezul'tatam MAGIC (kstati, avtory nakonec-taki sobrali vse eti stat'i po odnu ssylku - stalo udobnee), kak podospela pachka statei po VERITAS.
V pervoi, razumeetsya, kratko opisano sostoyanie eksperimenta i osnovnye
rezul'taty. Nu a dal'she, dlinnoi cheredoi idut raboty, posvyashennye otdel'nym
aspektam.
Authors: Thomas J. Maccarone, Christian Knigge Comments: 20 pages, review article accepted for October edition of Astronomy & Geophysics. A more colorful version of this paper with a few extra figures will appear in A&G. The scientific content is the same in both versions Format stat'i "prostovatyi", zato soderzhanie ochen' i ochen'. Zasluzhivaet prochteniya. Avtory dayut polnyi obzor po nablyudeniyam razlichnyh kompaktnyh ob'ektov v sharovyh skopleniyah. Eto i radionablyudeniya millisekundnyh pul'sarov, i rentgenovskie nablyudeniya razlichnyh istochnikov v dvoinyh sistemah, i koe-chto drugoe. Kak izvestno, sharovye skopleniya - eto dostatochno starye ob'ekty. Poetomu molodyh neitronnyh zvezd tam malo. Kazalos' by, i aktivnyh kompaktnyh ob'ektov tam dolzhno byt' men'she. V deistvitel'nosti vse ne tak prosto. Za schet vzaimodeistvii drug s drugom zvezdy mogut obrazovyvat' pary. V itoge, temp obrazovaniya nekotoryh tipov ob'ektov v sharovyh skopleniyah raz v sto vyshe, chem v diske Galaktiki. Poetmou nekotorye sharoviki pryamo-taki napichkany inteersnymi sistemami. Pro vse eto mozhno prochest' v obzore (zaodno otmechu, chto zhurnal Astronomy & Geophysics voobshe otlichaetsya interesnymi obzorami).
Authors: Roeland P. van der Marel, Puragra Guhathakurta Comments: ApJ submitted, 13 pages, including 3 figures Skorost' galaktik (naprimer, Tumannosti Andromedy) legko opredelit', esli rech' idet o sostavlyayushei vdol' lucha zreniya. Dostatochno trudno opredelit' poperechnuyu skorost'. Avtory pytayutsya razlichnymi metodami sdelat' takuyu ocenku dlya M31 i posmotret', chto iz etogo sleduet. Sleduet mnogo interesnogo. Naprimer, u nih poluchaetsya, chto M33 zhestko svyazana s Tumannost'yu Andromedy. A znachit, v budushem krasivuyu spiral' v Treugol'nike budut sil'no korezhit' prilivnye sily.
Authors: Georges Meynet Comments: 8 pages, 2 figures, be published in "European Physical Journal: Special Topics" Nebol'shoi obzor pro evolyuciyu zvezd s tochki zreniya opisaniya yadernyh reakcii v iz nedrah.
Authors: Alain Omont Comments: 96 pages, 11 figures, Rep. Prog. Phys. 70 (2007) 1099-1176 Podrobnyi obzor po "molekulam v drugih galaktikah". V drugih galaktikah my mozhem nablyudat' mezhzvezdnuyu sredu pri ochen' raznyh usloviyah. Razumeetsya, etot material gorazdo bogache togo, kotoryi my nahodim v nashei Galaktike. Krome togo, v blizhaishem budushem, blagodarya vvodu v stroi novyh insturmentov, kolichestvo i kachestvo nablyudenii v etoi obalsti eshe vozrastut. Ob etom takzhe idet rech' v obzore.
Authors: Norbert Straumann Comments: 18 pages, 5 figures,invited lecture given at the III Mexican Meeting on Mathematical and Experimental Physics, September 10-14, 2007 at El Colegio Nacional; to be published by the American Institute of Physics Eto v samom dele lekciya, a ne obzor. T.k., stat'ya soderzhit ne perechen' rezul'tatov, a detal'noe izlozhenie. Razumeetsya, tekst poluchaetsya dostatochno tehnicheskim. Budet polezen tem, kto v samom dele hochet razobrat'sya, kak rabotaet mehanizm Blendforda-Znaeka i tp. Trebuetsya ser'eznyi background.
Authors: Neal Jackson Comments: Living Reviews in Relativity 10(2007)4 Bol'shoi horoshii obzor. Vsem rekomenduyu hotya by posmotret'. Znat', kak vse eto opredelyaetsya - ochen' vazhno.
Obsudit' v ZhZh-soobshestve
ru_astroph
Authors: I. Amore, for the NEMO Collaboration Comments: Proceeding of ISCRA 2006, Erice 20-27, JMPA, Vol. 22, No. 21 (2007) 3509-3520 Opisano, kak dvizhetsya delo s rabotami po sozdaniyu neitrinnogo detektora NEMO.
Authors: Enrico Costa et al. Comments: 10 pages, 9 figures, Proceedings of SPIE Optics + Photonics 2007 Conference - San Diego, vol. 6686-32 Subjects: Astrophysics (astro-ph) HXXT - planiruemyi kitaiskii rentgenovskii sputnik. V stat'e opisany raboty po sozdaniyu polyarizacionnogo detektora. Poka, k sozhaleniyu, vse popytki zapustit' chto-to s horoshim detektorom polyarizacii v rentgenovskom diapazone okanchivalis' neudachei. A sdelat' eto nado! Dannye po polyarizacii dadut ochen' vazhnuyu informaciyu o processah, proishodyashih v rentgenovskih istochnikah. Krome togo, tehnicheski ochen' trudno sozdat' horoshii polyarimetr dlya stol' zhestkogo diapazona.
Authors: Olaf Wucknitz Comments: 6 pages, many colour figures. To appear in the proceedings of the 8th EVN symposium held in Torun, Poland, September 2006 Obzor posvyashen nablyudeniyam linzirovaniya v radiodiapazone pri ispol'zovanii interferometrov so sverhdlinnoi bazoi.
Authors: S. Carrigan et al., for the H.E.S.S. Collaboration Comments: 4 pages, Proceedings of the 30th ICRC, Merida, Mexico Interesnaya rabota (a zaodno ob'edinyu tut raznye stat'i H.E.S.S. dlya materialov 30th ICRC). Avtory predstavlyayut rezul'taty sistematicheskogo issledovaniya pul'sarov v TeVnom diapazone. Sdelano eto na osnove obzora vnutrennei Galaktiki na H.E.S.S. V etu oblast' popalo 435 pul'sarov. Avtory pokazyvayut, chto moshnye pul'sary (obychno eto molodye ob'ety, u nih temp vydeleniya vrashatel'noi energii ochen' velik) ochen' chasto nablyudayutsya kak istochniki zhestkogo gamma. Iz 435 H.E.S.S. uvidel 30. Eto mnogo dazhe s uchetom togo, chto avtory ne isklyuchayut, chto chast' iz etih 30 mozhet okazat'sya sluchainym sovpadeniem. Vozmozhno, eto samaya mnogochislennaya populyaciya TeVnyh istochnikov v Galaktike.
O drugih rabotah po H.E.S.S.
V arxiv:0709.4103
rasskazyvaetsya o nablyudeniyah ostatka sverhnovoi RCW 86.
V arxiv:0709.4103
opisano otkrytie kandidata v pul'sarnye tumannosti - istochnika HESS
J1718-385.
Dlya nekotoryh ob'ektov H.E.S.S. daet tol'ko verhnie predely. Svodka takovyh
dlya aktivnyh yader galaktik dana v stat'e arxiv:0709.4598.
A vot galaktika PG 1553+113 byla obnaruzheno, chto i opisano v arxiv:0709.4602.
Vspyshka aktivnogo yadra PKS 2155-304 opisana v rabote arxiv:0709.4608.
Avtory utverzhdayut, chto vspyshka dostatochno neobychna.
Nakonec, stat'ya arxiv:0709.4621 posvyashena
nablyudeniyam ostatka sverhnovoi RX J0852.0-4622.
Authors: Paul P. Plucinsky et al. Comments: accepted for publication ApJS Ya dumayu, chto po etomu povodu budut press-relizy, ibo krasivo. M33, kak izvestno, sama po sebe galaktika simpatichnaya (eto nebol'shaya, no blizkaya spiral', vidimaya plashmya). I vot ee ochen' podrobno otsnyali Chandroi. Estestvenno, vyyavleno ogromnoe kolichestvo istochnikov (primerno 400). V chastnosti, udalos' nemnogo razobrat'sya v meshanine istochnikov v central'noi oblasti galaktiki.
Authors: M. De Becker Comments: 47 pages, 5 postscript figures, accepted for publication in Astronomy and Astrophysics Review. Astronomy and Astrophysics Review, in press Ya dumayu, chto seichas, kogda AGILE uzhe letaet, a GLAST vot-vot zapustyat, obzor po neteplovomu izlucheniyu massivnyh dvoinyh ochen' umesten (hotya rech' idet ne tol'ko o gamma-izluchenii, no i radio, optike i rentgene). Kak i vse, po suti, obzory dlya A&AR napisano vse ochen' ponyatno (po-krainei mere dlya studentov ne samyh mladshih kursov sootvetstvuyushih special'nostei). Pri etom est' vse srazu: i fizika, i nablyudeniya, i vse vokrug.
Authors: Glen H. Fountain et al. Comments: 33 pages, 13 figures, 4 tables; To appear in a special volume of Space Science Reviews on the New Horizons mission Special'nyi vypusk zhurnala Space Science Reviews posvyashen sputniku New Horizons. Prakticheski vse stat'i vylozheny (ili budut vylozheny) v Arhiv. Zdes' my ob'edinyaem ih, nachinaya so stat'i s opisaniem samogo apparata.
Drugie stat'i.
Obsudit' v ZhZh-soobshestve
ru_astroph
Authors: D. R. Lorimer et al. Comments: 18 pages, 4 figures. Accepted by Science. Published electronically via Science Express on September 27, 2007 Pul'sarnye obzory teper' pozvolyayut iskat' edinichnye radiovspleski ochen' korotkoi dlitel'nosti. Ob etom, skazhem, davno mechtali lyudi, izuchayushie gamma-vspleski (mozhno posmotret' stat'i Lipunova na etu temu, naprimer). Pravda, poka iskt' mozhno tol'ko na ochen' malen'kih ploshadkah, no eto uzhe koe-chto. Analiz arhivnyh dannyh pokazal nalichie ochen' yarkogo (30 Yanskih!) korotkogo (menee 5 millisekund) vspleska. Avtory utverzhdayut, chto vsplesk vnegalakticheskii. Ocenki avtorov pokazyvayut, chto na nebe mozhet proishodit' neskol'ko soten takih vspleskov v den' (znachit, kstati, eto ne gamma-vspleski), tol'ko naiti ih trudno.
Authors: Seth Redfield, Jeffrey L. Linsky Comments: 65 pages, 24 figures; Accepted for publication in ApJ Na osnovanii dannyh po blizkim zvezdam (oni vystumayut v roli testerov, prosvechivayushih mezhzvezdnuyu sredu) predstavlena model' lokal'noi mezhzvezdnoi sredy. Rech' idet o masshtabah neskol'ko desyatkov parsek i men'she. Model' ochen' detal'naya, poetomu za podrobnostyami - v stat'yu.
Authors: V. Petit, G.A. Wade, L. Drissen, T. Montmerle Comments: 5 pages, 4 figures 40 Years of Pulsars conference: Millisecond Pulsars, Magnetars and More. McGill University, Montreal, Canada, August 12-17, 2007. Proishozhdenie magnitnyh polei magnitarov ostaetsya zagadkoi. To li oni generyatsya na stadii protoneitronnoi zvezdy, to li zvezdy-praroditeli sami byli sil'no zamagnicheny, tak chto posle kollapsa i kompaktnye ob'ekty okazalis' s superpolyami. Avtory issleduyut vtoruyu vozmozhnost', pytayas' izmerit' polya massivnyh OV-zvezd. Vyvod avtorov lyubopyten. Oni polagayut, chto vtoraya vozmozhnost' (kollaps sil'no zamagnichennyh zvezd) ne prohodit ne potomu, chto sil'no zamagnichennyh massivnyh zvezd malo, a potomu, chto ih mnogo! Iz vos'mi issledovannyh zvezd tri okazalis' s sil'nymi polyami.
My budem starat'sya hotya by perechislit' interesnye (dlya shirokoi publiki) stat'i, poyavivshiesya v razdele physics (vklyuchaya cross-listing).
Authors: Erasmo Recami Comments: Comments: paper of 21 pages [source-file in Word]. Small parts of it appeared in the Italian newspapers (beginning of 2006) and particularly in the Journal Fisica in Medicina (2006), issue no.3, pp.261-265 Issledovatel' tvorchestva Maiorany prodolzhaet vykladyvat' v Arhiv razlichnye materialy. Na etot raz, eto stat'ya Ettore, kotoraya ne byla opublikovana im pri zhizni. V posledstvii stat'ya taki byla napechatana, i vot teper' ee mozhno uvidet' v svobodnom dostupe.
Authors: Victor M. Yakovenko Comments: 24 pages, 11 figures, 144 citations Chestno govorya, u menya vsya eta ekonofizika vyzyvaet, kak by skazat', smeshannye chuvstva. Tem ne menee, komu-to mozhet pokazat'sya poleznym prosmotret' nekotoryi obzor po etoi teme. Kak vidno, material soprovozhdaetsya bol'shim kolichestvom ssylok.
Authors: M. Zobov, for the DAFNE Team Comments: Invited Talk at VII International Workshop to the Memory of Prof. V.P.Sarantsev "Problems of Charged Particle Beams: Electron-Positron Colliders", to be published in "PHYSICS of PARTICLES and NUCLEI, LETTERS" DAFNE - uspeshnyi eksperiment v oblasti elementarnyh chastic. V nastoyashee vremya planiruetsya apgreid priborov. Eto horoshii moment dlya podvedeniya nekotoryh itogov i zaglyadyvaniya v budushee.
Authors: Max Tegmark Comments: 3 pages, this is the "director's cut" version of the September 15 2007 New Scientist cover story. For references, see the "full strength" version at arXiv:0704.0646 Ochen' interesnaya stat'ya! Avtor "narochno" vybiraet ochen' krainyuyu poziciyu, kotoruyu mozhno opisat' tak: "Vselennaya ne prosto opisyvaetsya matematikoi, vselennaya i est' matematika".
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ru_astroph
Authors: Bikas K Chakrabarti Comments: 6 pages, Springer style, from 'Econophysics of Stock and Other Markets', Eds. A. Chatterjee, B. K. Chakrabarti, New Economic Windows Series, Springer, Milan, 2006, pp~219-224 Vsego na shesti stranicah predstavlen vzglyad fizika na istoriyu ekonomiki. Po-moemu ochen' lyubopytno.
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