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| 06.12.02. astro-ph za 02 - 06 dekabrya 2002 goda: izbrannye stat'i | ||
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Teper' my budem starat'sya vydelit' "luchshih iz luchshih".
Authors: D. Segransan, P. Kervella, T. Forveille, D. Queloz
Authors: Bryan Gaensler
Authors: Stefanie Komossa et al.
Authors: Dong Lai Authors: G. Lugones, J. E. Horvath Commets: 6 pages, 7 figures, Submitted to Astronomy & Astrophysics "I na blohe sidit bloha". Sredi strannyh zvezd est' eshe bolee strannye. I esli strannye zvezdy kompaktnee neitronnyh, to "strannye strannye" zvezdy eshe bolee kompaktny. Rech' idet o t.n. color flavor locked (CFL) sostoyanii strannogo (kvarkovogo) veshestva. CFL-faza sootvetstvuet ravnomu chislu u, d, s kvarkov (nesmotrya na to, chto ih massy razlichny). Pri etom kvarki obrazuyut kuperovskie pary. V stat'e avtory dayut obzor razlichnyh uravneniya sostoyaniya dlya takoi sredy, a takzhe rassmatrivayut strukturu sootvetstvuyushih kompaktnyh ob'ektov. Svoistva CFL-zvezd otlichny ot svoistv "obychnyh" strannyh zvezd. Naprimer, u CFL-zvezd, ne mozhet byt' kory iz normal'nogo veshestva, t.k. v nih net elektronov (chto privodit k otsutstviyu elektrostaticheskogo bar'era, meshayushgo obychnomu veshestvu peremeshat'sya s kvarkovym). T.o. CFL-zvezdy v chem-to pohozhi na "obnazhennye" kvarkovye zvezdy (sm. obozrenie za proshluyu nedelyu).
Authors: D. Segransan, P. Kervella, T. Forveille, D. Queloz Commets: Accepted for publication in Astronomy and Astrophysics Letters, 4 pages, 3 figures VLTI - interferometr, rabotayushii v vidimom i blizkih k nemu diapazonah. Osnovnaya sostavlyayushaya - chetyre 8-metrovyh teleskopa (est' eshe bolee melkie, otmetim, chto ne obyazatel'no vse instrumenty odnovremenno zadeistvovany v dannom konkretnom sete nablyudenii). V dannoi stat'e avtory predstavlyayut pryamye izmereniya radiusa dlya chetyreh malomassivnyh zvezd (krasnye karliki), provedennye v diapazone 2.2 mikrona. Ryad statei po linzirovaniyu s plavnym perehodom na astrometricheskii sputnik GAIA
Authors: A.F. Zakharov Commets: 8 pages, 2 figures, invited talk at the XIII National Conference of Yugoslav Astronomers, October 17, 2002, Belgrade
V nachale polezno prochest' kratkoe vvedenie v mikrolinzirovanie,
predstavlennoe v stat'e A.F. Zaharova. Zdes' opisyvayutsya teoreticheskie
osnovy yavleniya, a takzhe privodyatsya osnovnye dostignutye na nastoyashii moment
rezul'taty.
Authors: M. Jaroszynski, B. Paczynski Commets: 8 pages, 3 figures, submitted to Acta Astronomica
Zatem mozhno prochest' pro vozmozhnuyu registraciyu mikrolinzirovaniya na
planete. Sobytie interpretiruetsya kak linzirovanie na dvoinom ob'ekte:
zvezda+planeta. Massa poslednei poryadka massy Yupitera.
K sozhaleniyu, dannyh po etomu sobytiyu malo, a potomu avtory predlagayut
izmenit' strategiyu eksperimenta OGLE, chtoby imet' vozmozhnost' bolee
detal'nogo izucheniya podobnyh yavlenii.
Authors: Geraint F. Lewis, Rodrigo A. Ibata Commets: 10 Pages, Accepted for publication in MNRAS - Figures reduced
Mikrolinzirovanie pomogaet izuchat' ne tol'ko ob'ekty galo ili baldzha nashei
Galaktiki, no i vnegalakticheskie ob'ekty. Avtory predlagayut metod
issledovaniya samyh vnutrennih chastei kvazarov.
Authors: N.W. Evans, H.J. Witt Commets: 12 pages, submitted to MNRAS
Ne stoit zabyvat' i o sil'nom linzirovanii, t.e. linzirovanii na massivnyh
vnegalakticheskih ob'ektah. V etoi rabote avtory predlagayut novuyu metodiku
obrabotki dannyh, kotoraya pozvolyaet poluchat' iz teh zhe nablyudenii bolee
polnuyu (i odnoznachnuyu) informaciyu o strukture linz.
Authors: N.W. Evans, V. Belokurov Commets: 10 pages, Proceedings of the Third Sakharov Conference, eds A. Semikhatov et al., (Scientific World, Moscow). (A succinct version of the plenary lecture)
GAIA - astrometricheskii sputnik novogo pokoleniya.
Seichas aktivno obsuzhdaetsya, kakie rezul'taty mogut byt' polucheny s pomosh'yu
etogo instrumenta. Avtory koncentriruyutsya na dvuh voposah, odnim iz kotoryh
yavlyaetsya t.n. astrometricheskoe mikrolinzirovanie.
V dannom effekte proishodit ne izmenenie bleska zvezdy, a izmenenie ee
polozheniya, chto mozhno zaregistrirovat' s pomosh'yu takogo tochnogo pribora kak
GAIA.
Authors: Gerry Gilmore Commets: 11 pages, Proceedings of the Monte Rosa Conference "GAIA Spectroscopy, Science and Technology ", U.Munari ed., ASP Conf. Series, in press Ne vse vyskazyvayut odnoznachnyi optimizm po povodu sovremennogo dizaina sputnika GAIA. Gerri Gilmor daet skepticheskii analiz vozmozhnostei sputnika, pokazyvaya, kakih iz postavlennyh celei vozmozhno ne udast'sya dostignut'. On predlagaet optimizirovat' nekotorye iz priborov na sputnike (eto eshe ne pozdno!), chtoby missiya byla bolee produktivnoi.
Authors: Bing Zhang, Peter Meszaros, Junfeng Wang Commets: 10 pages, Review talk at IAU Symposium 214 `High energy processes and phenomena in astrophysics'', 6-10 August, 2002, Suzhou. To appear in the proceedings (eds. X.-D. Li, Z.-R. Wang & V. Trimble) Nazvanie govorit samo za sebya. Obzornyi doklad na 214 simpoziume MAS posvyashen poslednim rezul'tatam v issledovanii gamma-vspleskov. Osoboe vnimanie udeleno budushim proektam po nablyudeniyu poslesvecheniya v ochen' zhestkom diapazone. Rassmatrivayutsya razlichnye modeli vspleskov.
Authors: Bing Zhang Commets: 8 pages, Invited talk at the Sixth Pacific Rim Conference on Stellar Astrophysics, a tribute to Helmut A. Abt, July 11-17, 2002, Xi'an. To appear in the proceedings (eds. K. S. Cheng, K. C. Leung & T. P. Li) Nedostayushim zvenom avtor schitaet otsutstvie pryamyh nablyudatel'nym svidetel'stv v pol'zu togo, chto chast' energetiki magnitarov ob'yasnyaetsya zamedleniem. Avtor podrobno razbiraet vozmozhnye istochniki energii magnitarov (istochnikov myagkih povtoryayushihsya gamma-vspleskov i anomamal'nyh rentgenovskih pul'sarov). Stat'ya takzhe prosto yavlyaetsya horoshim kratkim opisanie togo, chto takoe istochniki myagkih povtoryayushihsya gamma-vspleskov i anomamal'nye rentgenovskie pul'sary.
Authors: P. Kahabka Commets: 12 pages, To appear in Compact Stellar X-Ray Sources, eds. W.H.G. Lewin and M. van der Klis, Cambridge University Press Obzor po sverhmyagkim istochnikam. Eto rentgenovskie istochniki s temperaturoi okolo 100 000 - 1 000 000 K, i svetimost'yu 1036-1038 erg/s. Oni byli otkryty v 80-e gg. Eto tesnye dvoinye sistemy, gde akkreciruyushim ob'ektom po vsei vidimosti yavlyayutsya belye karliki. Opisyvayutsya nablyudatel'nye dannye po izvestnym sistemam dannogo tipa, a takzhe rassmatrivayutsya fizicheskie processy, proishodyashie v nih.
Authors: M. S. Oey Commets: 10 pp., uses kluwer.cls. Invited Review to appear in "From Observations to Self-Consistent Modelling of the ISM in Galaxies, eds. M. A. de Avillez & D. Breitschwerdt, JENAM 2002 WS-ISM, (Kluwer) Ap&SS, in press Veter ot molodyh zvezd i chastye vspyshki sverhnovyh, soprovozhdayushie burnoe zvezdoobrazovanie, okazyvayut sil'noe vliyanie na dinamiku i strukturu mezhzvezdnoi sredy. Avtor rassmatrivaet model', opisyvayushuyu eto vliyanie, a takzhe daet kratkii obzor po dannoi teme. Sm. takzhe astro-ph/0212052
Authors: V. N. Gamezo et al. Commets: 17 pages, 5 figures. To appear in Science, January 2003 V meru populyarnaya i polnaya stat'ya (material idet v Science) po sverhnovym tipa Ia, t,e, po vzryvam belyh karlikov. No krasivyh kartinok malo - vsego odna stranichka (9-ya).
Authors: A. Y. Potekhin, G. Chabrier Commets: 23 pages, 12 figures, 1 table. AASTeX v.5.0 with emulateapj5.sty. Accepted for publication in the Astrophysical Journal Ne mogu ne otmetit' stat'yu po atmosferam neitronnyh zvezd s sil'nym magnitnym polem. Odnako, dlya bolee populyarnogo izlozheniya mozhno prochest' ne bol'shuyu stat'yu, a bolee korotkii variant astro-ph/0212077.
Authors: Christopher S.Reynolds, Michael A.Nowak Commets: 103 pages, 21 figures. Review article, accepted for publication in Physics Reports Fakticheski eto kniga.Avtory podrobneishim obrazom razbirayut, kak po nablyudeniyam fluorescentnyh linii mozhno provodit' detal'nuyu diagnostiku akkreciruyushih chernyh dyr v tesnyh dvoinyh sistemah i v yadrah galaktik.
Authors: E. Carretti et al. Commets: 9 pages, 5 figures, conference proceeding, to appear in "Polarimetry in Astronomy", SPIE Symposium on 'Astronomical Telescopes and Instrumentation', Waikoloa, August 22-28 2002 Chasto sprashivayut, zachem (v smysle nauki) nuzhna MKS. Otvet: na MKS budet mnogo astrofizicheskih missii, i eto namnogo deshevle (konechno, posle togo, kak uzhe postroili stanciyu), chem zapuskat' otdel'nye sputniki. Sredi etih proektov i rossiisko-ital'yanskii SPOrt. Napomnyu, chto u Rossii uzhe byl svoi sputnik, izmeryavshii reliktovyi fon. Eto apparat "Relikt" (sm. opisanie eksperimenta i rezul'tatov v nedavnei knige Sazhina). Teper' planiruetsya primenit' nakoplennyi opyt v sovmestnom eksperimente po izmereniyu polyarizacii.
Authors: Mallory S.E. Roberts Commets: 4 pages, to appear in the proceedings of the conference "Radio Pulsars" held in Chania, Crete, Sept. 2002 Iz 270 istochnikov tret'ego kataloga EGRET dve treti ne otozhdestvleny. Nekotorye iz nih mogut byt' vnegalakticheskimi (blazary), no bol'shinstvo demonstriruet koncentraciyu v ploskosti Galaktiki. Mozhet byt' eto odinochnye chernye dyry. Vozmozhno, eto neitronnye zvezdy. Eto mogut byt' kak sovsem molodye ob'ekty (naprimer, rozhdennye v Poyase Gulda), tak i nemnogo bolee starye radiopul'sary, chei puchok ne popadaet na Zemlyu (po etoi tematike v mae budet zamechatel'naya konferernciya v Gonkonge). Avtor rasskazyvaet o vedushihsya poiskah radiopul'sarov sredi ob'ektov EGRET.
Authors: W.N. Brandt et al. Commets: 10 pages; in New X-ray Results from Clusters of Galaxies and Black Holes (Oct 2002; Houston, TX), eds. C. Done, E.M. Puchnarewicz, M.J. Ward, Advances in Space Research, submitted; list of z > 4 X-ray detections available from http://www.astro.psu.edu/users/niel/papers/papers.html Daetsya obzor rentgenovskih nablyudenii sverhmassivnyh chernyh dyr v yadrah galaktik na bol'shih krasnyh smesheniyah (z > 4).
Authors: Bryan Gaensler Commets: 10 pages, 3 embedded EPS figures, 3 JPG figures, uses cospar.sty. Invited review to appear in "High Energy Studies of Supernova Remnants and Neutron Stars" (COSPAR 2002), Advances in Space Research, in press. PS version with all figures embedded available at http://cfa-www.harvard.edu/~bgaensler/preprints/0212086.ps Anomal'nye rentgenovskie pul'sary (ARP) i istochniki myagkih povtoryayushihsya gamma-vspleskov (MPG) po vsei vidimosti yavlyayutsya molodymi odinochnymi sil'nozamagnichennymi neitronnymi zvezdami. Znachit, mozhno ozhidat', chto oni budut nahodit'sya vnutri ili v neposredstvennoi blizosti ostatkov sverhnovyh. Odnako, tut ne vse tak prosto. Rasstoyaniya izmeryayutsya ne ochen' horosho, vozrasta - eshe huzhe. My vse vidim v proekcii na nebesnuyu sferu. A potomu v kazhdom konkretnom sluchae vopros o real'nosti svyazi mezhdu neitronnoi zvezdoi i ostatkom sverhnovoi trebuet podrobnogo razbiratel'stva (i vse ravno zachastuyu ostayutsya somneniya). V nebol'shom obzore avtor detal'no razbiraet etu problemu. Po vsei vidimosti ARP yavno pokazyvayut svyaz' s ostatkami, a vot MPG - net. Avtor vyskazyvaet gipotezu, chto eto mozhet byt' svyazano s tem, chto poslednie obrazovalis' v rezul'tate vzryvov bolee massivnyh zvezd.
Authors: J. Hu, S. N. Zhang, T.P. Li Commets: 5 page and 3 figure, The 6th pacific rim conference on steller astrophysics -- a tribute to Helmut A. Abt Rech' idet ob ocenke rasstoyaniya do peremennyh rentgenovskih istochnikov v nashei Galaktike. S rasstoyaniyami v astronomii vsegda bylo trudno. Okazyvaetsya, chto v 1973 g. Tryumper i Shenfel'der predlozhili zabavnyi metod, primenit' kotoryi udalos' tol'ko v 2000 g. Avtory dannoi stat'i nemnozhko modificirovali metodiku. V obshem - dovol'no interesno.
Authors: Stefanie Komossa et al. Commets: ApJ Letters in press, 7 colour figures included; preprint and related papers on NGC 6240 also available at http://www.xray.mpe.mpg.de/~skomossa/
Authors: David Maurin et al. Commets: 53 pages, review paper. to appear in Research Signposts, "Recent Research Developments in Astrophysics" Bol'shoi obzor po kosmicheskim lucham, tochnee po ih yadernoi sostavlyayushei. Obsuzhdaetsya problema antimaterii (antiprotony i t.d.) v kosmicheskih luchah. Sm. takzhe dve bol'shie vzaimosvyazannye raboty teh zhe avtorov po galakticheskim kosmicheskim lucham astro-ph/0212112 i astro-ph/0212113.
Authors: Dong Lai Commets: Conference proceedings; to be published in "Radio Pulsars" (ASP Conf. Ser.), ed. M. Bailes, D. Nice, & S. Thorsett. 7 pages My ploho znaem: kak vzryvayutsya sverhnovye. Sootvetstvenno, my ploho predstavlyaem svoistva novorozhdennyh kompaktnyh ob'ektov, naprimer, neitronnyh zvezd. Avtor daet spisok nereshennyh problem, osobenno podrobno obsuzhdaya problemu skorostei otdachi (kick velocity) neitronnyh zvezd. Prostoi ponyatnyi obzorchik.
Authors: Bohdan Paczynski Commets: 4 pages, latex, to appear in: `Towards an International Virtual Observatory'', June 2002, Garching bei Muenchen (Germany), eds. Gorski K. M. et al, ESO conference series Kratko opisyvayutsya dva proekta: OGLE (Optical Gravitational Lensing Experiment) i ASAS (All Sky Automated Survey). Oba proekta dayut ogromnoe kolichestvo informacii. Obsuzhdaetsya, kak etot massiv dannyh mozhet byt' ispol'zovan Virtual'noi observatoriei.
Arhiv statei, voshedshih v predydushie vypuski.
Razdely arhiva (s iyulya 2002 g.): Poleznye astronomicheskie ssylki. Obzornye stat'i v astro-ph s 2001 g. |
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