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The R.A.P. Project (Reviews of Astro-Ph)

Gamma-vspleski


astro-ph/0207319 Neutrino trapping and accretion models for Gamma-Ray Bursts
Author: Tiziana Di Matteo, Rosalba Perna, Ramesh Narayan
Comments: 23 pages including 6 figures, accepted by ApJ

Seichas mnogie modeli gamma-vspleskov vklyuchayut v sebya, v kachestve mehanizma vzryva, akkreciyu bol'shogo kolichestva veshestva (neskol'ko mass solnca s tempom desyatye doli massy solnca v sekundu) na chernuyu dyru.

Popham et al. i Narayan et al. pokazali, chto pri tempe akkrecii bol'she 0.1 massy solnca v sekundu ohlazhdenie v osnovnom obespechivaetsya neitrino. V dannoi rabote avtory utochnyayut eti vychisleniya, vklyuchaya processy perenosa neitrino.

Pokazano, chto potok stanovitsya opticheski tolstym dlya neitrino vnutri oblasti 6-40 shvarcshil'dovskih radiusov (temp akkrecii 0.1-10 mass solnca v sekundu). Dlya tempa bol'she 1 massy solnca v sekundu neitrino zahvatyvayutsya potokom i stanovitsya vazhnym advekcionnoe ohlazhdenie. Vazhnoi okazyvaetsya annigilyaciya neitrino.


astro-ph/0207569 Jets, winds and bursts from coalescing neutron stars
Authors: Stephan Rosswog, Enrico Ramirez-Ruiz
Comments: 5 pages, 3 figures, accepted for publication in MNRAS Letters; movies can be found at http://www.star.le.ac.uk/~sro/

Rezul'taty modelirovaniya sliyaniya neitronnyh zvezd ispol'zuyutsya dlya rassuzhdenii o tom, mozhet li annigilyaciya neitrino-antineitrinnyh par dat' dostatochno energii dlya "zapitki" gamma-vspleskov (osobenno t.n. korotkih vspleskov).

Pokazano, chto dazhe v nailuchshih usloviyah nel'zya poluchit' bol'she 10^{48} erg. Odnako, energii dostatochno dlya "predvestnika", kotoryi sozdaet kavernu vokrug slivsheisya sistemy. A zatem uzhe proishodit sam gamma-vsplesk, svyazannyi s obrazovavsheisya chernoi dyroi...


astro-ph/0207666 SCUBA observations of the host galaxies of four dark gamma-ray bursts
Authors: V.E. Barnard et al.
Comments: 6 pages. Accepted for publication in MNRAS

SCUBA - Submillimetre Common-User Bolometer Array, pribor, ustanovlennyi na teleskope im. Maksvella. Avtory opisyvayut poisk hozyaiskih galaktik opticheski temnyh gamma-vspleskov. Vidimoe izluchenie moglo prosto okazat'sya pogloshennym pyl'yu, a v submillimetrovom diapazone mozhno nadeyat'sya chto-to rassmotret'. Odnako, uvidet' nichego ne udalos'. Eto mozhet govorit' o tom, chto pyl' tut ni pri chem, galaktiki samye obychnye (sredi hozyaiskih galaktik), a znachit temnye gamma-vspleski ne otslezhivayut sil'no zapylennye oblasti aktivnogo zvezdoobrazovaniya, kotorye dolzhny byli by proyavit'sya v etih nablyudeniyah.


astro-ph/0208008 Discovery of GRB 020405 and its Underlying Supernova
Authors: P.A. Price et al.
Comments: 19 pager, 3 figures (2 in colour). Submitted to Astrophysical Journal Letters

Kak eto delaetsya? V stat'e podrobno opisyvaetsya otkrytie gamma-vspleska mezhplanetnoi sputnikovoi set'yu, a takzhe ego posleduyushi nablyudeniya. Rasskazano, kak s pomosh'yu robotizirovannogo teleskopa bylo otkryto poslesvechenie v optike. Kak byl otkryt tranzientnyi radioistochnik. V obshem na konkretnom primere mozhnop rochest' pro vsyu kuhnyu sovremennyh issledovanii gamma-vspleskov, vklyuchaya obsuzhdenie o vozmozhnoi ih svyazi so sverhnovymi.


obzor! astro-ph/0208304 On the Theory of Gamma Ray Bursts and Hypernovae: The Black Hole Soft X-ray Transient Sources
Authors: Chang-Hwan Lee, Gerald E. Brown
Comments: 59 pages, 12 figures, review article

V obzore rassmatrivayutsya evolyuciya tesnyh dvoinyh sistem s chernymi dyrami, sverhyarkie rentgenovskie istochniki (ultraluminous X-ray sources), gipernovye i gamma-vspleski. Avtory pytayutsya naiti geneticheskuyu svyaz' mezhdu vsemi etimi tipami ob'ektov.


astro-ph/0209219 Konus catalog of short GRBs
Authors: E.P.Mazets et al.
Comments: 12 pages, including 4 tables, LaTeX AASTeX5.0, with 84 PNG files of reduced size figures. Catalog with full size figures is available at http://www.ioffe.ru/LEA/shortGRBs/Catalog/ To be submitted to the ApJ(Suppl.)

Katalog korotkih gamma-vspleskov, zaregistrirovannyh s 1994 po 2002 gg. v eksperimente GGS-Wind Konus. V kataloge privedeny dannye o 130 sobytiyah.


astro-ph/0209228 Neutron-Fed Afterglows of Gamma-Ray Bursts
Authors: Andrei M. Beloborodov
Comments: submitted to ApJ Letters

V astrofizike vysokih energii vse chashe vspominayut o neitronah (hotya eshe poltora goda nazad bylo nemnogo udivitel'no slyshat' doklad Derisheva v Peterburge). V svoei stat'e Andrei Beloborodov rassmatrivaet rol' neitronov v gamma-vspleskah. Po ego mneniyu prisutstvie sushestvennogo kolichestva neitronov v vybrose mozhet sushestvenno izmenit' dinamiku vspleska. Neitrony privodyat k zamedleniyu vybrosa. Krome togo, nalichie neitronov mozhet privodit' k uyarchaniyu na vremenah poryadka neskol'kih dnei (chto i nablyudaetsya).

(Takzhe sm. astro-ph/0209231 o roli neitral'nyh chastic - neitronov, fotonov, neitrino - v dzhetah blazarov).


astro-ph/0209257 Gamma Ray Bursts from delayed collapse of neutron stars to quark matter stars
Authors: Z. Berezhiani et al.
Comments: AAS LaTeX, 11 pages, 1 figure, 2 tables

Daetsya ob'yasnenie togo, kak gamma-vsplesk mozhet proizoiti spustya mnogo dnei ili let posle vzryva sverhnovoi. Ideya sostoit v perehode adronnogo veshestva neitronnoi zvezdy v kvarkovoe veshestvo. V rezul'tate vydelyaetsya poryadka 1052-53 erg.


obzor astro-ph/0209264 Black holes and gamma ray bursts: background for the theoretical model
Authors: Remo J. Ruffini
Comments: 33 pages, 19 figures, to appear in the "Proceedings of the Ninth Marcel Grossmann Meeting on General Relativity (MGIXMM)", World Scientific (Singapore, in press)

Remo Ruffini - izvestneishii specialist po izucheniyu chernyh dyr. V techenie dolgogo vremeni on i ego gruppa razrabatyvayut al'ternativnuyu standartnym teoriyu gamma-vspleskov. Ideya sostoit v polyarizacii vakuuma pri kollapse.



astro-ph/0209339 On Radiation Drag and Neutrons in GRBs
Authors: Tomasz Bulik, Marek Sikora, Rafal Moderski
Comments: 4 pages, Proceedings of the XXXVIIth Rencontres de Moriond, Les Arcs, France, 4-9 March 2002

Opyat' pro neitrony. V rezul'tate gamma-vspleska mozhno ozhidat' poyavleniya v vybrose bol'shogo chisla neitronov (Derishev et al. 1999). Eto vedet k dinamicheskim effektam, izmenyayushim krivuyu bleska. Avtory issleduyut etu situaciya s ispol'zovaniem ranee neuchityvavshihsya effektov.



astro-ph/0209482 Relativistic Jets from Collapsars: Gamma-Ray Bursts
Authors: Weiqun Zhang, S. E. Woosley
Comments: 8 pages, 3 figures, proceedings of 3D Stellar Evolution Workshop, Livermore, July, 2002

Odnoi iz populyarnyh modelei gamma-vspleskov v nashe vremya yavlyaetsya konstrukciya s relyativistskimi dzhetami, b'yushimi iz massivnyh gelievyh zvezd, kollapsiruyushih v chernye dyry. V svoei stat'e avtory modeliruyut rasprostranenie dzhetov v tele zvezdy, a zatem v zvezdnom vetre (napomnyu, chto massivnye zvezdy intensivno teryayut veshestvo v techenie svoei zhizni, i ih okrestnotsi zapolneny veshestvom zvezdnogo vetra).


astro-ph/0210211 Gravitational Radiation from Gamma-Ray Burst Progenitors
Authors: Shiho Kobayashi, Peter Meszaros
Comments: 26 pages, 5 figures, submitted to ApJ

Issleduyutsya vozmozhnye gravitacionnye signaly v razlichnyh modelyah gamma-vspleskov: sliyaniya kompaktnyh ob'ektov i vzryvy massivnyh zvezd. Dayutsya ocenki dlya budushih nablyudenii na vtoroi ocheredi LIGO.


astro-ph/0210433-436 4 stat'i Donal'da Lemba po gamma-vspleskam
Authors: Donal'd Lemb i soavtory

Chetyre blizkih po tematike i opublikovannyh odnovremenno stat'i Donal'da Lemba po gamma-vspleskam.

astro-ph/0210433
Donald Q. Lamb Rol' pyli v poslesvecheniyah gamma-vspleskov (The Role of Dust in GRB Afterglows)

Obilie pyli i klochkovataya struktura oblastei zvezdoobrazovaniya, v kotoryh, po poslednei mode, vzryvayutsya gamma-vspleski estestvennym obrazom ob'yasnyaet nablyudatel'nyi fakt, chto opticheskoe poslesvechenie poyavlyaetsya tol'ko u 30-50% vspleskov. Otsutstvie poslesvecheniya dolzhno soprovozhdat'sya vspyshkoi izlucheniya v blizkoi infrakrasnoi oblasti i-za pereizlucheniya pogloshennoi pyl'yu energii. Maksimum vspyshki budet prihodit'sya na 1-30 den' posle gamma-vspleska.

astro-ph/0210434
Donald Q. Lamb Gamma-vspleski kak kosmologicheskie zondy (Gamma-Ray Bursts as a Probe of Cosmology)

Esli dlinnye gamma-vspleski svyazany s kollapsami massivnyh zvezd, to sami vspleski i ih poslesvecheniya mogut sluzhit' moshnym instrumentom dlya izucheniya kosmologii i evolyucii molodoi Vselennoi. Mozhno ozhidat', chto samye rannie vspleski proishodili pri z=15-20. Togda po liniyam poglosheniya v ih spektrah my smozhem uznat' ob evolyucii tempa zvezdoobrazovaniya, vklyuchaya zvezdy pervogo pokoleniya, ob izmenenii krupnomasshtabnoi struktury s z i ob epohe reionizacii.

astro-ph/0210435
Nevin Weinberg, Carlo Graziani, and Donald Q. Lamb
Opredelenie chastoty vspyshek gamma-vspleskov, kak funkcii krasnogo smesheniya (Determining the Gamma-Ray Burst Rate as a Function of Redshift)

Segodnya izvestno 14 gamma-vspleskov s horosho opredelennym krasnym smesheniem i eshe 7 dlya kotoryh polucheny ogranicheniya na z. Maksimal'noe chislo vspleskov prihoditsya na z=1 i tol'ko neskol'ko lezhat na z=1.5. V to zhe vremya maksimum zvezdoobrazovaniya prihoditsya na z primerno ravnoet 2. Odnako eto razlichie okazyvaetsya statisticheski ne znachimym.

Poslednyaya chetvertaya stat'ya menee interesna.


astro-ph/0210645 Submillimetrovye i radio nablyudeniya galaktik, v kotoryh rablyudalis' gamma-vspleski (A Submillimeter and Radio Survey of Gamma-Ray Burst Host Galaxies: A Glimpse into the Future of Star Formation Studies)
Authors: E. Berger et al.
Commets: Submitted to ApJ; 36 pages, 3 tables, 7 figures

Avtory vpervye proveli polnyi obzor t.n. "hozyaiskih" (Host) galaktik gamma-vspleskov v submillimetrovom i radiodiapazonah. Eti volny byli vybrany ne sluchaino. Delo v tom, chto est' osnovaniya podozrevat' nalichie svyazi mezhdu gamma-vspleskami i zvezdoobrazovaniem. Esli gamma-vspleskm eto gipernovye, to oni dolzhny poyavlyat'sya v oblastyah moshnogo zvezdoobrazovaniya. Poslednie v svoyu ochered' luchshe izuchat'imenno v etih dlinnovolnovyh diapazonah.

Nablyudeniya pokazali, chto galaktiki i v samom dele ne srednie. Dvadcat' procentov iz nih obladayut ochen' vysokim tempom zvezdoobrazovaniya (500 mass solnca v god, dlya sravneniya: u nashei Galaktiki - poryadka odnoi massy Solnca v god).


obzor astro-ph/0211063 Gamma-vspleski i sverhnovye s dzhetami (Gamma-Ray Bursts and Jet-Powered Supernovae)
Authors: S. E. Woosley et al.
Commets: 10 pages, 2 figures, to appear in Proc. "From Twilight to Highlight - The Physics of Supernovae" ESO/MPA/MPE Workshop, Garching July 29 - 31

Daetsya obzor sovremennogo sostoyaniya del v izuchenii svyazi gamma-vspleskov so sverhnovymi zvezdami, a takzhe rol' dzhetov (strui) v etih processah. Rassmatrivayutsya samye raznye modeli, gde glavnuyu rol' igraet vrashenie, akkerciya na chernuyu dyru ili sverhsil'noe magnitnoe pole. Po mneniyu avtorov 99% sverhnovyh s gamma-vspleskami nikak ne svyazany, t.k. dlya gamma-vspleskov neobhodimy dovol'no ekzoticheskie usloviya.


astro-ph/0211174 Rentgenovskie linii, predki i kollimaciya u gamma-vspleskov (X-ray lines, progenitor and beaming of Gamma-Ray Bursts)
Authors: Davide Lazzati
Commets: 12 pages, 2 postscript figures, Review talk at the NBSI workshop "Beaming and Jets in Gamma Ray Bursts", Copenhagen, August 12-30, 2002

Po krainei mere u 5 gamma-vspleskov byli zaregistrirovany rentgenovskie linii izlucheniya, prichem vo vseh etih sluchayah oni imeli shodnye harakteristiki: svetimost' v liniyah sostavlyala L~1044 erg/s, ekvivalentnaya shirina ~1 keV, eto byli linii zheleza (sudya po chastote) i, nakonec, vse oni nablyudalis' primerno cherez 10 chasov posle gamma-vspleska. Linii mogut izluchat'sya v nepodvizhnom veshestve pered frontom udarnoi volny gamma-vspleska ili veshestvom za ee frontom. V oboih sluchayah svetimost' v liniyah pozvolyaet ogranichit' polnuyu svetimost' gamma-vspleska i, takim obrazom, otvetit' na vopros o napravlennosti ili izotropii ego vybrosa. (V dannoi rabote takie ocenki ne sdelany, iz-za nehvatki dannyh, no pokazano kakim putem nado idti.)


obzor astro-ph/0211620 Kosmicheskie gamma-vspleski, ih poslesvecheniya i domashnie galaktiki (Cosmic Gamma-Ray Bursts, Their Afterglows, and Their Host Galaxies)
Authors: K. Hurley, R. Sari, and S. G. Djorgovski
Commets: 47 pages, 11 figures

Eto obzornaya stat'ya dlya knigi "Kompaktnye zvezdnye rentgenovskie istochniki", kotoraya vyidet v 2003 g. v izdatel'stve Kembridzhskogo universiteta. V nei opisana fenomenologiya gamma-vspleskov, teoriya ih poslesvechenii, nablyudeniya domashnih galaktik i ih interpretaciya. Kraine rekomenduyu.


miniobzor astro-ph/0212015 Nekotorye nedavnie dostizheniya v issledovanii poslesvecheniya gamma-vspleskov (Some recent developments in gamma-ray burst afterglow and prompt emission models)
Authors: Bing Zhang, Peter Meszaros, Junfeng Wang
Commets: 10 pages, Review talk at IAU Symposium 214 igh energy processes 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.


astro-ph/0212298 Sravnitel'nyi analiz rentgenovskih poslesvechenii opticheski yarkih i temnyh gamma-vspleskov (A comparative study of the X-ray afterglows properties of optically bright and dark GRBs)
Authors: M. De Pasquale, L. Piro, R. Perna et al.
Commets: 19 pages, 5 figures. To be published in The Astrophysical Journal

Po dannym BeppoSAX (do fevralya 2001) 90% gamma-vspleskov obladayut rentgenovskimi poslesvecheniyami, a opticheskie poslesvecheniya est' tol'ko primerno u poloviny vspleskov. Razlichayutsya li rentgenovskie poslesvecheniya u "opticheski yarkih" vspleskov (obladayushih opticheskim poslesvecheniem) i u "temnyh"? Otvet - DA. So statisticheskoi znachimost'yu 99.8% pokazano, chto "temnyh" gamma-vspleskov rentgenovskii potok v diapazone 1.6-10 keV v srednem v 5 raz vyshe, chem u "yarkih". Est' i nekotorye drugie otlichiya.


astro-ph/0212345 Nanolinzirovanie gamma-vspleskov (Nanolensing of gamma-ray bursts)
Authors: Mark A. Walker (Sydney Uni, Australia Telescope National Facility Raman Research Institute), Geraint F. Lewis (Sydney Uni & Anglo-Australian Observatory)
Commets: 28 pages, 12 figures, submitted to ApJ

Nekotorye teorii ob'yasnyayut izmenenie svetimosti kvazarov na intervalah vremeni poryadka goda effektami mikrolinzirovaniya na telah planetnyh mass, raspredelennyh v mezhgalakticheskom prostranstve. No takie mikrolinzirovanie mozhet ob'yasnit' svoistva gamma-vspleskov. Maksimal'noe usilenie potoka dostigaetsya pri peresechenii sistemy kaustik, podobnyh pokazannym na risunke. Pri nalichii bol'shogo kolichestva linz struktura kaustik stanovitsya ochen' slozhnoi i ih peresechenie mozhet ob'yasnit' vse nablyudaemoe raznoobrazie vremennyh profilei gamma-vspleskov. Zametim, chto zdes' budut ochen' sil'ny parallakticheskie effekty i dazhe dostatochno blizkie nablyudateli budut videt' vspleski s profilyami raznoi formy. Po krainei mere kakaya-to chast' gamma-vspleskov mozhet ob'yasnyat'sya podobnym obrazom.


astro-ph/0212536 Neitrino sverhvysokih energii ot gamma-vspleskov s predshestvuyushei sverhnovoi (High Energy Neutrinos from Gamma-Ray Bursts with Precursor Supernovae)
Authors: Soebur Razzaque et al.
Commets: 4 pages, 1 figure, submitted to Phys. Rev. Lett

Esli gamma-vspleski mogut byt' svyazany so sverhnovymi, to vozmozhna i svyaz' mezhdu vspleskom i ostatkom sverhnovoi. Eto proizoidet, esli est' nebol'shaya zaderzhka mezhdu sbrosom veshestva obolochki i prihodom "ognennogo shara" ili relyativistskogo dzheta. V takom sluchae uskorennye protony naletyat na ostatok. Eto mozhet privesti k generacii neitrino. Avtory rassmatrivayut etot process i prihodyat k vyvodu, chto esli sdelannye predpolozheniya verny, to sleduyushee pokolenie kilometrovyh detektorov smozhet poimat' takie neitrino.

Konec 2002 g. otmechen eshe dvumya stat'yami po gamma-vspleskam: "Polarized Gravitational Waves from Gamma-Ray Bursts" astro-ph/0212539, "Constraining the Structure of GRB Jets Through the Afterglow Light" astro-ph/0212540". Vo vseh stat'yah tak ili inache obsuzhdayutsya dzhety, svyazannye so vspleskami.


dissertaciya (PhD) astro-ph/0301028 Navstrechu ponimaniyu prirody predshestvennikov gamma-vspleskov (Toward an Understanding of the Progenitors of Gamma-Ray Bursts)
Authors: Joshua S. Bloom
Commets: Ph.D. thesis, Caltech. 196(!) pages including low-resolution figures.

Zhalko, chto u nas net nekoego edinogo saita, kuda mozhno bylo by vykladyvat' dissertacii. Nespecialistam budet interesno pochitat' vvedeniya k kazhdoi glave. Krome togo, na moi vzglyad, v dissertacii sobrana horoshaya bibliografiya.

Tak kak eto dissertaciya i avtor ne byl ogranichen ob'emom, mnogie voprosy v nei rassmotreny ochen' podrobno. Vyvody dissertanta takovy:

  • Vysokotochnaya lokalizaciya dolgih vspleskov ukazyvaet na ih svyaz' s normal'nymi galaktikami s moshnym zvezdoobrazovaniem na umerennyh krasnyh smesheniyah poryadka edinicy.
  • Radial'noe raspredelenie mest vspyshek v galaktikah ne soglasuetsya s gipotezoi sliyaniya dvoinyh neitronnyh zvezd. No horosho korelliruet s ul'trafioletovym izlucheniem galaktik, chto ukazyvaet na vozmozhnuyu svyaz' s oblastyami obrazovaniya massivnyh zvezd.
  • Bolee chetko na svyaz' gamma-vspleskov so sverhnovymi ukazyvaet obnaruzhenie v opticheskih poslesvecheniyah GRB 980326 and GRB 011121 "plecha", otozhdestvlyaemogo s krivoi bleska sverhnovoi, nalozhivsheisya na zatuhayushee poslesvechenie. Drugoe ob'yasnenie proishozhdeniya etogo izbytka trebuet sushestvovaniya vokrug vspleska plotnoi obolochki, kotoruyu mog by sozdat' moshnyi zvezdnyi veter, chto opyat'-taki ukazyvaet na massivnye zvezdy.

Vryad li vy naidete v etom manuskripte chto-to radikal'no novoe, no Koe-chto interesnoe v nem nesomnenno est'.

Dlya ekonomii mesta v dissertacii privedeny risunki nizkogo razresheniya. Vysokokachestvennyi PDF-fail dissertacii mozhno vzyat' po adresu:
http://www-cfa.harvard.edu/~jbloom/thesis.html.


astro-ph/0301268 Standartnyi rezervuar kineticheskoi energii v poslesvecheniyah gamma-vspleskov (A Standard Kinetic Energy Reservoir in Gamma-Ray Burst Afterglows)
Authors: E.Berger, S.R.Kulkarni and D.A.Frail
Commets: Submitted to ApJL; 17 pages; 2 tables; 2 figures

V stat'e dan analiz 41 rentgenovskogo poslesvecheniya gamma-vspleskov: rentgenovskie potoki, rasschitannaya izotropnaya svetimost', ugly kollimacii. Byla obnaruzhena korrelyaciya uglov kollimacii i izotropnoi svetimosti, chto oznachaet razbros istinnoi svetimosti poslesvechenii ne bolee chem v 2 raza. Eta gipoteza o standartnoi energii poslesvechenii interesno vyglyadit na fone vyskazannoi ranee gipotezy o standartnoi energii samih gamma-vspleskov (astro-ph/9908136).

Tablicy mozhno posmotret' tut.


astro-ph/0301318 Rannie rentgenovskie poslesvecheniya korotkih gamma-vspleskov Po dannym eksperimenta Konus (Early Hard X-ray Afterglows of Short GRBs with Konus Experiments)
Authors: D.D.Frederiks, R.L.Aptekar, S.V.Golenetskii et al.
Commets: 4 pages, 5 figures, talk at Rome 2002 GRB Conference

Priroda gamma-vspleskov - bol'shaya zagadka, no korotkie (<2 sek) vspleski - eto polnaya t'ma. I vot problesk, odin iz pervyh.
Dlya 10 iz 125 korotkih gamma-vspleskov, nablyudavshihsya v eksperimentah Konus-Wind i Konus-A, zaregistrirovano zhestkoe rentgenovskoe izluchenie Nachinayusheesya odnovremenno so vspleskom i dlyasheesya ot desyatkov do soten sekund. Veroyatno takie poslesvecheniya - ochen' obshee svoistvo korotkih gamma vspleskov. Bolee podrobnye dannye - v stat'e.


astro-ph/0301384 Elektromagnitnaya katastrofa v ul'trarelyativistskih udarnyh volnah i izluchenie gamma-vspleskov (Electromagnetic Catastrophe in Ultrarelativistic Shocks and the Prompt Emission of Gamma-Ray Bursts)
Authors: Boris E. Stern
Commets: 12 pages, submitted to MNRAS

Na proshloi nedele my uzhe upominali ob etoi rabote, rasskazyvaya o rabote Derisheva i dr.. Ideya zaklyuchaetsya v tom, chto v ul'trarelyativistskih udarnyh volnah (kotorye mogut sushestvovat' v istochnikah gamma-vspleskov) energiya perenositsya cherez front elektronami, a ne protonami, za schet obrazovaniya par i komptonovskogo rasseyaniya.


astro-ph/0301389 Model' "pushechnogo yadra" dlya gamma-vspleskov (The cannonball model of gamma ray bursts)
Author: Arnon Dar
Commets: Invited review at the meetings "Frontiere Objects in Astrophysics", May 2002, Vulcano, Italy and "Gamma Ray Bursts in the afterglow era'', September 2002, Rome, Italy

Odna iz samyh populyarnyh al'ternativnyh modelei gamma-vspleskov v izlozhenii avtora. On (avtor) schitaet, chto ego model' luchshe ob'yasnyaet nablyudeniya.


miniobzor astro-ph/0301644 Eshe dva goda opticheskih poslesvechenii gamma-vspleskov (Two more years of GRB optical afterglows)
Authors: N. Masetti
Commets: 6 pages, 2 figures, solicited talk at the Rome 2002 GRB workshop

Daetsya korotkii obzor poslednih dvuh let issledovanii opticheskih poslesvechenii kosmicheskih gamma-vspleskov.

miniobzor astro-ph/0302004 Kosmologicheskie prilozheniya gamma-vspleskov (Cosmological Uses of Gamma-Ray Bursts)
Authors: S.G. Djorgovski et al.
Commets: An invited review, to appear in: "Gamma-Ray Bursts in the Afterglow Era: 3rd Workshop", ASPCS, in press; LaTeX file, 8 pages, 1 eps figure, style files included

V chem narodno-hozyaistvennoe znachenie gamma-vspleskov? Ne znaem.... A vot dlya kosmologii eti istochniki mogut byt' ochen' polezny! Buduchi ochen' yarkimi, oni pozvolyayut poluchat' vazhnuyu informaciyu s bol'shih krasnyh smeshenii. Razlichnye prilozheniya gamma-vspleskov k izucheniyu "Bol'shoi Vselennoi" i yavlyayutsya predmetom dannogo korotkogo obzora.

astro-ph/0302057 "Ognennye shary" s neitronnoi sostavlyayushei (Fireballs with a Neutron Component)
Authors: Andrei M. Beloborodov
Commets: talk at "Gamma-Ray Bursts in the Afterglow Era: 3rd Workshop", Rome, September 2002

Ocherednaya zametka o roli neitronov (i processov s prevrasheniem neitral'nyh chastic v zaryazhennye i obratno) v gamma-vspleskah (o rabotah Derisheva i dr. i Shterna my uzhe pisali). Vvidu interesa k gamma-vspleskam i novizny dannoi temy prochitat' etu korotkuyu zametku ochen' interesno.


miniobzor astro-ph/0302110 Model' Supranovoi i ee prilozheniya (The Supranova Model and Its Implications)
Authors: Arieh Koenigl
Commets: 8 pages, invited review, to appear in Gamma Ray Bursts in the Afterglow Era -- Third Workshop (Rome, September 2002), ASP Conference Series

Kratko opisyvaetsya model' supranovoi. V etoi modeli posle vzryva obrazuetsya massivnaya zamagnichennaya neitronnaya zvezda, kotoraya podderzhivaetsya bystrym vrasheniem. Zamedlenie privodit k kollapsu v chernuyu dyru. Model' primenyatesya dlya ob'yasneniya svoistv gamma-vspleskov. Esli eshe ne slyshali o takoi modeli - sovetuyu prochitat'.

astro-ph/0302194 Lokalizaciya gamma vspleskov v real'nom vremeni s borta INEGRAL (Real time localization of Gamma Ray Bursts with INTEGRAL)
Authors: S. Mereghetti, D. Gotz, J. Borkowski
Commets: 6 pages, latex, 3 figures, submitted to Adv. Sp. Res., Proceedings of the 34th COSPAR Scientific Assembly, Houston, 10-19 October 2002

Rentgenovskaya i gamma observatoriya INTRGRAL byla uspeshno zapushena v oktyabre 2002 g. Ustanovlennaya na ee bortu sistema IBAS (INTEGRAL Burst Alert System) Pozvolyaet registrirovat' polozhenie vspleskov s tochnost'yu 2-4' na chasti nebesnoi sfery. Za 2 mesyaca ekspluatacii takih vspleskov bylo zaregistrirovano 2. To est' mozhno ozhidat', chto za god INTEGRAL uvidit 10-15 gamma-vspleskov, koordinaty kotoryh budut izvestny spustya neskol'ko sekund posle nachala vspyshki.


astro-ph/0303174 Evolyuciya struktury relyativistskih dzhetov i krivye bleska poslesvechenii gamma-vspleskov (The Evolution of a Structured Relativistic Jet and GRB Afterglow Light-Curves)
Authors: Pawan Kumar and Jonathan Granot
Commets: 22 pages, 6 figures. Accepted for publication in ApJ (scheduled for the v590, June 20, 2003 issue)

Avtory - obladateli horoshego relyativistskogo gidrodinamicheskogo koda, kotoryi pozvolyaet im schitat' processy v gamma-vspleskah. Poschitana ocherednaya model', posle chego pokazano, chto ee rezul'taty horosho opisyvayutsya prostym analiticheskim priblizheniem (no do vypolneniya raschetov vyskazat' takoe utverzhdenie bylo nel'zya).


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