The R.A.P. Project (Reviews of Astro-Ph)
Metody obrabotki dannyh
Authors: Eric W. Greisen,Mark R. Calabretta
Comments: 15 Pages, 1 figure, LaTex with Astronomy & Astrophysics macro package, submitted to A&A, related papers at http://www.aoc.nrao.edu/~egreisen
astro-ph/0207413 Representations of celestial coordinates in FITS
Authors: Eric W. Greisen, Mark R. Calabretta
Comments: Consequent to Paper I: "Representations of world coordinates in FITS". 45 pages, 38 figures, 13 tables, aa macros v5.2 (2002/Jun). Both papers submitted to Astronomy & Astrophysics (2002/07/19). Replaced to try to get figure and table placement right (no textual changes)
V dvuh stat'yah avtory obsuzhdayut FITS format. Predlagaetsya novyi metod proektirovaniya nebesnyh koordinat na dvumernuyu ploskost' izobrazheniya. Sootvetstvenno, stat'ya mozhet byt' interesna vsem, rabotayushim s dannym formatom.
Authors: Marco Lombardi
Comments: 14 pages, 4 figures, A&A in press
Dovol'no special'naya stat'ya, posvyashennaya interpolyacii i sglazhivaniyu (v pervuyu ochered' v astronomicheskih primeneniyah). Odnako, pri etom stat'ya interesna ne tol'ko astronomam, a vsem, komu prihodit'sya stalkivat'sya s sootvetstvuyushimi metodami v svoih issledovaniyah.
Authors: P. Wozniak, K. Borozdin, M. Galassi, W. Priedhorsky, D. Starr, W.T. Vestrand, R. White, J. Wren (Los Alamos National Laboratory)
Commets: to appear in SPIE proceedings vol. 4846, 11 pages, 5 figures
Sozdanie virtual'nyh observatorii stanovitsya novym moshnym metodom issledovanii v astronomii. V stat'e obsuzhdaetsya virtual'naya observatoriya SkyDOT kotoraya budet ob'edinyat' dannye eksperimentov po poisku gravitacionnogo mikrolinzirovaniya i orientirovat'sya na issledovanie opticheskoi peremennosti ob'ektov. Obsuzhdayutsya: struktura bazy dannyh, istochniki informacii, funkcional'nost' sistemy, pol'zovatel'skie interfeisy.
Authors: Vasily Belokurov, N. Wyn Evans, Yann Le Du
Comments: 14 pages, 8 figures, submitted to MNRAS
Interesnaya rabota. Avtory pytayutsya primenit' prostye neironnye seti dlya analiza mnozhestva krivyh bleska, poluchaemyh v bol'shih obzorah (naprimer, obzorah po poisku mikrolinzirovaniya).
Authors: Paolo Gondolo et al
Commets: LaTeX, 6 pages, proceedings of the 4th International Workshop on Identification of Dark Matter (idm2002), York, England, 2-6 September, 2002
Supersimmetrichnye chasticy - naibolee populyarnyi segodnya kandidat na rol' temnoi materii. Paket programm DarkSUSY, napisannyi na yazyke FORTRAN, pozvolyaet provodit' sleduyushie tipy raschetov:
- massy i sostav razlichnyh tipov supersimmetrichnyh chastic;
- raschityvat' plotnost' reliktovyh neitralino;
- opredelyat' energiyu uskoritelya, neobhodimuyu dlya togo, chtoby razlichat' modeli supersimmetrichnyh chastic;
- vychislyat' temp registracii neitralino dlya razlichnyh metodov ih obnaruzheniya.
Authors: Piercarlo Bonifacio (1) and Elisabetta Caffau (2) ((1) INAF-Osservatorio Astronomico di Trieste, (2)Liceo Scientifico Leonardo da Vinci, Paris, France)
Commets: A&A accepted
Neskol'ko poslednih let astronomy nahodyatsya v neobychnoi, vpervye sozdavsheisya situacii - sovremennye nazemnye i kosmicheskie observatorii vydayut ogromnyi potok informacii, kotoryi obychnymi metodami ne uspevayut analizirovat'. Izuchayutsya samye zlobodnevnye problemy, a vse ostal'noe osedaet v arhivah - na budushee. Edinstvennyi razumnyi vyhod - avtomaticheskaya obrabotka nablyudenii. Nekotoroe vremya nazad byli stat'i pro avtomaticheskuyu klassifikaciyu krivyh bleska peremennyh zvezd. Teper' - analiz spektrov. Nu a detali algoritma, tochnost' i t.d. - v stat'e.
Authors: E. Buchlin, V. Aletti, S. Galtier, M. Velli, G. Einaudi, J.-C. Vial
Commets: 10 pages, 9 figures Accepted for publication in Astronomy & Astrophysics
Ideya etoi stat'i, po-moemu, sil'no pereklikaetsya s temi, chto vyskazal Stiven Vol'fram (razrabotchik sistemy analiticheskii vychislenii Matematika) v svoei knige knige "A new kind of science", vyshedshei 14 maya 2002 goda (sm. zdes').
A v stat'e predlozheno smodelirovat' rasprostranenie vozmushenii vdol' magnitnyh petel' v Solnechnoi magnitosfere s pomosh'yu 3-mernogo kletochnogo avtomata. Podhod i rezul'taty ochen' interesnye.
Authors: V.R.Chitnis, P.N.Bhat
Commets: 26 pages, 9 ps figures, 1 eps figure, To appear in Experimental Astronomy
Cherenkovskie teleskopy registriruyut kak fotony sverhvysokih energii, tak i zaryazhennye chasticy (adrony). Obychno ih razdelyayut po forme poluchayushegosya izobrazheniya. No eto vozmozhno tol'ko v teleskopah stroyashih izobrazhenie. V stat'e predlozhen metod vydeleniya adronnyh sobytii po fluktuaciyam Cherenkovskogo izlucheniya. Eta stat'ya mozhet byt' interesna ne tol'ko astronomam.
Authors: Louise M. Griffiths and Charles H. Lineweaver
Commets: 47 pages, 20 figures, 4 tables, ApJ submitted, uses aastex.cls
V predpolozhenii, chto Vselennaya zapolnena holodnoi temnoi materiei + Lyambda-chlenom (\Lambda-CDM) avtory pytayutsya naiti sistematicheskie effekty po zavisimosti svoistv reliktovogo izlucheniya ot nomera mul'tipolya l, ot chastoty, ot galakticheskoi shiroty, instrumenta na kotorom velis' nablyudeniya, ot ispol'zuemogo istochnika kalibrovki i t.d. Byla naidena zavisimost' ot galakticheskoi shiroty na urovne bolee 2\sigma. Dlya isklyucheniya etogo effekta nado proizvesti primerno 2% redukciyu nablyudatel'nyh dannyh.
Authors: F. Patat
Commets: 12 pages, 11 figures; accepted for publication in A&A. Version wit full resolution figures available at http://ww Sut' stat'i ponyatna iz nazvaniya. Detali algoritma - v nei. Algoritm ispol'zuetsya v programme opredeleniya UBVRI yarkosti neba na observatorii Paranal (ESO, Chili).
astro-ph/0301548 Analiz dannyh LISA: identifikaciya i vydelenie istochnikov (LISA data analysis: Source identification and subtraction)
Authors: Neil J. Cornish & Shane L. Larson
Commets: 15 pages, 17 figures
LISA - kosmicheskaya gravitacionno-volnovaya antenna, kotoraya vozmozhno budet zapushena posle 2013 g. Avtory priveli interesnuyu analogiyu - etot detektor budet deistvovat' kak AM/FM-priemnik. Osnovnymi istochnikami dlya LISA budut dvoinye zvezdy. Amplitudnaya modulyaciya (AM) ih signala budet voznikat' iz-za izmeneniya polozheniya detektora (i ego diagrammy chuvstvitel'nosti v prostranstve). Chastotnaya modulyaciya (FM) voznikaet iz-za dvizheniya priemnika po orbite vokrug Solnca. Oba etih effekta "sputyvayut" signaly ot razlichnyh istochnikov. Avtory opisyvayut process ih otozhdestvleniya i razdeleniya.
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Authors: G. K. Skinner
Commets: To be published in Proceedings of the 22nd Moriond Astrophysics Meeting "The Gamma-Ray Universe", May 2002 Eds. A. Goldwurm, D. Neumann and J. Tran Thanh Van, The Gioi Publishers (Vietnam)
Eto obzor po teorii postroeniya izobrazhenii instrumentami (teleskopami) s kodiruyushimi maskami, kotorye shiroko ispol'zuyutsya v zhestkom rentgenovskom i gamma-diapazonah. Avtor utverzhdaet, chto eta teoriya ochen' prosta, slozhnosti poyavlyayutsya tol'ko pri rabote s real'nymi instrumentami. Rassmotreny instrumenty, ustanovlennye na observatorii INTEGRAL.
Authors: D. Maino, C. Burigana, F. Pasian
Commets: 17 pages, 6 figures, accepted for publication on New Astronomy
Dannye inogda teryayutsya pri peredache so sputnika na Zemlyu (po raznym prichinam). Kak eto mozhet povliyat' na rezul'taty obzora? Naprimer dlya rabotayushego WMAP ili dlya dozhidayushegosya sputnika Planck?
Authors: A. Ptak, R. Griffiths
Commets: 4 pages, 2 figures. To appear in the proceedings of Astronomical Data Analysis Software and Systems XII, October 2002, Baltimore, MD
Chto by tam ni govorili nedobrozhelateli, no amerikancy delayut ochen' mnogo, chtoby drugie mogli pol'zovat'sya ih zhe (amerikancev) dannymi s amerikanskih zhe (i ne tol'ko) sputnikov. XAssist - primer takoi sistemy. Ona razrabatyvaetsya v NASA i uzhe blizka k vyhodu na "shirokuyu astronomicheskuyu dorogu" analiza rentgenovskih nablyudenii. Sistema ispytana na dannyh Chandra i ROSAT HRI, chastichno podderzhivayutsya dannye XMM. V osnovnom sistema rasschitana na obrabotku nablyudenii nashei Galaktiki. V stat'e dano ee kratkoe opisanie. Posmotret' demonstraciyu i skachat' Xassist mozhno s saita www.xassist.org.
Authors: Klaus Maisinger, M.P. Hobson and A.N. Lasenby
Commets: 21 pages, 20 figures, submitted to MNRAS
Eta stat'ya budet polezna ne tol'ko astronomam. Tam est' i teoriya, i mnogo naglyadnyh primerov. Eto ne obzor, a skoree horoshee nebol'shoe uchebnoe posobie.
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