THE JUNE 2008 FLARE OF MARKARIAN 421 FROM OPTICAL TO TeV ENERGIES
| Title: | THE JUNE 2008 FLARE OF MARKARIAN 421 FROM OPTICAL TO TeV ENERGIES |
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| Authors: | DONNARUMMA I; VITTORINI V; VERCELLONE S; DEL MONTE E; FEROCI M; D'AMMANDO F; PACCIANI L; CHEN AW; TAVANI M; BULGARELLI A; GIULIANI A; LONGO F; PUCELLA G; ARGAN A; BARBIELLINI G; BOFFELLI F; CARAVEO P; CATTANEO PW; COCCO V; COSTA E; DE PARIS G; DI COCCO G; EVANGELISTA Y; FIORINI M; FROYSLAND T; FRUTTI M; FUSCHINO F; GALLI M; GIANOTTI F; LABANTI C; LAPSHOV I; LAZZAROTTO F; LIPARI P; MARISALDI M; MASTROPIETRO M; MEREGHETTI S; MORELLI E; MORSELLI A; PELLIZZONI A; PEROTTI F; PICOZZA P; PORROVECCHIO G; PREST M; RAPISARDA M; RAPPOLDI A; RUBINI A; SOFFITTA P; TRIFOGLIO M; TROIS A; VALLAZZA E; ZAMBRA A; ZANELLO D; PITTORI C; SANTOLAMAZZA P; VERRECCHIA F; GIOMMI P; COLAFRANCESCO S; SALOTTI L; VILLATA M; RAITERI CM; CHEN WP; EFIMOVA NV; JORDAN B; KONSTANTINOVA TS; KOPTELOVA E; KURTANIDZE OM; LARIONOV VM; ROS JA; SADUN AC; ANDERHUB H; ANTONELLI LA; ANTORANZ P; BACKES M; BAIXERAS C; BALESTRA S; BARRIO JA; BARTKO H; GONZALEZ JB; BECKER JK; BEDNAREK W; BERGER K; BERNARDINI E; BILAND A; BOCK RK; BONNOLI G; BORDAS P; TRIDON DB; BOSCH RAMON V; BRETZ T; BRITVITCH I; CAMARA M; CARMONA E; CHILINGARIAN A; COMMICHAU S; CONTRERAS JL; CORTINA J; COSTADO MT; COVINO S; CURTEF V; DAZZI F; DE ANGELIS A; DEL POZO ED; REYES RD; DE LOTTO B; DE MARIA M; DE SABATA F; MENDEZ CD; DOMINGUEZ A; DORNER D; ELSAESSER D; ERRANDO M; FERENC D; FERNANDEZ E; FIRPO R; FONSECA MV; FONT L; GALANTE N; LOPEZ RJG; GARCZARCZYK M; GAUG M; GOEBEL F; HADASCH D; HAYASHIDA M; HERRERO A; HOHNE MONCH D; HOSE J; HSU CC; HUBER S; JOGLER T; KRANICH D; LA BARBERA A; LAILLE A; LEONARDO E; LINDFORS E; LOMBARDI S; LOPEZ M; LORENZ E; MAJUMDAR P; MANEVA G; MANKUZHIYIL N; MANNHEIM K; MARASCHI L; MARTINEZ M; MAZIN D; MEUCCI M; MEYER M; MIRANDA JM; MIRZOYAN R; MOLDON J; MOLES M; MORALEJO A; NIETO D; NILSSON K; NINKOVIC J; OYA I; PAOLETTI R; PAREDES JM; PASANEN M; PAUSS F; PEGNA RG; PEREZ TORRES MA; PERSIC M; PERUZZO L; PRADA F; PUCHADES N; RAYMERS A; RHODE W; RIBO M; RICO J; RISSI M; ROBERT A; RUGAMER S; SAITO TY; SALVATI M; SANCHEZ CONDE M; SATALECKA K; SCAPIN V; SCHWEIZER T; SHAYDUK M; SHINOZAKI K; SHORE SN; SIDRO N; SIERPOWSKA BARTOSIK A; SILLANPAA A; SITAREK J; SOBCZYNSKA D; SPANIER F; STAMERRA A; STARK LS; TAKALO L; TAVECCHIO F; TEMNIKOV P; TESCARO D; TESHIMA M; TLUCZYKONT M; TORRES DF; TURINI N; VANKOV H; VENTURINI A; VITALE V; WAGNER RM; WITTEK W; ZABALZA V; ZANDANEL F; ZANIN R; ZAPATERO J; ACCIARI V; ALIU E; ARLEN T; BEILICKE M; BENBOW W; BRADBURY SM; BUCKLEY JH; BUGAEV V; BUTT Y; BYRUM K; CANNON A; CESARINI A; CHOW YC; CIUPIK L; COGAN P; COLIN P; CUI W; DANIEL MK; DICKHERBER R; DUKE C; ERGIN T; FEGAN SJ; FINLEY JP; FINNEGAN G; FORTIN P; FURNISS A; GALL D; GILLANDERS GH; GUENETTE R; GYUK G; GRUBE J; HANNA D; HOLDER J; HORAN D; HUI CM; HUMENSKY TB; IMRAN A; KAARET P; KARLSSON N; KERTZMAN M; KIEDA D; KILDEA J; KONOPELKO A; KRAWCZYNSKI H; KRENNRICH F; LANG MJ; LEBOHEC S; MAIER G; MCCANN A; MCCUTCHEON M; MILOVANOVIC A; MORIARTY P; NAGAI T; ONG RA; OTTE AN; PANDEL D; PERKINS JS; PICHEL A; POHL M; RAGAN K; REYES LC; REYNOLDS PT; ROACHE E; ROSE HJ; SCHROEDTER M; SEMBROSKI GH; SMITH AW; STEELE D; SWORDY SP; THEILING M; TONER JA; VALCARCEL L; VARLOTTA A; WAKELY SP; WARD JE; WEEKES TC; WEINSTEIN A; WILLIAMS DA; WISSEL S; WOOD M; ZITZER B.; BASTIERI, DENIS; DORO, MICHELE; MARIOTTI, MOSE'; PASCOLI, DONATELLA; PRANDINI, ELISA; SAGGION, ANTONIO; SARTORI, PAOLO; SCALZOTTO, VILLI MARIO |
| Contributors: | Donnarumma, I; Vittorini, V; Vercellone, S; DEL MONTE, E; Feroci, M; D'Ammando, F; Pacciani, L; Chen, Aw; Tavani, M; Bulgarelli, A; Giuliani, A; Longo, F; Pucella, G; Argan, A; Barbiellini, G; Boffelli, F; Caraveo, P; Cattaneo, Pw; Cocco, V; Costa, E; DE PARIS, G; DI COCCO, G; Evangelista, Y; Fiorini, M; Froysland, T; Frutti, M; Fuschino, F; Galli, M; Gianotti, F; Labanti, C; Lapshov, I; Lazzarotto, F; Lipari, P; Marisaldi, M; Mastropietro, M; Mereghetti, S; Morelli, E; Morselli, A; Pellizzoni, A; Perotti, F; Picozza, P; Porrovecchio, G; Prest, M; Rapisarda, M; Rappoldi, A; Rubini, A; Soffitta, P; Trifoglio, M; Trois, A; Vallazza, E; Zambra, A; Zanello, D; Pittori, C; Santolamazza, P; Verrecchia, F; Giommi, P; Colafrancesco, S; Salotti, L; Villata, M; Raiteri, Cm; Chen, Wp; Efimova, Nv; Jordan, B; Konstantinova, T; Koptelova, E; Kurtanidze, Om; Larionov, Vm; Ros, Ja; Sadun, Ac; Anderhub, H; Antonelli, La; Antoranz, P; Backes, M; Baixeras, C; Balestra, S; Barrio, Ja; Bartko, H; Bastieri, Deni; Gonzalez, Jb; Becker, Jk; Bednarek, W; Berger, K; Bernardini, E; Biland, A; Bock, Rk; Bonnoli, G; Bordas, P; Tridon, Db; BOSCH RAMON, V; Bretz, T; Britvitch, I; Camara, M; Carmona, E; Chilingarian, A; Commichau, S; Contreras, Jl; Cortina, J; Costado, Mt; Covino, S; Curtef, V |
| Publication Year: | 2009 |
| Collection: | Padua Research Archive (IRIS - Università degli Studi di Padova) |
| Description: | We present optical, X-ray, high-energy ((sic) 30 GeV) and very high energy ((sic) 100 GeV; VHE) observations of the high-frequency peaked blazar Mrk 421 taken between 2008 May 24 and June 23. A high-energy gamma-ray signal was detected by AGILE with root TS = 4.5 between June 9 and 15, with F(E > 100 MeV) = 42(-12)(+14) x 10(-8) photons cm(-2) s(-1). This flaring state is brighter than the average flux observed by EGRET by a factor of similar to 3, but still consistent with the highest EGRET flux. In hard X-rays (20-60 keV) SuperAGILE resolved a five-day flare (June 9-15) peaking at similar to 55 mCrab. SuperAGILE, RXTE/ASM and Swift/BAT data show a correlated flaring structure between soft and hard X-rays. Hints of the same flaring behavior are also detected in the simultaneous optical data provided by the GASP-WEBT. A Swift/XRT observation near the flaring maximum revealed the highest 2-10 keV flux ever observed from this source, of 2.6 x 10(-9) erg cm(-2) s(-1) (i.e. > 100 mCrab). A peak synchrotron energy of similar to 3 keV was derived, higher than typical values of similar to 0.5-1 keV. VHE observations with MAGIC and VERITAS between June 6 and 8 showed the flux peaking in a bright state, well correlated with the X-rays. This extraordinary set of simultaneous data, covering a 12-decade spectral range, allowed for a deep analysis of the spectral energy distribution as well as of correlated light curves. The gamma-ray flare can be interpreted within the framework of the synchrotron self-Compton model in terms of a rapid acceleration of leptons in the jet. |
| Document Type: | article in journal/newspaper |
| Language: | unknown |
| Relation: | info:eu-repo/semantics/altIdentifier/wos/WOS:000263148600004; volume:691; firstpage:L13; lastpage:L19; journal:THE ASTROPHYSICAL JOURNAL LETTERS; https://hdl.handle.net/11577/2437742 |
| DOI: | 10.1088/0004-637X/691/1/L13 |
| Availability: | https://hdl.handle.net/11577/2437742; https://doi.org/10.1088/0004-637X/691/1/L13 |
| Rights: | info:eu-repo/semantics/openAccess ; license:Accesso gratuito |
| Accession Number: | edsbas.6BAF00D9 |
| Database: | BASE |