J/A+A/578/A22ivo://CDS.VizieR/J/A+A/578/A22doi:10.26093/cds/vizier.35780022CDSAleksic J.Ansoldi S.Antonelli L.A.Antoranz P.Babic A.Bangale P.,de Almeida U.BarresBarrio J.A.Gonzalez J.BecerraBednarek W.,Bernardini E.Biasuzzi B.Biland A.Blanch O.Boller A.Bonnefoy S.,Bonnoli G.Borracci F.Bretz T.Carmona E.Carosi A.Colin P.,Colombo E.Contreras J.L.Cortina J.Covino S.Da Vela P.Dazzi F.,De Angelis A.De Caneva G.De Lotto B.de Ona Wilhelmi E.,Delgado Mendez C.Dominis Prester D.Dorner D.Doro M.Einecke S.,Eisenacher D.Elsaesser D.Fonseca M.V.Font L.Frantzen K.Fruck C.,Galindo D.Garcia Lopez R.J.Garczarczyk M.Garrido Terrats D.Gaug M.,Godinovic N.Gonzalez Munoz A.Gozzini S.R.Hadasch D.Hanabata Y.,Hayashida M.Herrera J.Hildebrand D.Hose J.Hrupec D.Hughes G.,Idec W.Kadenius V.Kellermann H.Knoetig M.L.Kodani K.Konno Y.,Krause J.Kubo H.Kushida J.La Barbera A.Lelas D.Lewandowska N.,Lindfors E.Lombardi S.Lopez M.Lopez-Coto R.Lopez-Oramas A.,Lorenz E.Lozano I.Makariev M.Mallot K.Maneva G.Mankuzhiyil N.,Mannheim K.Maraschi L.Marcote B.Mariotti M.Martinez M.Mazin D.,Menzel U.Miranda J.M.Mirzoyan R.Moralejo A.Munar-Adrover P.,Nakajima D.Niedzwiecki A.Nilsson K.Nishijima K.Noda K.Orito R.,Overkemping A.Paiano S.Palatiello M.Paneque D.Paoletti R.,Paredes J.M.Paredes-Fortuny X.Persic M.Prada Moroni P.G.Prandini E.,Puljak I.Reinthal R.Rhode W.Ribo M.Rico J.Rodriguez Garcia J.,Rugamer S.Saito T.Saito K.Satalecka K.Scalzotto V.Scapin V.,Schultz C.Schweizer T.Sun S.Shore S.N.Sillanpaa A.Sitarek J.,Snidaric I.Sobczynska D.Spanier F.Stamatescu V.Stamerra A.,Steinbring T.Steinke B.Storz J.Strzys M.Takalo L.Takami H.,Tavecchio F.Temnikov P.Terzic T.Tescaro D.Teshima M.Thaele J.,Tibolla O.Torres D.F.Toyama T.Treves A.Uellenbeck M.Vogler P.,Zanin R.(The MAGIC Collaboration),Archambault S.Archer A.Beilicke M.Benbow W.Berger K.Bird R.,Biteau J.Buckley J.H.Bugaev V.Cerruti M.Chen X.Ciupik L.,Collins-Hughes E.Cui W.Eisch J.D.Falcone A.Feng Q.Finley J.P.,Fortin P.Fortson L.Furniss A.Galante N.Gillanders G.H.Griffin S.,Gyuk G.Hakansson N.Holder J.Johnson C.A.Kaaret P.Kar P.,Kertzman M.Kieda D.Lang M.J.McArthur S.McCann A.Meagher K.,Millis J.Moriarty P.Ong R.A.Otte A.N.Perkins J.S.Pichel A.,Pohl M.Popkow A.Prokoph H.Pueschel E.Ragan K.Reyes L.C.,Reynolds P.T.Richards G.T.Roache E.Rovero A.C.Sembroski G.H.,Shahinyan K.Staszak D.Telezhinsky I.Tucci J.V.Tyler J.Varlotta A.,Wakely S.P.Welsing R.Wilhelm A.Williams D.A.,(The VERITAS Collaboration),Buson S.Finke J.Villata M.Raiteri C.Aller H.D.Aller M.F.,Cesarini A.Chen W.P.Gurwell M.A.Jorstad S.G.Koptelova E.,Kurtanidze O.M.Laehteenmaeki A.Larionov V.M.Larionova E.G.Lin H.C.,Moody J.W.Morozova D.A.Marscher A.P.Max-Moerbeck W.,Nikolashvili M.G.Perri M.Readhead A.C.S.Richards J.L.Ros J.A.,Sadun A.C.Sakamoto T.Smith P.S.Tornikoski M.Troitsky I.S.,Wehrle A.E.(External Collaborators)2017-06-19T07:57:44Z2015-05-27T05:39:37ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frmarkarian-galaxiesgalaxiesspectroscopyactive-galactic-nucleibl-lacertae-objectsgamma-ray-astronomyspectrophotometryastronomical-modelsA flare from the TeV blazar Mrk 421, occurring in March 2010, was observed for 13 consecutive days from radio to very high energy (VHE; E>100GeV) gamma-rays with MAGIC, VERITAS, Whipple, FermiLAT, MAXI, RXTE, Swift, GASP-WEBT, and several optical and radio telescopes. We model the day-scale SEDs with one-zone and two-zone synchrotron self-Compton (SSC) models, investigate the physical parameters, and evaluate whether the observed broadband SED variability can be associated to variations in the relativistic particle population. Flux variability was remarkable in the X-ray and VHE bands while it was minor or not significant in the other bands. The one-zone SSC model can describe reasonably well the SED of each day for the 13 consecutive days. This flaring activity is also very well described by a two-zone SSC model, where one zone is responsible for the quiescent emission while the other smaller zone, which is spatially separated from the first one, contributes to the daily-variable emission occurring in X-rays and VHE gamma-rays. Both the one-zone SSC and the two-zone SSC models can describe the daily SEDs via the variation of only four or five model parameters, under the hypothesis that the variability is associated mostly to the underlying particle population. This shows that the particle acceleration and cooling mechanism producing the radiating particles could be the main one responsible for the broadband SED variations during the flaring episodes in blazars. The two-zone SSC model provides a better agreement to the observed SED at the narrow peaks of the low- and high-energy bumps during the highest activity, although the reported one-zone SSC model could be further improved by the variation of the parameters related to the emitting region itself ({delta}, B and R), in addition to the parameters related to the particle population.2015A&A...578A..22Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/578/A22CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/545/A117 : Monitoring of Mrk 421 at 15 and 24 GHz (Lico+, 2012)J/A+A/559/A75 : 43GHz observation of the blazar Mrk 421 (Blasi+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/578/A22https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/578/A22http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/578/A22https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/578/A22https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/578/A22http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/578/A22GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapGamma-raydefaultJ/A+A/578/A22/asmLight Curve from RXTE-ASM 2-10keVe_Time[0.5] Error of timedstat.error;time.epochfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTimeTime in MJDdtime.epochdoubleCRCount ratect/sphot.count;em.X-raydoublee_CRError of count ratect/sstat.errordoubleJ/A+A/578/A22/fdens1Light Curve from Swift-UVOT, Bradford, ROVOR, NMSkies, GASP and GRTrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintInstInstrument (1)meta.id;instrcharBandObserved band (1)instr.bandpasscharTimeTime in MJDdtime.epochdoubleFluxD[8/22] Flux densitymJyphot.fluxfloate_Time[0/0.005] Error of timedstat.error;time.epochfloate_FluxD[0.1/3.2] Error of flux densitymJystat.errorfloatJ/A+A/578/A22/polLight Curve from Steward, St Petersburg and Crimean (polarization degree)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObsObservatory (1)meta.id;instr.obstycharTimeTime in MJDdtime.epochdoublePol[3/7] Polarization degree%phys.polarizationfloate_Pol[0.02/0.42] Error of polarization degree%stat.errorfloatEVPA[110/132] Electric vector polarization angledegpos.posAng;phys.polarizationfloate_EVPA[0.1/2.5] Error of EVPAdegstat.errorfloatJ/A+A/578/A22/fluxesLight Curve from MAGIC, VERITAS, Whipple, Fermi-LAT, Swift-BAT, MAXI, Swift-XRT and RXTE-PCATimeTime in MJDdtime.epochdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintInstInstrument (1)meta.id;instrcharBandObserved band (1)instr.bandpasscharFluxObserved fluxcm**-2.s**-1phot.fluxdoublee_Time[0/1] Error of timedstat.error;time.epochfloate_FluxError of fluxcm**-2.s**-1stat.error;phot.fluxdoubleJ/A+A/578/A22/fdens2Light Curve from SMA, Metsahovi, OVRO and UMRAOObsObservatory (1)meta.id;instr.obstycharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFreq[14.5/225] Observed frequency (1)GHzem.freqfloatTimeTime in MJDdtime.epochdoubleFluxD[0.2/0.5] Flux density at FreqJyphot.fluxfloate_FluxD[0.01/0.07] Error of flux densityJystat.errorfloatJ/A+A/578/A22/SEDsSEDs observed at MJD55265--55277recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTimeMJD date of observationdtime.epochintnullableFreq[1.4e+10/1.e+27] FrequencyHzem.freqdoublee_FreqLow error of frequencyHzstat.errordoubleE_FreqHigh error of frequencyHzstat.error;stat.maxdoubleEFluxEnergy fluxmW.m**-2phot.fluxdoublee_EFluxLow error of energy fluxmW.m**-2stat.errordoubleE_EFluxHigh error of energy fluxmW.m**-2stat.error;stat.maxdouble