2019MNRAS.490.2284A

Query : 2019MNRAS.490.2284A

2019MNRAS.490.2284A - Mon. Not. R. Astron. Soc., 490, 2284-2299 (2019/December-1)

Testing emission models on the extreme blazar 2WHSP J073326.7+515354 detected at very high energies with the MAGIC telescopes.

ACCIARI V.A., ACCIARI V.A., ANSOLDI S., ANTONELLI L.A., ARBET ENGELS A., BAACK D., BABIC A., BANERJEE B., BARRES DE ALMEIDA U., BARRIO J.A., BECERRA GONZALEZ J., BEDNAREK W., BELLIZZI L., BERNARDINI E., BERTI A., BESENRIEDER J., BHATTACHARYYA W., BIGONGIARI C., BILAND A., BLANCH O., BONNOLI G., BOSNJAK Z., BUSETTO G., CAROSI R., CERIBELLA G., CERRUTI M., CHAI Y., CHILINGARYAN A., CIKOTA S., COLAK S.M., COLIN U., COLOMBO E., CONTRERAS J.L., CORTINA J., COVINO S., D'ELIA V., DA VELA P., DAZZI F., DE ANGELIS A., DE LOTTO B., DELFINO M., DELGADO J., DEPAOLI D., DI PIERRO F., DI VENERE L., DO SOUTO ESPINEIRA E., DOMINIS PRESTER D., DONINI A., DORNER D., DORO M., ELSAESSER D., FALLAH RAMAZANI V., FATTORINI A., FERRARA G., FIDALGO D., FOFFANO L., FONSECA M.V., FONT L., FRUCK C., FUKAMI S., GARCIA LOPEZ R.J., GARCZARCZYK M., GASPARYAN S., GAUG M., GIGLIETTO N., GIORDANO F., GODINOVIC N., GREEN D., GUBERMAN D., HADASCH D., HAHN A., HERRERA J., HOANG J., HRUPEC D., HUTTEN M., INADA T., INOUE S., ISHIO K., IWAMURA Y., JOUVIN L., KERSZBERG D., KUBO H., KUSHIDA J., LAMASTRA A., LELAS D., LEONE F., LINDFORS E., LOMBARDI S., LONGO F., LOPEZ M., LOPEZ-COTO R., LOPEZ-ORAMAS A., LOPORCHIO S., MACHADO DE OLIVEIRA FRAGA B., MAGGIO C., MAJUMDAR P., MAKARIEV M., MALLAMACI M., MANEVA G., MANGANARO M., MANNHEIM K., MARASCHI L., MARIOTTI M., MARTINEZ M., MAZIN D., MICANOVIC S., MICELI D., MINEV M., MIRANDA J.M., MIRZOYAN R., MOLINA E., MORALEJO A., MORCUENDE D., MORENO V., MORETTI E., MUNAR-ADROVER P., NEUSTROEV V., NIGRO C., NILSSON K., NINCI D., NISHIJIMA K., NODA K., NOGUES L., NOZAKI S., PAIANO S., PALACIO J., PALATIELLO M., PANEQUE D., PAOLETTI R., PAREDES J.M., PENIL P., PERESANO M., PERSIC M., PRADA MORONI P.G., PRANDINI E., PULJAK I., RHODE W., RIBO M., RICO J., RIGHI C., RUGLIANCICH A., SAHA L., SAHAKYAN N., SAITO T., SAKURAI S., SATALECKA K., SCHMIDT K., SCHWEIZER T., SITAREK J., SNIDARIC I., SOBCZYNSKA D., SOMERO A., STAMERRA A., STROM D., STRZYS M., SUDA Y., SURIC T., TAKAHASHI M., TAVECCHIO F., TEMNIKOV P., TERZIC T., TESHIMA M., TORRES-ALBA N., TOSTI L., VAGELLI V., VAN SCHERPENBERG J., VANZO G., VAZQUEZ ACOSTA M., VIGORITO C.F., VITALE V., VOVK I., WILL M., ZARIC D., ASANO K., ASANO K., D'AMMANDO F. and CLAVERO R.

Abstract (from CDS):

Extreme high-energy-peaked BL Lac objects (EHBLs) are an emerging class of blazars. Their typical two-hump-structured spectral energy distribution (SED) peaks at higher energies with respect to conventional blazars. Multiwavelength (MWL) observations constrain their synchrotron peak in the medium to hard X-ray band. Their gamma-ray SED peaks above the GeV band, and in some objects it extends up to several TeV. Up to now, only a few EHBLs have been detected in the TeV gamma-ray range. In this paper, we report the detection of the EHBL 2WHSP J073326.7+515354, observed and detected during 2018 in TeV gamma rays with the MAGIC telescopes. The broad-band SED is studied within an MWL context, including an analysis of the Fermi-LAT data over 10 yr of observation and with simultaneous Swift-XRT, Swift-UVOT, and KVA data. Our analysis results in a set of spectral parameters that confirms the classification of the source as an EHBL. In order to investigate the physical nature of this extreme emission, different theoretical frameworks were tested to model the broad-band SED. The hard TeV spectrum of 2WHSP J073326.7+515354 sets the SED far from the energy equipartition regime in the standard one-zone leptonic scenario of blazar emission. Conversely, more complex models of the jet, represented by either a two-zone spine-layer model or a hadronic emission model, better represent the broad-band SED.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): galaxies: active - BL Lacertae objects: general - gamma-rays: galaxies - X-rays: general

Simbad objects: 7

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Number of rows : 7
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 RX J0232.8+2017 BLL 02 32 48.6148874688 +20 17 17.486717388     18.00 13.96   ~ 387 1
2 QSO B0347-121 BLL 03 49 23.1862105584 -11 59 27.366035532   18.74 18.2 17.46   ~ 245 1
3 RX J0710.5+5908 BLL 07 10 30.0683697888 +59 08 20.371772544   17.38 16.52 15.1   ~ 249 1
4 NVSS J073326+515355 BLL 07 33 26.7912880992 +51 53 55.910791896           ~ 64 0
5 PMN J1103-2329 BLL 11 03 37.6150845072 -23 29 31.203773520   17.00 16.55 16.61   ~ 405 1
6 Z 184-50 BLL 11 04 27.3140835504 +38 12 31.798495872   13.50 12.90 8.31   ~ 2841 1
7 Z 225-7 BLL 16 53 52.21668403 +39 45 36.6088754 14.09 14.15 13.29 8.26   ~ 2304 2

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