VHE gamma-ray discovery and multiwavelength study of the blazar 1ES 2322-409

Journal article


Publication Details

Author(s): Abdalla H, Aharonian F, Benkhali FA, Anguner EO, Arakawa M, Arcaro C, Armand C, Arrieta M, Backes M, Barnard M, Becherini Y, Tjus JB, Berge D, Bernhard S, Bernloehr K, Blackwell R, Bottcher M, Boisson C, Bolmont J, Bonnefoy S, Bordas P, Bregeon J, Brun F, Brun P, Bryan M, Büchele M, Bulik T, Bylund T, Capasso M, Caroff S, Carosi A, Casanova S, Cerruti M, Chakraborty N, Chandra S, Chaves RCG, Chen A, Colafrancesco S, Condon B, Davids ID, Dei C, Devin J, Dewilt P, Dirson L, Djannati-Atai A, Dmytriiev A, Donath A, Drury LO, Dyks J, Egberts K, Emery G, Ernenwein JP, Eschbach S, Fegan S, Fiasson A, Fontaine G, Funk S, Fuessling M, Gabici S, Gallant YA, Garrigoux T, Gate F, Giavitto G, Glawion D, Glicenstein JF, Gottschall D, Grondin MH, Hahn J, Haupt M, Heinzelmann G, Henri G, Hermann G, Hinton JA, Hofmann W, Hoischen C, Holch TL, Holler M, Horns D, Huber D, Iwasaki H, Jacholkowska A, Jamrozy M, Jankowsky D, Jankowsky F, Jouvin L, Jung-Richardt I, Kastendieck MA, Katarzynski K, Katsuragawa M, Katz U, Kerszberg D, Khangulyan D, Khelifi B, King J, Klepser S, Kluzniak W, Komin N, Kosack K, Krakau S, Kraus M, Kruger RR, Lamanna G, Lau J, Lefaucheur J, Lemiere A, Lemoine-Goumard M, Lenain JP, Leser E, Lohse T, Lorentz M, Lopez-Coto R, Lypova I, Malyshev D, Marandon V, Marcowith A, Mariaud C, Marti-Devesa G, Marx R, Maurin G, Meintjes PJ, Mitche AMW, Moderski R, Mohamed M, Mohrmann L, Moulin E, Murach T, Nakashima S, De Naurois M, Ndiyavala H, Niederwanger F, Niemiec J, Oakes L, O'Brien P, Odaka H, Ohm S, Ostrowski M, Oya I, Padovani M, Panter M, Parsons RD, Perennes C, Petrucci PO, Peyaud B, Piel Q, Pita S, Poireau V, Noel AP, Prokhorov DA, Prokoph H, Puehlhofer G, Punch M, Quirrenbach A, Raab S, Rauth R, Reimer A, Reimer O, Renaud M, Rieger F, Rinchiuso L, Romoli C, Rowell G, Rudak B, Ruiz-Velasco E, Sahakian V, Saito S, Sanchez DA, Santangelo A, Sasaki M, Schlickeiser R, Schussler F, Schulz A, Schwanke U, Schwemmer S, Seglar-Arroyo M, Senniappan M, Seyffert AS, Shafi N, Shilon I, Shiningayamwe K, Simoni R, Sinha A, Sol H, Spanier F, Specovius A, Spir-Jacob M, Stawarz L, Steenkamp R, Stegmann C, Steppa C, Sushch I, Takahashi T, Tavernet JP, Tavernier T, Taylor AM, Terrier R, Tibaldo L, Tiziani D, Tluczykont M, Trichard C, Tsirou M, Tsuji N, Tuffs R, Uchiyama Y, Van Der Walt DJ, van Eldik C, Van Rensburg C, Van Soelen B, Vasileiadis G, Veh J, Venter C, Viana A, Vincent P, Vink J, Voisin F, Voelk HJ, Vuillaume T, Wadiasingh Z, Wagner SJ, Wagner P, Wagner RM, White R, Wierzcholska A, Wörnlein A, Yang R, Zaborov D, Zacharias M, Zanin R, Zdziarski AA, Zech A, Zefi F, Ziegler A, Zorn J, Zywucka N
Journal: Monthly Notices of the Royal Astronomical Society
Publication year: 2019
Volume: 482
Journal issue: 3
Pages range: 3011-3022
ISSN: 0035-8711
eISSN: 1365-2966


Abstract

A hotspot at a position compatible with the BL. Lac object 1ES 2322-409 was serendipitously detected with H.E.S.S. during observations performed in 2004 and 2006 on the blazar PKS 2316-423. Additional data on 1ES 2322-409 were taken in 2011 and 2012, leading to a total live-time of 22.3 h. Point-like very-high-energy (VHE; E > 100 GeV) gamma-ray emission is detected from a source centred on the IFS 2322-409 position, with an excess of 116.7 events at a significance of 6.0 sigma. The average VHE gamma-ray spectrum is well described with a power law with a photon index Gamma = 3.40 +/- 0.66(stat) +/- 0.20(sys) and an integral flux Phi(E > 200 GeV) = (3.11 +/- 0.71(stat) 0.62(sys)) x 10(-2)cm(-2)s(-1), which corresponds to 1.1 per cent of the Crab nebula flux above 200 GeV. Multiwavelength data obtained with Fermi LAT, Swift XRT and UVOT, RXTE PCA, ATOM, and additional data from WISE, GROND, and Catalina are also used to characterize the broad-band non-thermal emission of lES 2322-409. The multiwavelength behaviour indicates day-scale variability. Swift UVOT and XRT data show strong variability at longer scales. A spectral energy distribution (SED) is built from contemporaneous observations obtained around a high state identified in Swift data. A modelling of the SED is performed with a stationary homogeneous one-zone synchrotronself-Compton leptonic model. The redshift of the source being unknown, two plausible values were tested for the modelling. A systematic scan of the model parameters space is performed, resulting in a well-constrained combination of values providing a good description of the broad-band behaviour of 1ES 2322-409.


FAU Authors / FAU Editors

Büchele, Matthias
Lehrstuhl für Physik
Eschbach, Stefan
Lehrstuhl für Physik
Funk, Stefan Prof. Dr.
Lehrstuhl für Physik
Jankowsky, David
Lehrstuhl für Physik
Jung-Richardt, Ira PD Dr.
Lehrstuhl für Physik
Katz, Uli Prof. Dr.
Lehrstuhl für Experimentalphysik (Astroteilchenphysik)
Mohrmann, Lars Dr.
Lehrstuhl für Physik
Raab, Susanne
Lehrstuhl für Physik
Sasaki, Manami Prof. Dr.
Professur für Multiwellenlängenastronomie
Shilon, Idan
Lehrstuhl für Physik
Specovius, Andreas
Professur für Experimentalphysik
Tiziani, Domenico
Professur für Experimentalphysik
van Eldik, Christopher Prof. Dr.
Professur für Experimentalphysik
Veh, Johannes Dr.
Professur für Experimentalphysik
Wörnlein, André
Professur für Experimentalphysik
Ziegler, Alexander
Professur für Experimentalphysik


How to cite

APA:
Abdalla, H., Aharonian, F., Benkhali, F.A., Anguner, E.O., Arakawa, M., Arcaro, C.,... Zywucka, N. (2019). VHE gamma-ray discovery and multiwavelength study of the blazar 1ES 2322-409. Monthly Notices of the Royal Astronomical Society, 482(3), 3011-3022. https://dx.doi.org/10.1093/mnras/sty2686

MLA:
Abdalla, H., et al. "VHE gamma-ray discovery and multiwavelength study of the blazar 1ES 2322-409." Monthly Notices of the Royal Astronomical Society 482.3 (2019): 3011-3022.

BibTeX: 

Last updated on 2019-26-07 at 09:33