Hess and fermi-lat discovery of γ-rays from the blazar 1ES 1312-423

A. Abramowski; F. Acero; F. Aharonian; A. G. Akhperjanian; E. Angüner; G. Anton; S. Balenderan; A. Balzer; A. Barnacka; Y. Becherini; J. Becker Tjus; K. Bernlöhr; E. Birsin; E. Bissaldi; J. Biteau; C. Boisson; J. Bolmont; P. Bordas; J. Brucker; F. Brun; P. Brun; T. Bulik; S. Carrigan; S. Casanova; M. Cerruti; P. M. Chadwick; R. Chalme-Calvet; R. C G Chaves; A. Cheesebrough; M. Chrétien; S. Colafrancesco; G. Cologna; J. Conrad; C. Couturier; M. Dalton; M. K. Daniel; I. D. Davids; B. Degrange; C. Deil; P. deWilt; H. J. Dickinson; A. Djannati-Ataï; W. Domainko; L. O C Drury; G. Dubus; K. Dutson; J. Dyks; M. Dyrda; T. Edwards; K. Egberts; P. Eger; P. Espigat; C. Farnier; S. Fegan; F. Feinstein; M. V. Fernandes; D. Fernandez; A. Fiasson; G. Fontaine; A. Förster; M. Fuling; M. Gajdus; Y. A. Gallant; T. Garrigoux; H. Gast; B. Giebels; J. F. Glicenstein; D. Göring; M. H. Grondin; M. Grudzínska; S. Häffner; J. D. Hague; J. Hahn; J. Harris; G. Heinzelmann; G. Henri; G. Hermann; O. Hervet; A. Hillert; J. A. Hinton; W. Hofmann; P. Hofverberg; M. Holler; D. Horns; A. Jacholkowska; C. Jahn; M. Jamrozy; M. Janiak; F. Jankowsky; I. Jung; M. A. Kastendieck; K. Katarzyński; U. Katz; S. Kaufmann; B. Khélifi; M. Kieffer; S. Klepser; D. Klochkov; W. Kluźniak; T. Kneiske; D. Kolitzus; N. Komin; K. Kosack; S. Krakau; F. Krayzel; P. P. Krüger; H. Laffon; G. Lamanna; J. Lefaucheur; M. Lemoine-Goumard; J. P. Lenain; D. Lennarz; T. Lohse; A. Lopatin; C. C. Lu; V. Marandon; A. Marcowith; G. Maurin; N. Maxted; M. Mayer; T. J L McComb; M. C. Medina; J. Méhault; U. Menzler; M. Meyer; R. Moderski; M. Mohamed; E. Moulin; T. Murach; C. L. Naumann; M. de Naurois; D. Nedbal; J. Niemiec; S. J. Nolan; L. Oakes; S. Ohm; E. de Oña Wilhelmi; B. Opitz; M. Ostrowski; I. Oya; M. Panter; R. D. Parsons; M. Paz Arribas; N. W. Pekeur; G. Pelletier; J. Perez; P. O. Petrucci; B. Peyaud; S. Pita; H. Poon; G. Pühlhofer; M. Punch; A. Quirrenbach; S. Raab; M. Raue; A. Reimer; O. Reimer; M. Renaud; R. de los Reyes; F. Rieger; L. Rob; S. Rosier-Lees; G. Rowell; B. Rudak; C. B. Rulten; V. Sahakian; D. A. Sanchez; A. Santangelo; R. Schlickeiser; F. Schüssler; A. Schulz; U. Schwanke; S. Schwarzburg; S. Schwemmer; H. Sol; G. Spengler; F. Spieß; L. Stawarz; R. Steenkamp; C. Stegmann; F. Stinzing; K. Stycz; I. Sushch; A. Szostek; J. P. Tavernet; R. Terrier; M. Tluczykont; C. Trichard; K. Valerius; C. van Eldik; G. Vasileiadis; C. Venter; A. Viana; P. Vincent; H. J. Völk; F. Volpe; M. Vorster; S. J. Wagner; P. Wagner; M. Ward; M. Weidinger; R. White; A. Wierzcholska; P. Willmann; A. Wörnlein; D. Wouters; M. Zacharias; A. Zajczyk; A. A. Zdziarski; A. Zech; H. S. Zechlin; J. S. Perkins; R. Ojha; J. Stevens; P. G. Edwards; M. Kadler

doi:10.1093/mnras/stt1081

Hess and fermi-lat discovery of γ-rays from the blazar 1ES 1312-423

A. Abramowski, F. Acero, F. Aharonian, A. G. Akhperjanian, E. Angüner, G. Anton, S. Balenderan, A. Balzer, A. Barnacka, Y. Becherini, J. Becker Tjus, K. Bernlöhr, E. Birsin, E. Bissaldi, J. Biteau, C. Boisson, J. Bolmont, P. Bordas, J. Brucker, F. BrunP. Brun, T. Bulik, S. Carrigan, S. Casanova, M. Cerruti, P. M. Chadwick, R. Chalme-Calvet, R. C G Chaves, A. Cheesebrough, M. Chrétien, S. Colafrancesco, G. Cologna, J. Conrad, C. Couturier, M. Dalton, M. K. Daniel, I. D. Davids, B. Degrange, C. Deil, P. deWilt, H. J. Dickinson, A. Djannati-Ataï, W. Domainko, L. O C Drury, G. Dubus, K. Dutson, J. Dyks, M. Dyrda, T. Edwards, K. Egberts, P. Eger, P. Espigat, C. Farnier, S. Fegan, F. Feinstein, M. V. Fernandes, D. Fernandez, A. Fiasson, G. Fontaine, A. Förster, M. Fuling, M. Gajdus, Y. A. Gallant, T. Garrigoux, H. Gast, B. Giebels, J. F. Glicenstein, D. Göring, M. H. Grondin, M. Grudzínska, S. Häffner, J. D. Hague, J. Hahn, J. Harris, G. Heinzelmann, G. Henri, G. Hermann, O. Hervet, A. Hillert, J. A. Hinton, W. Hofmann, P. Hofverberg, M. Holler, D. Horns, A. Jacholkowska, C. Jahn, M. Jamrozy, M. Janiak, F. Jankowsky, I. Jung, M. A. Kastendieck, K. Katarzyński, U. Katz, S. Kaufmann, B. Khélifi, M. Kieffer, S. Klepser, D. Klochkov, W. Kluźniak, T. Kneiske, D. Kolitzus, N. Komin, K. Kosack, S. Krakau, F. Krayzel, P. P. Krüger, H. Laffon, G. Lamanna, J. Lefaucheur, M. Lemoine-Goumard, J. P. Lenain, D. Lennarz, T. Lohse, A. Lopatin, C. C. Lu, V. Marandon, A. Marcowith, G. Maurin, N. Maxted, M. Mayer, T. J L McComb, M. C. Medina, J. Méhault, U. Menzler, M. Meyer, R. Moderski, M. Mohamed, E. Moulin, T. Murach, C. L. Naumann, M. de Naurois, D. Nedbal, J. Niemiec, S. J. Nolan, L. Oakes, S. Ohm, E. de Oña Wilhelmi, B. Opitz, M. Ostrowski, I. Oya, M. Panter, R. D. Parsons, M. Paz Arribas, N. W. Pekeur, G. Pelletier, J. Perez, P. O. Petrucci, B. Peyaud, S. Pita, H. Poon, G. Pühlhofer, M. Punch, A. Quirrenbach, S. Raab, M. Raue, A. Reimer, O. Reimer, M. Renaud, R. de los Reyes, F. Rieger, L. Rob, S. Rosier-Lees, G. Rowell, B. Rudak, C. B. Rulten, V. Sahakian, D. A. Sanchez, A. Santangelo, R. Schlickeiser, F. Schüssler, A. Schulz, U. Schwanke, S. Schwarzburg, S. Schwemmer, H. Sol, G. Spengler, F. Spieß, L. Stawarz, R. Steenkamp, C. Stegmann, F. Stinzing, K. Stycz, I. Sushch, A. Szostek, J. P. Tavernet, R. Terrier, M. Tluczykont, C. Trichard, K. Valerius, C. van Eldik, G. Vasileiadis, C. Venter, A. Viana, P. Vincent, H. J. Völk, F. Volpe, M. Vorster, S. J. Wagner, P. Wagner, M. Ward, M. Weidinger, R. White, A. Wierzcholska, P. Willmann, A. Wörnlein, D. Wouters, M. Zacharias, A. Zajczyk, A. A. Zdziarski, A. Zech, H. S. Zechlin, J. S. Perkins, R. Ojha, J. Stevens, P. G. Edwards, M. Kadler

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

A deep observation campaign carried out by the High Energy Stereoscopic System (HESS) on Centaurus A enabled the discovery of γ-rays from the blazar 1ES 1312-423, 2° away from the radio galaxy. With a differential flux at 1 TeV of f(1 TeV) = (1.9 ± 0.6^stat ± 0.4_sys) × 10^-13 cm^-2 s^-1 TeV^-1 corresponding to 0.5 per cent of the Crab nebula differential flux and a spectral index γ = 2.9 ± 0.5_stat ± 0.2_sys, 1ES 1312-423 is one of the faintest sources ever detected in the very high energy (E <100 GeV) extragalactic sky. A careful analysis using three and a half years of Fermi Large Area Telescope (Fermi-LAT) data allows the discovery at high energies (100 < E MeV) of a hard spectrum (γ =1.4±0.4stat ±0.2sys) source coincident with 1ES 1312-423. Radio, optical, UV and X-ray observations complete the spectral energy distribution of this blazar, now covering 16 decades in energy. The emission is successfully fitted with a synchrotron self-Compton model for the non-thermal component, combined with a blackbody spectrum for the optical emission from the host galaxy.

Original language	English (US)
Pages (from-to)	1889-1901
Number of pages	13
Journal	Monthly Notices of the Royal Astronomical Society
Volume	434
Issue number	3
DOIs	https://doi.org/10.1093/mnras/stt1081
State	Published - Sep 2013

Keywords

Bl Lacertae objects: individual: 1ES 1312-423
Galaxies: active
Galaxies: jets
Gamma-rays: galaxies.
Radiation mechanisms: non-thermal

Publisher link

10.1093/mnras/stt1081

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Abramowski, A., Acero, F., Aharonian, F., Akhperjanian, A. G., Angüner, E., Anton, G., Balenderan, S., Balzer, A., Barnacka, A., Becherini, Y., Becker Tjus, J., Bernlöhr, K., Birsin, E., Bissaldi, E., Biteau, J., Boisson, C., Bolmont, J., Bordas, P., Brucker, J., ... Kadler, M. (2013). Hess and fermi-lat discovery of γ-rays from the blazar 1ES 1312-423. Monthly Notices of the Royal Astronomical Society, 434(3), 1889-1901. https://doi.org/10.1093/mnras/stt1081

Abramowski, A, Acero, F, Aharonian, F, Akhperjanian, AG, Angüner, E, Anton, G, Balenderan, S, Balzer, A, Barnacka, A, Becherini, Y, Becker Tjus, J, Bernlöhr, K, Birsin, E, Bissaldi, E, Biteau, J, Boisson, C, Bolmont, J, Bordas, P, Brucker, J, Brun, F, Brun, P, Bulik, T, Carrigan, S, Casanova, S, Cerruti, M, Chadwick, PM, Chalme-Calvet, R, Chaves, RCG, Cheesebrough, A, Chrétien, M, Colafrancesco, S, Cologna, G, Conrad, J, Couturier, C, Dalton, M, Daniel, MK, Davids, ID, Degrange, B, Deil, C, deWilt, P, Dickinson, HJ, Djannati-Ataï, A, Domainko, W, Drury, LOC, Dubus, G, Dutson, K, Dyks, J, Dyrda, M, Edwards, T, Egberts, K, Eger, P, Espigat, P, Farnier, C, Fegan, S, Feinstein, F, Fernandes, MV, Fernandez, D, Fiasson, A, Fontaine, G, Förster, A, Fuling, M, Gajdus, M, Gallant, YA, Garrigoux, T, Gast, H, Giebels, B, Glicenstein, JF, Göring, D, Grondin, MH, Grudzínska, M, Häffner, S, Hague, JD, Hahn, J, Harris, J, Heinzelmann, G, Henri, G, Hermann, G, Hervet, O, Hillert, A, Hinton, JA, Hofmann, W, Hofverberg, P, Holler, M, Horns, D, Jacholkowska, A, Jahn, C, Jamrozy, M, Janiak, M, Jankowsky, F, Jung, I, Kastendieck, MA, Katarzyński, K, Katz, U, Kaufmann, S, Khélifi, B, Kieffer, M, Klepser, S, Klochkov, D, Kluźniak, W, Kneiske, T, Kolitzus, D, Komin, N, Kosack, K, Krakau, S, Krayzel, F, Krüger, PP, Laffon, H, Lamanna, G, Lefaucheur, J, Lemoine-Goumard, M, Lenain, JP, Lennarz, D, Lohse, T, Lopatin, A, Lu, CC, Marandon, V, Marcowith, A, Maurin, G, Maxted, N, Mayer, M, McComb, TJL, Medina, MC, Méhault, J, Menzler, U, Meyer, M, Moderski, R, Mohamed, M, Moulin, E, Murach, T, Naumann, CL, de Naurois, M, Nedbal, D, Niemiec, J, Nolan, SJ, Oakes, L, Ohm, S, de Oña Wilhelmi, E, Opitz, B, Ostrowski, M, Oya, I, Panter, M, Parsons, RD, Paz Arribas, M, Pekeur, NW, Pelletier, G, Perez, J, Petrucci, PO, Peyaud, B, Pita, S, Poon, H, Pühlhofer, G, Punch, M, Quirrenbach, A, Raab, S, Raue, M, Reimer, A, Reimer, O, Renaud, M, de los Reyes, R, Rieger, F, Rob, L, Rosier-Lees, S, Rowell, G, Rudak, B, Rulten, CB, Sahakian, V, Sanchez, DA, Santangelo, A, Schlickeiser, R, Schüssler, F, Schulz, A, Schwanke, U, Schwarzburg, S, Schwemmer, S, Sol, H, Spengler, G, Spieß, F, Stawarz, L, Steenkamp, R, Stegmann, C, Stinzing, F, Stycz, K, Sushch, I, Szostek, A, Tavernet, JP, Terrier, R, Tluczykont, M, Trichard, C, Valerius, K, van Eldik, C, Vasileiadis, G, Venter, C, Viana, A, Vincent, P, Völk, HJ, Volpe, F, Vorster, M, Wagner, SJ, Wagner, P, Ward, M, Weidinger, M, White, R, Wierzcholska, A, Willmann, P, Wörnlein, A, Wouters, D, Zacharias, M, Zajczyk, A, Zdziarski, AA, Zech, A, Zechlin, HS, Perkins, JS, Ojha, R, Stevens, J, Edwards, PG & Kadler, M 2013, 'Hess and fermi-lat discovery of γ-rays from the blazar 1ES 1312-423', Monthly Notices of the Royal Astronomical Society, vol. 434, no. 3, pp. 1889-1901. https://doi.org/10.1093/mnras/stt1081

@article{27bb30c01c3c4f0aa840b1e942e87ce0,

title = "Hess and fermi-lat discovery of γ-rays from the blazar 1ES 1312-423",

abstract = "A deep observation campaign carried out by the High Energy Stereoscopic System (HESS) on Centaurus A enabled the discovery of γ-rays from the blazar 1ES 1312-423, 2° away from the radio galaxy. With a differential flux at 1 TeV of f(1 TeV) = (1.9 ± 0.6stat ± 0.4sys) × 10-13 cm-2 s-1 TeV-1 corresponding to 0.5 per cent of the Crab nebula differential flux and a spectral index γ = 2.9 ± 0.5stat ± 0.2sys, 1ES 1312-423 is one of the faintest sources ever detected in the very high energy (E <100 GeV) extragalactic sky. A careful analysis using three and a half years of Fermi Large Area Telescope (Fermi-LAT) data allows the discovery at high energies (100 < E MeV) of a hard spectrum (γ =1.4±0.4stat ±0.2sys) source coincident with 1ES 1312-423. Radio, optical, UV and X-ray observations complete the spectral energy distribution of this blazar, now covering 16 decades in energy. The emission is successfully fitted with a synchrotron self-Compton model for the non-thermal component, combined with a blackbody spectrum for the optical emission from the host galaxy.",

keywords = "Bl Lacertae objects: individual: 1ES 1312-423, Galaxies: active, Galaxies: jets, Gamma-rays: galaxies., Radiation mechanisms: non-thermal",

author = "A. Abramowski and F. Acero and F. Aharonian and Akhperjanian, {A. G.} and E. Ang{\"u}ner and G. Anton and S. Balenderan and A. Balzer and A. Barnacka and Y. Becherini and {Becker Tjus}, J. and K. Bernl{\"o}hr and E. Birsin and E. Bissaldi and J. Biteau and C. Boisson and J. Bolmont and P. Bordas and J. Brucker and F. Brun and P. Brun and T. Bulik and S. Carrigan and S. Casanova and M. Cerruti and Chadwick, {P. M.} and R. Chalme-Calvet and Chaves, {R. C G} and A. Cheesebrough and M. Chr{\'e}tien and S. Colafrancesco and G. Cologna and J. Conrad and C. Couturier and M. Dalton and Daniel, {M. K.} and Davids, {I. D.} and B. Degrange and C. Deil and P. deWilt and Dickinson, {H. J.} and A. Djannati-Ata{\"i} and W. Domainko and Drury, {L. O C} and G. Dubus and K. Dutson and J. Dyks and M. Dyrda and T. Edwards and K. Egberts and P. Eger and P. Espigat and C. Farnier and S. Fegan and F. Feinstein and Fernandes, {M. V.} and D. Fernandez and A. Fiasson and G. Fontaine and A. F{\"o}rster and M. Fuling and M. Gajdus and Gallant, {Y. A.} and T. Garrigoux and H. Gast and B. Giebels and Glicenstein, {J. F.} and D. G{\"o}ring and Grondin, {M. H.} and M. Grudz{\'i}nska and S. H{\"a}ffner and Hague, {J. D.} and J. Hahn and J. Harris and G. Heinzelmann and G. Henri and G. Hermann and O. Hervet and A. Hillert and Hinton, {J. A.} and W. Hofmann and P. Hofverberg and M. Holler and D. Horns and A. Jacholkowska and C. Jahn and M. Jamrozy and M. Janiak and F. Jankowsky and I. Jung and Kastendieck, {M. A.} and K. Katarzy{\'n}ski and U. Katz and S. Kaufmann and B. Kh{\'e}lifi and M. Kieffer and S. Klepser and D. Klochkov and W. Klu{\'z}niak and T. Kneiske and D. Kolitzus and N. Komin and K. Kosack and S. Krakau and F. Krayzel and Kr{\"u}ger, {P. P.} and H. Laffon and G. Lamanna and J. Lefaucheur and M. Lemoine-Goumard and Lenain, {J. P.} and D. Lennarz and T. Lohse and A. Lopatin and Lu, {C. C.} and V. Marandon and A. Marcowith and G. Maurin and N. Maxted and M. Mayer and McComb, {T. J L} and Medina, {M. C.} and J. M{\'e}hault and U. Menzler and M. Meyer and R. Moderski and M. Mohamed and E. Moulin and T. Murach and Naumann, {C. L.} and {de Naurois}, M. and D. Nedbal and J. Niemiec and Nolan, {S. J.} and L. Oakes and S. Ohm and {de O{\~n}a Wilhelmi}, E. and B. Opitz and M. Ostrowski and I. Oya and M. Panter and Parsons, {R. D.} and {Paz Arribas}, M. and Pekeur, {N. W.} and G. Pelletier and J. Perez and Petrucci, {P. O.} and B. Peyaud and S. Pita and H. Poon and G. P{\"u}hlhofer and M. Punch and A. Quirrenbach and S. Raab and M. Raue and A. Reimer and O. Reimer and M. Renaud and {de los Reyes}, R. and F. Rieger and L. Rob and S. Rosier-Lees and G. Rowell and B. Rudak and Rulten, {C. B.} and V. Sahakian and Sanchez, {D. A.} and A. Santangelo and R. Schlickeiser and F. Sch{\"u}ssler and A. Schulz and U. Schwanke and S. Schwarzburg and S. Schwemmer and H. Sol and G. Spengler and F. Spie{\ss} and L. Stawarz and R. Steenkamp and C. Stegmann and F. Stinzing and K. Stycz and I. Sushch and A. Szostek and Tavernet, {J. P.} and R. Terrier and M. Tluczykont and C. Trichard and K. Valerius and {van Eldik}, C. and G. Vasileiadis and C. Venter and A. Viana and P. Vincent and V{\"o}lk, {H. J.} and F. Volpe and M. Vorster and Wagner, {S. J.} and P. Wagner and M. Ward and M. Weidinger and R. White and A. Wierzcholska and P. Willmann and A. W{\"o}rnlein and D. Wouters and M. Zacharias and A. Zajczyk and Zdziarski, {A. A.} and A. Zech and Zechlin, {H. S.} and Perkins, {J. S.} and R. Ojha and J. Stevens and Edwards, {P. G.} and M. Kadler",

year = "2013",

month = sep,

doi = "10.1093/mnras/stt1081",

language = "English (US)",

volume = "434",

pages = "1889--1901",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "3",

}

TY - JOUR

T1 - Hess and fermi-lat discovery of γ-rays from the blazar 1ES 1312-423

AU - Abramowski, A.

AU - Acero, F.

AU - Aharonian, F.

AU - Akhperjanian, A. G.

AU - Angüner, E.

AU - Anton, G.

AU - Balenderan, S.

AU - Balzer, A.

AU - Barnacka, A.

AU - Becherini, Y.

AU - Becker Tjus, J.

AU - Bernlöhr, K.

AU - Birsin, E.

AU - Bissaldi, E.

AU - Biteau, J.

AU - Boisson, C.

AU - Bolmont, J.

AU - Bordas, P.

AU - Brucker, J.

AU - Brun, F.

AU - Brun, P.

AU - Bulik, T.

AU - Carrigan, S.

AU - Casanova, S.

AU - Cerruti, M.

AU - Chadwick, P. M.

AU - Chalme-Calvet, R.

AU - Chaves, R. C G

AU - Cheesebrough, A.

AU - Chrétien, M.

AU - Colafrancesco, S.

AU - Cologna, G.

AU - Conrad, J.

AU - Couturier, C.

AU - Dalton, M.

AU - Daniel, M. K.

AU - Davids, I. D.

AU - Degrange, B.

AU - Deil, C.

AU - deWilt, P.

AU - Dickinson, H. J.

AU - Djannati-Ataï, A.

AU - Domainko, W.

AU - Drury, L. O C

AU - Dubus, G.

AU - Dutson, K.

AU - Dyks, J.

AU - Dyrda, M.

AU - Edwards, T.

AU - Egberts, K.

AU - Eger, P.

AU - Espigat, P.

AU - Farnier, C.

AU - Fegan, S.

AU - Feinstein, F.

AU - Fernandes, M. V.

AU - Fernandez, D.

AU - Fiasson, A.

AU - Fontaine, G.

AU - Förster, A.

AU - Fuling, M.

AU - Gajdus, M.

AU - Gallant, Y. A.

AU - Garrigoux, T.

AU - Gast, H.

AU - Giebels, B.

AU - Glicenstein, J. F.

AU - Göring, D.

AU - Grondin, M. H.

AU - Grudzínska, M.

AU - Häffner, S.

AU - Hague, J. D.

AU - Hahn, J.

AU - Harris, J.

AU - Heinzelmann, G.

AU - Henri, G.

AU - Hermann, G.

AU - Hervet, O.

AU - Hillert, A.

AU - Hinton, J. A.

AU - Hofmann, W.

AU - Hofverberg, P.

AU - Holler, M.

AU - Horns, D.

AU - Jacholkowska, A.

AU - Jahn, C.

AU - Jamrozy, M.

AU - Janiak, M.

AU - Jankowsky, F.

AU - Jung, I.

AU - Kastendieck, M. A.

AU - Katarzyński, K.

AU - Katz, U.

AU - Kaufmann, S.

AU - Khélifi, B.

AU - Kieffer, M.

AU - Klepser, S.

AU - Klochkov, D.

AU - Kluźniak, W.

AU - Kneiske, T.

AU - Kolitzus, D.

AU - Komin, N.

AU - Kosack, K.

AU - Krakau, S.

AU - Krayzel, F.

AU - Krüger, P. P.

AU - Laffon, H.

AU - Lamanna, G.

AU - Lefaucheur, J.

AU - Lemoine-Goumard, M.

AU - Lenain, J. P.

AU - Lennarz, D.

AU - Lohse, T.

AU - Lopatin, A.

AU - Lu, C. C.

AU - Marandon, V.

AU - Marcowith, A.

AU - Maurin, G.

AU - Maxted, N.

AU - Mayer, M.

AU - McComb, T. J L

AU - Medina, M. C.

AU - Méhault, J.

AU - Menzler, U.

AU - Meyer, M.

AU - Moderski, R.

AU - Mohamed, M.

AU - Moulin, E.

AU - Murach, T.

AU - Naumann, C. L.

AU - de Naurois, M.

AU - Nedbal, D.

AU - Niemiec, J.

AU - Nolan, S. J.

AU - Oakes, L.

AU - Ohm, S.

AU - de Oña Wilhelmi, E.

AU - Opitz, B.

AU - Ostrowski, M.

AU - Oya, I.

AU - Panter, M.

AU - Parsons, R. D.

AU - Paz Arribas, M.

AU - Pekeur, N. W.

AU - Pelletier, G.

AU - Perez, J.

AU - Petrucci, P. O.

AU - Peyaud, B.

AU - Pita, S.

AU - Poon, H.

AU - Pühlhofer, G.

AU - Punch, M.

AU - Quirrenbach, A.

AU - Raab, S.

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AU - Kadler, M.

PY - 2013/9

Y1 - 2013/9

N2 - A deep observation campaign carried out by the High Energy Stereoscopic System (HESS) on Centaurus A enabled the discovery of γ-rays from the blazar 1ES 1312-423, 2° away from the radio galaxy. With a differential flux at 1 TeV of f(1 TeV) = (1.9 ± 0.6stat ± 0.4sys) × 10-13 cm-2 s-1 TeV-1 corresponding to 0.5 per cent of the Crab nebula differential flux and a spectral index γ = 2.9 ± 0.5stat ± 0.2sys, 1ES 1312-423 is one of the faintest sources ever detected in the very high energy (E <100 GeV) extragalactic sky. A careful analysis using three and a half years of Fermi Large Area Telescope (Fermi-LAT) data allows the discovery at high energies (100 < E MeV) of a hard spectrum (γ =1.4±0.4stat ±0.2sys) source coincident with 1ES 1312-423. Radio, optical, UV and X-ray observations complete the spectral energy distribution of this blazar, now covering 16 decades in energy. The emission is successfully fitted with a synchrotron self-Compton model for the non-thermal component, combined with a blackbody spectrum for the optical emission from the host galaxy.

AB - A deep observation campaign carried out by the High Energy Stereoscopic System (HESS) on Centaurus A enabled the discovery of γ-rays from the blazar 1ES 1312-423, 2° away from the radio galaxy. With a differential flux at 1 TeV of f(1 TeV) = (1.9 ± 0.6stat ± 0.4sys) × 10-13 cm-2 s-1 TeV-1 corresponding to 0.5 per cent of the Crab nebula differential flux and a spectral index γ = 2.9 ± 0.5stat ± 0.2sys, 1ES 1312-423 is one of the faintest sources ever detected in the very high energy (E <100 GeV) extragalactic sky. A careful analysis using three and a half years of Fermi Large Area Telescope (Fermi-LAT) data allows the discovery at high energies (100 < E MeV) of a hard spectrum (γ =1.4±0.4stat ±0.2sys) source coincident with 1ES 1312-423. Radio, optical, UV and X-ray observations complete the spectral energy distribution of this blazar, now covering 16 decades in energy. The emission is successfully fitted with a synchrotron self-Compton model for the non-thermal component, combined with a blackbody spectrum for the optical emission from the host galaxy.

KW - Bl Lacertae objects: individual: 1ES 1312-423

KW - Galaxies: active

KW - Galaxies: jets

KW - Gamma-rays: galaxies.

KW - Radiation mechanisms: non-thermal

UR - http://www.scopus.com/inward/record.url?scp=84884306761&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84884306761&partnerID=8YFLogxK

U2 - 10.1093/mnras/stt1081

DO - 10.1093/mnras/stt1081

M3 - Article

AN - SCOPUS:84884306761

VL - 434

SP - 1889

EP - 1901

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 3

ER -

Hess and fermi-lat discovery of γ-rays from the blazar 1ES 1312-423

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