Discovery of gamma-ray emission from the extragalactic pulsar wind nebula N- 157B with H.E.S.S.

A. Abramowski; F. Acero; F. Aharonian; A. G. Akhperjanian; G. Anton; S. Balenderan; A. Balzer; A. Barnacka; Y. Becherini; J. Becker; K. Bernlöhr; E. Birsin; J. Biteau; A. Bochow; C. Boisson; J. Bolmont; P. Bordas; J. Brucker; F. Brun; P. Brun; T. Bulik; S. Carrigan; S. Casanova; M. Cerruti; P. M. Chadwick; A. Charbonnier; R. C G Chaves; A. Cheesebrough; G. Cologna; J. Conrad; C. Couturier; M. Dalton; M. K. Daniel; I. D. Davids; B. Degrange; C. Deil; H. J. Dickinson; A. Djannati-Ataï; W. Domainko; L. O. Drury; G. Dubus; K. Dutson; J. Dyks; M. Dyrda; K. Egberts; P. Eger; P. Espigat; L. Fallon; C. Farnier; S. Fegan; F. Feinstein; M. V. Fernandes; D. Fernandez; A. Fiasson; G. Fontaine; A. Förster; M. Füßling; M. Gajdus; Y. A. Gallant; T. Garrigoux; H. Gast; L. Gérard; B. Giebels; J. F. Glicenstein; B. Glück; D. Göring; M. H. Grondin; S. Häffner; J. D. Hague; J. Hahn; D. Hampf; J. Harris; M. Hauser; S. Heinz; G. Heinzelmann; G. Henri; G. Hermann; A. Hillert; J. A. Hinton; W. Hofmann; P. Hofverberg; M. Holler; D. Horns; A. Jacholkowska; O. C. De Jager; C. Jahn; M. Jamrozy; I. Jung; M. A. Kastendieck; K. Katarzyński; U. Katz; S. Kaufmann; B. Khélifi; D. Klochkov; W. Kluź Niak; T. Kneiske; Nu Komin; K. Kosack; R. Kossakowski; F. Krayzel; H. Laffon; G. Lamanna; J. P. Lenain; D. Lennarz; T. Lohse; A. Lopatin; C. C. Lu; V. Marandon; A. Marcowith; J. Masbou; G. Maurin; N. Maxted; M. Mayer; T. J L McComb; M. C. Medina; J. Méhault; U. Menzler; R. Moderski; M. Mohamed; E. Moulin; C. L. Naumann; M. Naumann-Godo; M. De Naurois; D. Nedbal; N. Nguyen; B. Nicholas; J. Niemiec; S. J. Nolan; S. Ohm; E. De Oña Wilhelmi; B. Opitz; M. Ostrowski; I. Oya; M. Panter; M. Paz Arribas; N. W. Pekeur; G. Pelletier; J. Perez; P. O. Petrucci; B. Peyaud; S. Pita; G. Pühlhofer; M. Punch; A. Quirrenbach; M. Raue; A. Reimer; O. Reimer; M. Renaud; R. De Los Reyes; F. Rieger; J. Ripken; L. Rob; S. Rosier-Lees; G. Rowell; B. Rudak; C. B. Rulten; V. Sahakian; D. A. Sanchez; A. Santangelo; R. Schlickeiser; A. Schulz; U. Schwanke; S. Schwarzburg; S. Schwemmer; F. Sheidaei; J. L. Skilton; H. Sol; G. Spengler; ÅŁ Stawarz; R. Steenkamp; C. Stegmann; F. Stinzing; K. Stycz; I. Sushch; A. Szostek; J. P. Tavernet; R. Terrier; M. Tluczykont; K. Valerius; C. Van Eldik; G. Vasileiadis; C. Venter; A. Viana; P. Vincent; H. J. Völk; F. Volpe; S. Vorobiov; M. Vorster; S. J. Wagner; M. Ward; R. White; A. Wierzcholska; M. Zacharias; A. Zajczyk; A. A. Zdziarski; A. Zech; H. S. Zechlin

doi:10.1051/0004-6361/201219906

Discovery of gamma-ray emission from the extragalactic pulsar wind nebula N- 157B with H.E.S.S.

A. Abramowski, F. Acero, F. Aharonian, A. G. Akhperjanian, G. Anton, S. Balenderan, A. Balzer, A. Barnacka, Y. Becherini, J. Becker, K. Bernlöhr, E. Birsin, J. Biteau, A. Bochow, C. Boisson, J. Bolmont, P. Bordas, J. Brucker, F. Brun, P. BrunT. Bulik, S. Carrigan, S. Casanova, M. Cerruti, P. M. Chadwick, A. Charbonnier, R. C G Chaves, A. Cheesebrough, G. Cologna, J. Conrad, C. Couturier, M. Dalton, M. K. Daniel, I. D. Davids, B. Degrange, C. Deil, H. J. Dickinson, A. Djannati-Ataï, W. Domainko, L. O. Drury, G. Dubus, K. Dutson, J. Dyks, M. Dyrda, K. Egberts, P. Eger, P. Espigat, L. Fallon, C. Farnier, S. Fegan, F. Feinstein, M. V. Fernandes, D. Fernandez, A. Fiasson, G. Fontaine, A. Förster, M. Füßling, M. Gajdus, Y. A. Gallant, T. Garrigoux, H. Gast, L. Gérard, B. Giebels, J. F. Glicenstein, B. Glück, D. Göring, M. H. Grondin, S. Häffner, J. D. Hague, J. Hahn, D. Hampf, J. Harris, M. Hauser, S. Heinz, G. Heinzelmann, G. Henri, G. Hermann, A. Hillert, J. A. Hinton, W. Hofmann, P. Hofverberg, M. Holler, D. Horns, A. Jacholkowska, O. C. De Jager, C. Jahn, M. Jamrozy, I. Jung, M. A. Kastendieck, K. Katarzyński, U. Katz, S. Kaufmann, B. Khélifi, D. Klochkov, W. Kluź Niak, T. Kneiske, Nu Komin, K. Kosack, R. Kossakowski, F. Krayzel, H. Laffon, G. Lamanna, J. P. Lenain, D. Lennarz, T. Lohse, A. Lopatin, C. C. Lu, V. Marandon, A. Marcowith, J. Masbou, G. Maurin, N. Maxted, M. Mayer, T. J L McComb, M. C. Medina, J. Méhault, U. Menzler, R. Moderski, M. Mohamed, E. Moulin, C. L. Naumann, M. Naumann-Godo, M. De Naurois, D. Nedbal, N. Nguyen, B. Nicholas, J. Niemiec, S. J. Nolan, S. Ohm, E. De Oña Wilhelmi, B. Opitz, M. Ostrowski, I. Oya, M. Panter, M. Paz Arribas, N. W. Pekeur, G. Pelletier, J. Perez, P. O. Petrucci, B. Peyaud, S. Pita, G. Pühlhofer, M. Punch, A. Quirrenbach, M. Raue, A. Reimer, O. Reimer, M. Renaud, R. De Los Reyes, F. Rieger, J. Ripken, L. Rob, S. Rosier-Lees, G. Rowell, B. Rudak, C. B. Rulten, V. Sahakian, D. A. Sanchez, A. Santangelo, R. Schlickeiser, A. Schulz, U. Schwanke, S. Schwarzburg, S. Schwemmer, F. Sheidaei, J. L. Skilton, H. Sol, G. Spengler, ÅŁ Stawarz, R. Steenkamp, C. Stegmann, F. Stinzing, K. Stycz, I. Sushch, A. Szostek, J. P. Tavernet, R. Terrier, M. Tluczykont, K. Valerius, C. Van Eldik, G. Vasileiadis, C. Venter, A. Viana, P. Vincent, H. J. Völk, F. Volpe, S. Vorobiov, M. Vorster, S. J. Wagner, M. Ward, R. White, A. Wierzcholska, M. Zacharias, A. Zajczyk, A. A. Zdziarski, A. Zech, H. S. Zechlin

Physics and Astronomy (Twin Cities)

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

22 Scopus citations

Abstract

We present the significant detection of the first extragalactic pulsar wind nebula (PWN) detected in gamma rays, N- 157B, located in the large Magellanic Cloud (LMC). Pulsars with high spin-down luminosity are found to power energised nebulae that emit gamma rays up to energies of several tens of TeV. N- 157B is associated with PSR- J0537-6910, which is the pulsar with the highest known spin-down luminosity. The High Energy Stereoscopic System telescope array observed this nebula on a yearly basis from 2004 to 2009 with a dead-time corrected exposure of 46- h. The gamma-ray spectrum between 600- GeV and 12- TeV is well-described by a pure power-law with a photon index of 2.8 ± 0.2_stat ± 0.3_syst and a normalisation at 1- TeV of (8.2 ± 0.8_stat ± 2.5_syst) × 10 ^-13 cm^-2- s^-1- TeV^-1. A leptonic multi-wavelength model shows that an energy of about 4 × 10⁴⁹ erg is stored in electrons and positrons. The apparent efficiency, which is the ratio of the TeV gamma-ray luminosity to the pulsar's spin-down luminosity, 0.08% ± 0.01%, is comparable to those of PWNe found in the Milky Way. The detection of a PWN at such a large distance is possible due to the pulsar's favourable spin-down luminosity and a bright infrared photon-field serving as an inverse-Compton-scattering target for accelerated leptons. By applying a calorimetric technique to these observations, the pulsar's birth period is estimated to be shorter than 10 ms.

Original language	English (US)
Article number	L2
Journal	Astronomy and Astrophysics
Volume	545
DOIs	https://doi.org/10.1051/0004-6361/201219906
State	Published - 2012

Bibliographical note

Funding Information:
The support of the Namibian authorities and of the University of Namibia in facilitating the construction and operation of H.E.S.S. is gratefully acknowledged, as is the support by the German Ministry for Education and Research (BMBF), the Max Planck Society, the German Research Foundation (DFG), the French Ministry for Research, the CNRS-IN2P3 and the Astroparticle Interdisciplinary Programme of the CNRS, the UK Science and Technology Facilities Council (STFC), the IPNP of the Charles University, the Czech Science Foundation, the Polish Ministry of Science and Higher Education, the South African Department of Science and Technology and National Research Foundation, and by the University of Namibia. We appreciate the excellent work of the technical support staff in Berlin, Durham, Hamburg, Heidelberg, Palaiseau, Paris, Saclay, and in Namibia in the construction and operation of the equipment.

Keywords

Gamma rays: general
ISM: supernova remnants
Magellanic Clouds
Pulsars: individual: PSR J0537-6910

Publisher link

10.1051/0004-6361/201219906

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Abramowski, A., Acero, F., Aharonian, F., Akhperjanian, A. G., Anton, G., Balenderan, S., Balzer, A., Barnacka, A., Becherini, Y., Becker, J., Bernlöhr, K., Birsin, E., Biteau, J., Bochow, A., Boisson, C., Bolmont, J., Bordas, P., Brucker, J., Brun, F., ... Zechlin, H. S. (2012). Discovery of gamma-ray emission from the extragalactic pulsar wind nebula N- 157B with H.E.S.S. Astronomy and Astrophysics, 545, Article L2. https://doi.org/10.1051/0004-6361/201219906

Abramowski, A, Acero, F, Aharonian, F, Akhperjanian, AG, Anton, G, Balenderan, S, Balzer, A, Barnacka, A, Becherini, Y, Becker, J, Bernlöhr, K, Birsin, E, Biteau, J, Bochow, A, Boisson, C, Bolmont, J, Bordas, P, Brucker, J, Brun, F, Brun, P, Bulik, T, Carrigan, S, Casanova, S, Cerruti, M, Chadwick, PM, Charbonnier, A, Chaves, RCG, Cheesebrough, A, Cologna, G, Conrad, J, Couturier, C, Dalton, M, Daniel, MK, Davids, ID, Degrange, B, Deil, C, Dickinson, HJ, Djannati-Ataï, A, Domainko, W, Drury, LO, Dubus, G, Dutson, K, Dyks, J, Dyrda, M, Egberts, K, Eger, P, Espigat, P, Fallon, L, Farnier, C, Fegan, S, Feinstein, F, Fernandes, MV, Fernandez, D, Fiasson, A, Fontaine, G, Förster, A, Füßling, M, Gajdus, M, Gallant, YA, Garrigoux, T, Gast, H, Gérard, L, Giebels, B, Glicenstein, JF, Glück, B, Göring, D, Grondin, MH, Häffner, S, Hague, JD, Hahn, J, Hampf, D, Harris, J, Hauser, M, Heinz, S, Heinzelmann, G, Henri, G, Hermann, G, Hillert, A, Hinton, JA, Hofmann, W, Hofverberg, P, Holler, M, Horns, D, Jacholkowska, A, De Jager, OC, Jahn, C, Jamrozy, M, Jung, I, Kastendieck, MA, Katarzyński, K, Katz, U, Kaufmann, S, Khélifi, B, Klochkov, D, Kluź Niak, W, Kneiske, T, Komin, N, Kosack, K, Kossakowski, R, Krayzel, F, Laffon, H, Lamanna, G, Lenain, JP, Lennarz, D, Lohse, T, Lopatin, A, Lu, CC, Marandon, V, Marcowith, A, Masbou, J, Maurin, G, Maxted, N, Mayer, M, McComb, TJL, Medina, MC, Méhault, J, Menzler, U, Moderski, R, Mohamed, M, Moulin, E, Naumann, CL, Naumann-Godo, M, De Naurois, M, Nedbal, D, Nguyen, N, Nicholas, B, Niemiec, J, Nolan, SJ, Ohm, S, De Oña Wilhelmi, E, Opitz, B, Ostrowski, M, Oya, I, Panter, M, Paz Arribas, M, Pekeur, NW, Pelletier, G, Perez, J, Petrucci, PO, Peyaud, B, Pita, S, Pühlhofer, G, Punch, M, Quirrenbach, A, Raue, M, Reimer, A, Reimer, O, Renaud, M, De Los Reyes, R, Rieger, F, Ripken, J, Rob, L, Rosier-Lees, S, Rowell, G, Rudak, B, Rulten, CB, Sahakian, V, Sanchez, DA, Santangelo, A, Schlickeiser, R, Schulz, A, Schwanke, U, Schwarzburg, S, Schwemmer, S, Sheidaei, F, Skilton, JL, Sol, H, Spengler, G, Stawarz, ÅŁ, Steenkamp, R, Stegmann, C, Stinzing, F, Stycz, K, Sushch, I, Szostek, A, Tavernet, JP, Terrier, R, Tluczykont, M, Valerius, K, Van Eldik, C, Vasileiadis, G, Venter, C, Viana, A, Vincent, P, Völk, HJ, Volpe, F, Vorobiov, S, Vorster, M, Wagner, SJ, Ward, M, White, R, Wierzcholska, A, Zacharias, M, Zajczyk, A, Zdziarski, AA, Zech, A & Zechlin, HS 2012, 'Discovery of gamma-ray emission from the extragalactic pulsar wind nebula N- 157B with H.E.S.S.', Astronomy and Astrophysics, vol. 545, L2. https://doi.org/10.1051/0004-6361/201219906

@article{d3b94b3b9b2b42bf9b5b6d269337d1eb,

title = "Discovery of gamma-ray emission from the extragalactic pulsar wind nebula N- 157B with H.E.S.S.",

abstract = "We present the significant detection of the first extragalactic pulsar wind nebula (PWN) detected in gamma rays, N- 157B, located in the large Magellanic Cloud (LMC). Pulsars with high spin-down luminosity are found to power energised nebulae that emit gamma rays up to energies of several tens of TeV. N- 157B is associated with PSR- J0537-6910, which is the pulsar with the highest known spin-down luminosity. The High Energy Stereoscopic System telescope array observed this nebula on a yearly basis from 2004 to 2009 with a dead-time corrected exposure of 46- h. The gamma-ray spectrum between 600- GeV and 12- TeV is well-described by a pure power-law with a photon index of 2.8 ± 0.2stat ± 0.3syst and a normalisation at 1- TeV of (8.2 ± 0.8stat ± 2.5syst) × 10 -13 cm-2- s-1- TeV-1. A leptonic multi-wavelength model shows that an energy of about 4 × 1049 erg is stored in electrons and positrons. The apparent efficiency, which is the ratio of the TeV gamma-ray luminosity to the pulsar's spin-down luminosity, 0.08% ± 0.01%, is comparable to those of PWNe found in the Milky Way. The detection of a PWN at such a large distance is possible due to the pulsar's favourable spin-down luminosity and a bright infrared photon-field serving as an inverse-Compton-scattering target for accelerated leptons. By applying a calorimetric technique to these observations, the pulsar's birth period is estimated to be shorter than 10 ms.",

keywords = "Gamma rays: general, ISM: supernova remnants, Magellanic Clouds, Pulsars: individual: PSR J0537-6910",

author = "A. Abramowski and F. Acero and F. Aharonian and Akhperjanian, {A. G.} and G. Anton and S. Balenderan and A. Balzer and A. Barnacka and Y. Becherini and J. Becker and K. Bernl{\"o}hr and E. Birsin and J. Biteau and A. Bochow 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 A. Charbonnier and Chaves, {R. C G} and A. Cheesebrough 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 Dickinson, {H. J.} and A. Djannati-Ata{\"i} and W. Domainko and Drury, {L. O.} and G. Dubus and K. Dutson and J. Dyks and M. Dyrda and K. Egberts and P. Eger and P. Espigat and L. Fallon 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. F{\"u}{\ss}ling and M. Gajdus and Gallant, {Y. A.} and T. Garrigoux and H. Gast and L. G{\'e}rard and B. Giebels and Glicenstein, {J. F.} and B. Gl{\"u}ck and D. G{\"o}ring and Grondin, {M. H.} and S. H{\"a}ffner and Hague, {J. D.} and J. Hahn and D. Hampf and J. Harris and M. Hauser and S. Heinz and G. Heinzelmann and G. Henri and G. Hermann and A. Hillert and Hinton, {J. A.} and W. Hofmann and P. Hofverberg and M. Holler and D. Horns and A. Jacholkowska and {De Jager}, {O. C.} and C. Jahn and M. Jamrozy and I. Jung and Kastendieck, {M. A.} and K. Katarzy{\'n}ski and U. Katz and S. Kaufmann and B. Kh{\'e}lifi and D. Klochkov and {Klu{\'z} Niak}, W. and T. Kneiske and Nu Komin and K. Kosack and R. Kossakowski and F. Krayzel and H. Laffon and G. Lamanna and Lenain, {J. P.} and D. Lennarz and T. Lohse and A. Lopatin and Lu, {C. C.} and V. Marandon and A. Marcowith and J. Masbou 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 R. Moderski and M. Mohamed and E. Moulin and Naumann, {C. L.} and M. Naumann-Godo and {De Naurois}, M. and D. Nedbal and N. Nguyen and B. Nicholas and J. Niemiec and Nolan, {S. J.} and S. Ohm and {De O{\~n}a Wilhelmi}, E. and B. Opitz and M. Ostrowski and I. Oya and M. Panter 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 G. P{\"u}hlhofer and M. Punch and A. Quirrenbach and M. Raue and A. Reimer and O. Reimer and M. Renaud and {De Los Reyes}, R. and F. Rieger and J. Ripken 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 A. Schulz and U. Schwanke and S. Schwarzburg and S. Schwemmer and F. Sheidaei and Skilton, {J. L.} and H. Sol and G. Spengler and {\AA}{\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 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 S. Vorobiov and M. Vorster and Wagner, {S. J.} and M. Ward and R. White and A. Wierzcholska and M. Zacharias and A. Zajczyk and Zdziarski, {A. A.} and A. Zech and Zechlin, {H. S.}",

note = "Funding Information: The support of the Namibian authorities and of the University of Namibia in facilitating the construction and operation of H.E.S.S. is gratefully acknowledged, as is the support by the German Ministry for Education and Research (BMBF), the Max Planck Society, the German Research Foundation (DFG), the French Ministry for Research, the CNRS-IN2P3 and the Astroparticle Interdisciplinary Programme of the CNRS, the UK Science and Technology Facilities Council (STFC), the IPNP of the Charles University, the Czech Science Foundation, the Polish Ministry of Science and Higher Education, the South African Department of Science and Technology and National Research Foundation, and by the University of Namibia. We appreciate the excellent work of the technical support staff in Berlin, Durham, Hamburg, Heidelberg, Palaiseau, Paris, Saclay, and in Namibia in the construction and operation of the equipment.",

year = "2012",

doi = "10.1051/0004-6361/201219906",

language = "English (US)",

volume = "545",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

}

TY - JOUR

T1 - Discovery of gamma-ray emission from the extragalactic pulsar wind nebula N- 157B with H.E.S.S.

AU - Abramowski, A.

AU - Acero, F.

AU - Aharonian, F.

AU - Akhperjanian, A. G.

AU - Anton, G.

AU - Balenderan, S.

AU - Balzer, A.

AU - Barnacka, A.

AU - Becherini, Y.

AU - Becker, J.

AU - Bernlöhr, K.

AU - Birsin, E.

AU - Biteau, J.

AU - Bochow, A.

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 - Charbonnier, A.

AU - Chaves, R. C G

AU - Cheesebrough, A.

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 - Dickinson, H. J.

AU - Djannati-Ataï, A.

AU - Domainko, W.

AU - Drury, L. O.

AU - Dubus, G.

AU - Dutson, K.

AU - Dyks, J.

AU - Dyrda, M.

AU - Egberts, K.

AU - Eger, P.

AU - Espigat, P.

AU - Fallon, L.

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 - Füßling, M.

AU - Gajdus, M.

AU - Gallant, Y. A.

AU - Garrigoux, T.

AU - Gast, H.

AU - Gérard, L.

AU - Giebels, B.

AU - Glicenstein, J. F.

AU - Glück, B.

AU - Göring, D.

AU - Grondin, M. H.

AU - Häffner, S.

AU - Hague, J. D.

AU - Hahn, J.

AU - Hampf, D.

AU - Harris, J.

AU - Hauser, M.

AU - Heinz, S.

AU - Heinzelmann, G.

AU - Henri, G.

AU - Hermann, G.

AU - Hillert, A.

AU - Hinton, J. A.

AU - Hofmann, W.

AU - Hofverberg, P.

AU - Holler, M.

AU - Horns, D.

AU - Jacholkowska, A.

AU - De Jager, O. C.

AU - Jahn, C.

AU - Jamrozy, M.

AU - Jung, I.

AU - Kastendieck, M. A.

AU - Katarzyński, K.

AU - Katz, U.

AU - Kaufmann, S.

AU - Khélifi, B.

AU - Klochkov, D.

AU - Kluź Niak, W.

AU - Kneiske, T.

AU - Komin, Nu

AU - Kosack, K.

AU - Kossakowski, R.

AU - Krayzel, F.

AU - Laffon, H.

AU - Lamanna, G.

AU - Lenain, J. P.

AU - Lennarz, D.

AU - Lohse, T.

AU - Lopatin, A.

AU - Lu, C. C.

AU - Marandon, V.

AU - Marcowith, A.

AU - Masbou, J.

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 - Moderski, R.

AU - Mohamed, M.

AU - Moulin, E.

AU - Naumann, C. L.

AU - Naumann-Godo, M.

AU - De Naurois, M.

AU - Nedbal, D.

AU - Nguyen, N.

AU - Nicholas, B.

AU - Niemiec, J.

AU - Nolan, S. J.

AU - Ohm, S.

AU - De Oña Wilhelmi, E.

AU - Opitz, B.

AU - Ostrowski, M.

AU - Oya, I.

AU - Panter, M.

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 - Pühlhofer, G.

AU - Punch, M.

AU - Quirrenbach, A.

AU - Raue, M.

AU - Reimer, A.

AU - Reimer, O.

AU - Renaud, M.

AU - De Los Reyes, R.

AU - Rieger, F.

AU - Ripken, J.

AU - Rob, L.

AU - Rosier-Lees, S.

AU - Rowell, G.

AU - Rudak, B.

AU - Rulten, C. B.

AU - Sahakian, V.

AU - Sanchez, D. A.

AU - Santangelo, A.

AU - Schlickeiser, R.

AU - Schulz, A.

AU - Schwanke, U.

AU - Schwarzburg, S.

AU - Schwemmer, S.

AU - Sheidaei, F.

AU - Skilton, J. L.

AU - Sol, H.

AU - Spengler, G.

AU - Stawarz, ÅŁ

AU - Steenkamp, R.

AU - Stegmann, C.

AU - Stinzing, F.

AU - Stycz, K.

AU - Sushch, I.

AU - Szostek, A.

AU - Tavernet, J. P.

AU - Terrier, R.

AU - Tluczykont, M.

AU - Valerius, K.

AU - Van Eldik, C.

AU - Vasileiadis, G.

AU - Venter, C.

AU - Viana, A.

AU - Vincent, P.

AU - Völk, H. J.

AU - Volpe, F.

AU - Vorobiov, S.

AU - Vorster, M.

AU - Wagner, S. J.

AU - Ward, M.

AU - White, R.

AU - Wierzcholska, A.

AU - Zacharias, M.

AU - Zajczyk, A.

AU - Zdziarski, A. A.

AU - Zech, A.

AU - Zechlin, H. S.

N1 - Funding Information: The support of the Namibian authorities and of the University of Namibia in facilitating the construction and operation of H.E.S.S. is gratefully acknowledged, as is the support by the German Ministry for Education and Research (BMBF), the Max Planck Society, the German Research Foundation (DFG), the French Ministry for Research, the CNRS-IN2P3 and the Astroparticle Interdisciplinary Programme of the CNRS, the UK Science and Technology Facilities Council (STFC), the IPNP of the Charles University, the Czech Science Foundation, the Polish Ministry of Science and Higher Education, the South African Department of Science and Technology and National Research Foundation, and by the University of Namibia. We appreciate the excellent work of the technical support staff in Berlin, Durham, Hamburg, Heidelberg, Palaiseau, Paris, Saclay, and in Namibia in the construction and operation of the equipment.

PY - 2012

Y1 - 2012

N2 - We present the significant detection of the first extragalactic pulsar wind nebula (PWN) detected in gamma rays, N- 157B, located in the large Magellanic Cloud (LMC). Pulsars with high spin-down luminosity are found to power energised nebulae that emit gamma rays up to energies of several tens of TeV. N- 157B is associated with PSR- J0537-6910, which is the pulsar with the highest known spin-down luminosity. The High Energy Stereoscopic System telescope array observed this nebula on a yearly basis from 2004 to 2009 with a dead-time corrected exposure of 46- h. The gamma-ray spectrum between 600- GeV and 12- TeV is well-described by a pure power-law with a photon index of 2.8 ± 0.2stat ± 0.3syst and a normalisation at 1- TeV of (8.2 ± 0.8stat ± 2.5syst) × 10 -13 cm-2- s-1- TeV-1. A leptonic multi-wavelength model shows that an energy of about 4 × 1049 erg is stored in electrons and positrons. The apparent efficiency, which is the ratio of the TeV gamma-ray luminosity to the pulsar's spin-down luminosity, 0.08% ± 0.01%, is comparable to those of PWNe found in the Milky Way. The detection of a PWN at such a large distance is possible due to the pulsar's favourable spin-down luminosity and a bright infrared photon-field serving as an inverse-Compton-scattering target for accelerated leptons. By applying a calorimetric technique to these observations, the pulsar's birth period is estimated to be shorter than 10 ms.

AB - We present the significant detection of the first extragalactic pulsar wind nebula (PWN) detected in gamma rays, N- 157B, located in the large Magellanic Cloud (LMC). Pulsars with high spin-down luminosity are found to power energised nebulae that emit gamma rays up to energies of several tens of TeV. N- 157B is associated with PSR- J0537-6910, which is the pulsar with the highest known spin-down luminosity. The High Energy Stereoscopic System telescope array observed this nebula on a yearly basis from 2004 to 2009 with a dead-time corrected exposure of 46- h. The gamma-ray spectrum between 600- GeV and 12- TeV is well-described by a pure power-law with a photon index of 2.8 ± 0.2stat ± 0.3syst and a normalisation at 1- TeV of (8.2 ± 0.8stat ± 2.5syst) × 10 -13 cm-2- s-1- TeV-1. A leptonic multi-wavelength model shows that an energy of about 4 × 1049 erg is stored in electrons and positrons. The apparent efficiency, which is the ratio of the TeV gamma-ray luminosity to the pulsar's spin-down luminosity, 0.08% ± 0.01%, is comparable to those of PWNe found in the Milky Way. The detection of a PWN at such a large distance is possible due to the pulsar's favourable spin-down luminosity and a bright infrared photon-field serving as an inverse-Compton-scattering target for accelerated leptons. By applying a calorimetric technique to these observations, the pulsar's birth period is estimated to be shorter than 10 ms.

KW - Gamma rays: general

KW - ISM: supernova remnants

KW - Magellanic Clouds

KW - Pulsars: individual: PSR J0537-6910

UR - http://www.scopus.com/inward/record.url?scp=84865703969&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84865703969&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/201219906

DO - 10.1051/0004-6361/201219906

M3 - Article

AN - SCOPUS:84865703969

SN - 0004-6361

VL - 545

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - L2

ER -

Discovery of gamma-ray emission from the extragalactic pulsar wind nebula N- 157B with H.E.S.S.

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