The 2014 TeV γ-Ray Flare of Mrk 501 Seen with H.E.S.S.: Temporal and Spectral Constraints on Lorentz Invariance Violation

H. Abdalla; F. Aharonian; F. Ait Benkhali; E. O. Angüner; M. Arakawa; C. Arcaro; C. Armand; M. Arrieta; M. Backes; M. Barnard; Y. Becherini; J. Becker Tjus; D. Berge; S. Bernhard; K. Bernlöhr; R. Blackwell; M. Böttcher; C. Boisson; J. Bolmont; S. Bonnefoy; P. Bordas; J. Bregeon; F. Brun; P. Brun; M. Bryan; M. Büchele; T. Bulik; T. Bylund; M. Capasso; S. Caroff; A. Carosi; M. Cerruti; N. Chakraborty; S. Chandra; R. C.G. Chaves; A. Chen; S. Colafrancesco; B. Condon; I. D. Davids; C. Deil; J. Devin; P. Dewilt; L. Dirson; A. Djannati-Ataï; A. Dmytriiev; A. Donath; V. Doroshenko; L. O.C. Drury; J. Dyks; K. Egberts; G. Emery; J. P. Ernenwein; S. Eschbach; S. Fegan; A. Fiasson; G. Fontaine; S. Funk; M. Füßling; S. Gabici; Y. A. Gallant; F. Gaté; G. Giavitto; D. Glawion; J. F. Glicenstein; D. Gottschall; M. H. Grondin; J. Hahn; M. Haupt; G. Heinzelmann; G. Henri; G. Hermann; J. A. Hinton; W. Hofmann; C. Hoischen; T. L. Holch; M. Holler; D. Horns; D. Huber; H. Iwasaki; A. Jacholkowska; M. Jamrozy; D. Jankowsky; F. Jankowsky; L. Jouvin; I. Jung-Richardt; M. A. Kastendieck; K. Katarzyński; M. Katsuragawa; U. Katz; D. Kerszberg; D. Khangulyan; B. Khélifi; J. King; S. Klepser; W. Kluźniak; Nu Komin; K. Kosack; S. Krakau; M. Kraus; P. P. Krüger; G. Lamanna; J. Lau; J. Lefaucheur; A. Lemiere; M. Lemoine-Goumard; J. P. Lenain; E. Leser; T. Lohse; M. Lorentz; R. López-Coto; I. Lypova; D. Malyshev; V. Marandon; A. Marcowith; C. Mariaud; G. Marti-Devesa; R. Marx; G. Maurin; P. J. Meintjes; A. M.W. Mitchell; R. Moderski; M. Mohamed; L. Mohrmann; E. Moulin; T. Murach; S. Nakashima; M. De Naurois; H. Ndiyavala; F. Niederwanger; J. Niemiec; L. Oakes; P. O'Brien; H. Odaka; S. Ohm; M. Ostrowski; I. Oya; M. Padovani; M. Panter; R. D. Parsons; C. Perennes; P. O. Petrucci; B. Peyaud; Q. Piel; S. Pita; V. Poireau; A. Priyana Noel; D. Prokhorov; H. Prokoph; G. Pühlhofer; M. Punch; A. Quirrenbach; S. Raab; R. Rauth; A. Reimer; O. Reimer; M. Renaud; F. Rieger; L. Rinchiuso; C. Romoli; G. Rowell; B. Rudak; E. Ruiz-Velasco; V. Sahakian; S. Saito; D. A. Sanchez; A. Santangelo; M. Sasaki; R. Schlickeiser; F. Schüssler; A. Schulz; U. Schwanke; S. Schwemmer; M. Seglar-Arroyo; M. Senniappan; A. S. Seyffert; N. Shafi; I. Shilon; K. Shiningayamwe; R. Simoni; A. Sinha; H. Sol; F. Spanier; A. Specovius; M. Spir-Jacob; Stawarz; R. Steenkamp; C. Stegmann; C. Steppa; T. Takahashi; J. P. Tavernet; T. Tavernier; A. M. Taylor; R. Terrier; L. Tibaldo; D. Tiziani; M. Tluczykont; C. Trichard; M. Tsirou; N. Tsuji; R. Tuffs; Y. Uchiyama; D. J. Van Der Walt; C. Van Eldik; C. Van Rensburg; B. Van Soelen; G. Vasileiadis; J. Veh; C. Venter; P. Vincent; J. Vink; F. Voisin; H. J. Völk; T. Vuillaume; Z. Wadiasingh; S. J. Wagner; R. M. Wagner; R. White; A. Wierzcholska; R. Yang; D. Zaborov; M. Zacharias; R. Zanin; A. A. Zdziarski; A. Zech; F. Zefi; A. Ziegler; J. Zorn; N. Żywucka

doi:10.3847/1538-4357/aaf1c4

The 2014 TeV γ-Ray Flare of Mrk 501 Seen with H.E.S.S. Temporal and Spectral Constraints on Lorentz Invariance Violation

H. Abdalla, F. Aharonian, F. Ait Benkhali, E. O. Angüner, M. Arakawa, C. Arcaro, C. Armand, M. Arrieta, M. Backes, M. Barnard, Y. Becherini, J. Becker Tjus, D. Berge, S. Bernhard, K. Bernlöhr, R. Blackwell, M. Böttcher, C. Boisson, J. Bolmont, S. BonnefoyP. Bordas, J. Bregeon, F. Brun, P. Brun, M. Bryan, M. Büchele, T. Bulik, T. Bylund, M. Capasso, S. Caroff, A. Carosi, M. Cerruti, N. Chakraborty, S. Chandra, R. C.G. Chaves, A. Chen, S. Colafrancesco, B. Condon, I. D. Davids, C. Deil, J. Devin, P. Dewilt, L. Dirson, A. Djannati-Ataï, A. Dmytriiev, A. Donath, V. Doroshenko, L. O.C. Drury, J. Dyks, K. Egberts, G. Emery, J. P. Ernenwein, S. Eschbach, S. Fegan, A. Fiasson, G. Fontaine, S. Funk, M. Füßling, S. Gabici, Y. A. Gallant, F. Gaté, G. Giavitto, D. Glawion, J. F. Glicenstein, D. Gottschall, M. H. Grondin, J. Hahn, M. Haupt, G. Heinzelmann, G. Henri, G. Hermann, J. A. Hinton, W. Hofmann, C. Hoischen, T. L. Holch, M. Holler, D. Horns, D. Huber, H. Iwasaki, A. Jacholkowska, M. Jamrozy, D. Jankowsky, F. Jankowsky, L. Jouvin, I. Jung-Richardt, M. A. Kastendieck, K. Katarzyński, M. Katsuragawa, U. Katz, D. Kerszberg, D. Khangulyan, B. Khélifi, J. King, S. Klepser, W. Kluźniak, Nu Komin, K. Kosack, S. Krakau, M. Kraus, P. P. Krüger, G. Lamanna, J. Lau, J. Lefaucheur, A. Lemiere, M. Lemoine-Goumard, J. P. Lenain, E. Leser, T. Lohse, M. Lorentz, R. López-Coto, I. Lypova, D. Malyshev, V. Marandon, A. Marcowith, C. Mariaud, G. Marti-Devesa, R. Marx, G. Maurin, P. J. Meintjes, A. M.W. Mitchell, R. Moderski, M. Mohamed, L. Mohrmann, E. Moulin, T. Murach, S. Nakashima, M. De Naurois, H. Ndiyavala, F. Niederwanger, J. Niemiec, L. Oakes, P. O'Brien, H. Odaka, S. Ohm, M. Ostrowski, I. Oya, M. Padovani, M. Panter, R. D. Parsons, C. Perennes, P. O. Petrucci, B. Peyaud, Q. Piel, S. Pita, V. Poireau, A. Priyana Noel, D. Prokhorov, H. Prokoph, G. Pühlhofer, M. Punch, A. Quirrenbach, S. Raab, R. Rauth, A. Reimer, O. Reimer, M. Renaud, F. Rieger, L. Rinchiuso, C. Romoli, G. Rowell, B. Rudak, E. Ruiz-Velasco, V. Sahakian, S. Saito, D. A. Sanchez, A. Santangelo, M. Sasaki, R. Schlickeiser, F. Schüssler, A. Schulz, U. Schwanke, S. Schwemmer, M. Seglar-Arroyo, M. Senniappan, A. S. Seyffert, N. Shafi, I. Shilon, K. Shiningayamwe, R. Simoni, A. Sinha, H. Sol, F. Spanier, A. Specovius, M. Spir-Jacob, Stawarz, R. Steenkamp, C. Stegmann, C. Steppa, T. Takahashi, J. P. Tavernet, T. Tavernier, A. M. Taylor, R. Terrier, L. Tibaldo, D. Tiziani, M. Tluczykont, C. Trichard, M. Tsirou, N. Tsuji, R. Tuffs, Y. Uchiyama, D. J. Van Der Walt, C. Van Eldik, C. Van Rensburg, B. Van Soelen, G. Vasileiadis, J. Veh, C. Venter, P. Vincent, J. Vink, F. Voisin, H. J. Völk, T. Vuillaume, Z. Wadiasingh, S. J. Wagner, R. M. Wagner, R. White, A. Wierzcholska, R. Yang, D. Zaborov, M. Zacharias, R. Zanin, A. A. Zdziarski, A. Zech, F. Zefi, A. Ziegler, J. Zorn, N. Żywucka

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

49 Scopus citations

Abstract

The blazar Mrk 501 (z = 0.034) was observed at very-high-energy (VHE, E ≳ 100 GeV) gamma-ray wavelengths during a bright flare on the night of 2014 June 23-24 (MJD 56832) with the H.E.S.S. phase-II array of Cherenkov telescopes. Data taken that night by H.E.S.S. at large zenith angle reveal an exceptional number of gamma-ray photons at multi-TeV energies, with rapid flux variability and an energy coverage extending significantly up to 20 TeV. This data set is used to constrain Lorentz invariance violation (LIV) using two independent channels: a temporal approach considers the possibility of an energy dependence in the arrival time of gamma-rays, whereas a spectral approach considers the possibility of modifications to the interaction of VHE gamma-rays with extragalactic background light (EBL) photons. The non-detection of energy-dependent time delays and the non-observation of deviations between the measured spectrum and that of a supposed power-law intrinsic spectrum with standard EBL attenuation are used independently to derive strong constraints on the energy scale of LIV (E _QG) in the subluminal scenario for linear and quadratic perturbations in the dispersion relation of photons. For the case of linear perturbations, the 95% confidence level limits obtained are E _QG,1 > 3.6 ×10¹⁷ GeV using the temporal approach and E _QG,1 > 2.6 ×10¹⁹ GeV using the spectral approach. For the case of quadratic perturbations, the limits obtained are E _QG,2 > 8.5 ×10¹⁰ GeV using the temporal approach and E _QG,2 > 7.8 ×10¹¹ GeV using the spectral approach.

Original language	English
Article number	93
Journal	Astrophysical Journal
Volume	870
Issue number	2
DOIs	https://doi.org/10.3847/1538-4357/aaf1c4
State	Published - 10 Jan 2019
Externally published	Yes

Keywords

astroparticle physics
BL Lacertae objects: individual (Mrk 501)
gamma rays: galaxies

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.3847/1538-4357/aaf1c4

Cite this

Abdalla, H., Aharonian, F., Benkhali, F. A., Angüner, E. O., Arakawa, M., Arcaro, C., Armand, C., Arrieta, M., Backes, M., Barnard, M., Becherini, Y., Tjus, J. B., Berge, D., Bernhard, S., Bernlöhr, K., Blackwell, R., Böttcher, M., Boisson, C., Bolmont, J., ... Żywucka, N. (2019). The 2014 TeV γ-Ray Flare of Mrk 501 Seen with H.E.S.S. Temporal and Spectral Constraints on Lorentz Invariance Violation. Astrophysical Journal, 870(2), Article 93. https://doi.org/10.3847/1538-4357/aaf1c4

@article{e369741b6f014e5fa7aa218b0d2e456f,

title = "The 2014 TeV γ-Ray Flare of Mrk 501 Seen with H.E.S.S.: Temporal and Spectral Constraints on Lorentz Invariance Violation",

abstract = "The blazar Mrk 501 (z = 0.034) was observed at very-high-energy (VHE, E ≳ 100 GeV) gamma-ray wavelengths during a bright flare on the night of 2014 June 23-24 (MJD 56832) with the H.E.S.S. phase-II array of Cherenkov telescopes. Data taken that night by H.E.S.S. at large zenith angle reveal an exceptional number of gamma-ray photons at multi-TeV energies, with rapid flux variability and an energy coverage extending significantly up to 20 TeV. This data set is used to constrain Lorentz invariance violation (LIV) using two independent channels: a temporal approach considers the possibility of an energy dependence in the arrival time of gamma-rays, whereas a spectral approach considers the possibility of modifications to the interaction of VHE gamma-rays with extragalactic background light (EBL) photons. The non-detection of energy-dependent time delays and the non-observation of deviations between the measured spectrum and that of a supposed power-law intrinsic spectrum with standard EBL attenuation are used independently to derive strong constraints on the energy scale of LIV (E QG) in the subluminal scenario for linear and quadratic perturbations in the dispersion relation of photons. For the case of linear perturbations, the 95% confidence level limits obtained are E QG,1 > 3.6 ×1017 GeV using the temporal approach and E QG,1 > 2.6 ×1019 GeV using the spectral approach. For the case of quadratic perturbations, the limits obtained are E QG,2 > 8.5 ×1010 GeV using the temporal approach and E QG,2 > 7.8 ×1011 GeV using the spectral approach.",

keywords = "astroparticle physics, BL Lacertae objects: individual (Mrk 501), gamma rays: galaxies",

author = "H. Abdalla and F. Aharonian and Benkhali, {F. Ait} and Ang{\"u}ner, {E. O.} and M. Arakawa and C. Arcaro and C. Armand and M. Arrieta and M. Backes and M. Barnard and Y. Becherini and Tjus, {J. Becker} and D. Berge and S. Bernhard and K. Bernl{\"o}hr and R. Blackwell and M. B{\"o}ttcher and C. Boisson and J. Bolmont and S. Bonnefoy and P. Bordas and J. Bregeon and F. Brun and P. Brun and M. Bryan and M. B{\"u}chele and T. Bulik and T. Bylund and M. Capasso and S. Caroff and A. Carosi and M. Cerruti and N. Chakraborty and S. Chandra and Chaves, {R. C.G.} and A. Chen and S. Colafrancesco and B. Condon and Davids, {I. D.} and C. Deil and J. Devin and P. Dewilt and L. Dirson and A. Djannati-Ata{\"i} and A. Dmytriiev and A. Donath and V. Doroshenko and Drury, {L. O.C.} and J. Dyks and K. Egberts and G. Emery and Ernenwein, {J. P.} and S. Eschbach and S. Fegan and A. Fiasson and G. Fontaine and S. Funk and M. F{\"u}{\ss}ling and S. Gabici and Gallant, {Y. A.} and F. Gat{\'e} and G. Giavitto and D. Glawion and Glicenstein, {J. F.} and D. Gottschall and Grondin, {M. H.} and J. Hahn and M. Haupt and G. Heinzelmann and G. Henri and G. Hermann and Hinton, {J. A.} and W. Hofmann and C. Hoischen and Holch, {T. L.} and M. Holler and D. Horns and D. Huber and H. Iwasaki and A. Jacholkowska and M. Jamrozy and D. Jankowsky and F. Jankowsky and L. Jouvin and I. Jung-Richardt and Kastendieck, {M. A.} and K. Katarzy{\'n}ski and M. Katsuragawa and U. Katz and D. Kerszberg and D. Khangulyan and B. Kh{\'e}lifi and J. King and S. Klepser and W. Klu{\'z}niak and Nu Komin and K. Kosack and S. Krakau and M. Kraus and Kr{\"u}ger, {P. P.} and G. Lamanna and J. Lau and J. Lefaucheur and A. Lemiere and M. Lemoine-Goumard and Lenain, {J. P.} and E. Leser and T. Lohse and M. Lorentz and R. L{\'o}pez-Coto and I. Lypova and D. Malyshev and V. Marandon and A. Marcowith and C. Mariaud and G. Marti-Devesa and R. Marx and G. Maurin and Meintjes, {P. J.} and Mitchell, {A. M.W.} and R. Moderski and M. Mohamed and L. Mohrmann and E. Moulin and T. Murach and S. Nakashima and Naurois, {M. De} and H. Ndiyavala and F. Niederwanger and J. Niemiec and L. Oakes and P. O'Brien and H. Odaka and S. Ohm and M. Ostrowski and I. Oya and M. Padovani and M. Panter and Parsons, {R. D.} and C. Perennes and Petrucci, {P. O.} and B. Peyaud and Q. Piel and S. Pita and V. Poireau and {Priyana Noel}, A. and D. Prokhorov and H. Prokoph and G. P{\"u}hlhofer and M. Punch and A. Quirrenbach and S. Raab and R. Rauth and A. Reimer and O. Reimer and M. Renaud and F. Rieger and L. Rinchiuso and C. Romoli and G. Rowell and B. Rudak and E. Ruiz-Velasco and V. Sahakian and S. Saito and Sanchez, {D. A.} and A. Santangelo and M. Sasaki and R. Schlickeiser and F. Sch{\"u}ssler and A. Schulz and U. Schwanke and S. Schwemmer and M. Seglar-Arroyo and M. Senniappan and Seyffert, {A. S.} and N. Shafi and I. Shilon and K. Shiningayamwe and R. Simoni and A. Sinha and H. Sol and F. Spanier and A. Specovius and M. Spir-Jacob and Stawarz and R. Steenkamp and C. Stegmann and C. Steppa and T. Takahashi and Tavernet, {J. P.} and T. Tavernier and Taylor, {A. M.} and R. Terrier and L. Tibaldo and D. Tiziani and M. Tluczykont and C. Trichard and M. Tsirou and N. Tsuji and R. Tuffs and Y. Uchiyama and {Van Der Walt}, {D. J.} and {Van Eldik}, C. and {Van Rensburg}, C. and {Van Soelen}, B. and G. Vasileiadis and J. Veh and C. Venter and P. Vincent and J. Vink and F. Voisin and V{\"o}lk, {H. J.} and T. Vuillaume and Z. Wadiasingh and Wagner, {S. J.} and Wagner, {R. M.} and R. White and A. Wierzcholska and R. Yang and D. Zaborov and M. Zacharias and R. Zanin and Zdziarski, {A. A.} and A. Zech and F. Zefi and A. Ziegler and J. Zorn and N. {\.Z}ywucka",

year = "2019",

month = jan,

day = "10",

doi = "10.3847/1538-4357/aaf1c4",

language = "English",

volume = "870",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

number = "2",

}

Abdalla, H, Aharonian, F, Benkhali, FA, Angüner, EO, Arakawa, M, Arcaro, C, Armand, C, Arrieta, M, Backes, M, Barnard, M, Becherini, Y, Tjus, JB, Berge, D, Bernhard, S, Bernlöhr, K, Blackwell, R, Böttcher, 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, Cerruti, M, Chakraborty, N, Chandra, S, Chaves, RCG, Chen, A, Colafrancesco, S, Condon, B, Davids, ID, Deil, C, Devin, J, Dewilt, P, Dirson, L, Djannati-Ataï, A, Dmytriiev, A, Donath, A, Doroshenko, V, Drury, LOC, Dyks, J, Egberts, K, Emery, G, Ernenwein, JP, Eschbach, S, Fegan, S, Fiasson, A, Fontaine, G, Funk, S, Füßling, M, Gabici, S, Gallant, YA, Gaté, 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, Katarzyński, K, Katsuragawa, M, Katz, U, Kerszberg, D, Khangulyan, D, Khélifi, B, King, J, Klepser, S, Kluźniak, W, Komin, N, Kosack, K, Krakau, S, Kraus, M, Krüger, PP, Lamanna, G, Lau, J, Lefaucheur, J, Lemiere, A, Lemoine-Goumard, M, Lenain, JP, Leser, E, Lohse, T, Lorentz, M, López-Coto, R, Lypova, I, Malyshev, D, Marandon, V, Marcowith, A, Mariaud, C, Marti-Devesa, G, Marx, R, Maurin, G, Meintjes, PJ, Mitchell, AMW, Moderski, R, Mohamed, M, Mohrmann, L, Moulin, E, Murach, T, Nakashima, S, Naurois, MD, 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, Priyana Noel, A, Prokhorov, D, Prokoph, H, Pühlhofer, 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, Schüssler, 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, Steenkamp, R, Stegmann, C, Steppa, C, 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, Vincent, P, Vink, J, Voisin, F, Völk, HJ, Vuillaume, T, Wadiasingh, Z, Wagner, SJ, Wagner, RM, White, R, Wierzcholska, A, Yang, R, Zaborov, D, Zacharias, M, Zanin, R, Zdziarski, AA, Zech, A, Zefi, F, Ziegler, A, Zorn, J & Żywucka, N 2019, 'The 2014 TeV γ-Ray Flare of Mrk 501 Seen with H.E.S.S. Temporal and Spectral Constraints on Lorentz Invariance Violation', Astrophysical Journal, vol. 870, no. 2, 93. https://doi.org/10.3847/1538-4357/aaf1c4

TY - JOUR

T1 - The 2014 TeV γ-Ray Flare of Mrk 501 Seen with H.E.S.S.

T2 - Temporal and Spectral Constraints on Lorentz Invariance Violation

AU - Abdalla, H.

AU - Aharonian, F.

AU - Benkhali, F. Ait

AU - Angüner, E. O.

AU - Arakawa, M.

AU - Arcaro, C.

AU - Armand, C.

AU - Arrieta, M.

AU - Backes, M.

AU - Barnard, M.

AU - Becherini, Y.

AU - Tjus, J. Becker

AU - Berge, D.

AU - Bernhard, S.

AU - Bernlöhr, K.

AU - Blackwell, R.

AU - Böttcher, M.

AU - Boisson, C.

AU - Bolmont, J.

AU - Bonnefoy, S.

AU - Bordas, P.

AU - Bregeon, J.

AU - Brun, F.

AU - Brun, P.

AU - Bryan, M.

AU - Büchele, M.

AU - Bulik, T.

AU - Bylund, T.

AU - Capasso, M.

AU - Caroff, S.

AU - Carosi, A.

AU - Cerruti, M.

AU - Chakraborty, N.

AU - Chandra, S.

AU - Chaves, R. C.G.

AU - Chen, A.

AU - Colafrancesco, S.

AU - Condon, B.

AU - Davids, I. D.

AU - Deil, C.

AU - Devin, J.

AU - Dewilt, P.

AU - Dirson, L.

AU - Djannati-Ataï, A.

AU - Dmytriiev, A.

AU - Donath, A.

AU - Doroshenko, V.

AU - Drury, L. O.C.

AU - Dyks, J.

AU - Egberts, K.

AU - Emery, G.

AU - Ernenwein, J. P.

AU - Eschbach, S.

AU - Fegan, S.

AU - Fiasson, A.

AU - Fontaine, G.

AU - Funk, S.

AU - Füßling, M.

AU - Gabici, S.

AU - Gallant, Y. A.

AU - Gaté, F.

AU - Giavitto, G.

AU - Glawion, D.

AU - Glicenstein, J. F.

AU - Gottschall, D.

AU - Grondin, M. H.

AU - Hahn, J.

AU - Haupt, M.

AU - Heinzelmann, G.

AU - Henri, G.

AU - Hermann, G.

AU - Hinton, J. A.

AU - Hofmann, W.

AU - Hoischen, C.

AU - Holch, T. L.

AU - Holler, M.

AU - Horns, D.

AU - Huber, D.

AU - Iwasaki, H.

AU - Jacholkowska, A.

AU - Jamrozy, M.

AU - Jankowsky, D.

AU - Jankowsky, F.

AU - Jouvin, L.

AU - Jung-Richardt, I.

AU - Kastendieck, M. A.

AU - Katarzyński, K.

AU - Katsuragawa, M.

AU - Katz, U.

AU - Kerszberg, D.

AU - Khangulyan, D.

AU - Khélifi, B.

AU - King, J.

AU - Klepser, S.

AU - Kluźniak, W.

AU - Komin, Nu

AU - Kosack, K.

AU - Krakau, S.

AU - Kraus, M.

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PY - 2019/1/10

Y1 - 2019/1/10

N2 - The blazar Mrk 501 (z = 0.034) was observed at very-high-energy (VHE, E ≳ 100 GeV) gamma-ray wavelengths during a bright flare on the night of 2014 June 23-24 (MJD 56832) with the H.E.S.S. phase-II array of Cherenkov telescopes. Data taken that night by H.E.S.S. at large zenith angle reveal an exceptional number of gamma-ray photons at multi-TeV energies, with rapid flux variability and an energy coverage extending significantly up to 20 TeV. This data set is used to constrain Lorentz invariance violation (LIV) using two independent channels: a temporal approach considers the possibility of an energy dependence in the arrival time of gamma-rays, whereas a spectral approach considers the possibility of modifications to the interaction of VHE gamma-rays with extragalactic background light (EBL) photons. The non-detection of energy-dependent time delays and the non-observation of deviations between the measured spectrum and that of a supposed power-law intrinsic spectrum with standard EBL attenuation are used independently to derive strong constraints on the energy scale of LIV (E QG) in the subluminal scenario for linear and quadratic perturbations in the dispersion relation of photons. For the case of linear perturbations, the 95% confidence level limits obtained are E QG,1 > 3.6 ×1017 GeV using the temporal approach and E QG,1 > 2.6 ×1019 GeV using the spectral approach. For the case of quadratic perturbations, the limits obtained are E QG,2 > 8.5 ×1010 GeV using the temporal approach and E QG,2 > 7.8 ×1011 GeV using the spectral approach.

AB - The blazar Mrk 501 (z = 0.034) was observed at very-high-energy (VHE, E ≳ 100 GeV) gamma-ray wavelengths during a bright flare on the night of 2014 June 23-24 (MJD 56832) with the H.E.S.S. phase-II array of Cherenkov telescopes. Data taken that night by H.E.S.S. at large zenith angle reveal an exceptional number of gamma-ray photons at multi-TeV energies, with rapid flux variability and an energy coverage extending significantly up to 20 TeV. This data set is used to constrain Lorentz invariance violation (LIV) using two independent channels: a temporal approach considers the possibility of an energy dependence in the arrival time of gamma-rays, whereas a spectral approach considers the possibility of modifications to the interaction of VHE gamma-rays with extragalactic background light (EBL) photons. The non-detection of energy-dependent time delays and the non-observation of deviations between the measured spectrum and that of a supposed power-law intrinsic spectrum with standard EBL attenuation are used independently to derive strong constraints on the energy scale of LIV (E QG) in the subluminal scenario for linear and quadratic perturbations in the dispersion relation of photons. For the case of linear perturbations, the 95% confidence level limits obtained are E QG,1 > 3.6 ×1017 GeV using the temporal approach and E QG,1 > 2.6 ×1019 GeV using the spectral approach. For the case of quadratic perturbations, the limits obtained are E QG,2 > 8.5 ×1010 GeV using the temporal approach and E QG,2 > 7.8 ×1011 GeV using the spectral approach.

KW - astroparticle physics

KW - BL Lacertae objects: individual (Mrk 501)

KW - gamma rays: galaxies

UR - http://www.scopus.com/inward/record.url?scp=85060189217&partnerID=8YFLogxK

U2 - 10.3847/1538-4357/aaf1c4

DO - 10.3847/1538-4357/aaf1c4

M3 - Article

AN - SCOPUS:85060189217

SN - 0004-637X

VL - 870

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 93

ER -