H.E.S.S. Limits on Linelike Dark Matter Signatures in the 100 GeV to 2 TeV Energy Range Close to the Galactic Center

H. Abdalla; A. Abramowski; F. Aharonian; F. Ait Benkhali; A. G. Akhperjanian; T. Andersson; E. O. Angüner; M. Arrieta; P. Aubert; M. Backes; A. Balzer; M. Barnard; Y. Becherini; J. Becker Tjus; D. Berge; S. Bernhard; K. Bernlöhr; E. Birsin; R. Blackwell; M. Böttcher; C. Boisson; J. Bolmont; P. Bordas; J. Bregeon; F. Brun; P. Brun; M. Bryan; T. Bulik; M. Capasso; J. Carr; S. Casanova; N. Chakraborty; R. Chalme-Calvet; R. C.G. Chaves; A. Chen; J. Chevalier; M. Chrétien; S. Colafrancesco; G. Cologna; B. Condon; J. Conrad; C. Couturier; Y. Cui; I. D. Davids; B. Degrange; C. Deil; J. Devin; P. Dewilt; A. Djannati-Ataï; W. Domainko; A. Donath; L. O. Drury; G. Dubus; K. Dutson; J. Dyks; M. Dyrda; T. Edwards; K. Egberts; P. Eger; J. P. Ernenwein; S. Eschbach; C. Farnier; S. Fegan; M. V. Fernandes; A. Fiasson; G. Fontaine; A. Förster; S. Funk; M. Füßling; S. Gabici; M. Gajdus; Y. A. Gallant; T. Garrigoux; G. Giavitto; B. Giebels; J. F. Glicenstein; D. Gottschall; A. Goyal; M. H. Grondin; M. Grudzińska; D. Hadasch; J. Hahn; J. Hawkes; G. Heinzelmann; G. Henri; G. Hermann; O. Hervet; A. Hillert; J. A. Hinton; W. Hofmann; C. Hoischen; M. Holler; D. Horns; A. Ivascenko; A. Jacholkowska; M. Jamrozy; M. Janiak; D. Jankowsky; F. Jankowsky; M. Jingo; T. Jogler; L. Jouvin; I. Jung-Richardt; M. A. Kastendieck; K. Katarzyński; U. Katz; D. Kerszberg; B. Khélifi; M. Kieffer; J. King; S. Klepser; D. Klochkov; W. Kluźniak; D. Kolitzus; Nu Komin; K. Kosack; S. Krakau; M. Kraus; F. Krayzel; P. P. Krüger; H. Laffon; G. Lamanna; J. Lau; J. P. Lees; J. Lefaucheur; V. Lefranc; A. Lemière; M. Lemoine-Goumard; J. P. Lenain; E. Leser; R. Liu; T. Lohse; M. Lorentz; I. Lypova; V. Marandon; A. Marcowith; C. Mariaud; R. Marx; G. Maurin; N. Maxted; M. Mayer; P. J. Meintjes; M. Meyer; A. M.W. Mitchell; R. Moderski; M. Mohamed; K. Morå; E. Moulin; T. Murach; M. De Naurois; F. Niederwanger; J. Niemiec; L. Oakes; P. O'Brien; H. Odaka; S. Ohm; M. Ostrowski; S. Öttl; I. Oya; M. Padovani; M. Panter; R. D. Parsons; M. Paz Arribas; N. W. Pekeur; G. Pelletier; C. Perennes; P. O. Petrucci; B. Peyaud; S. Pita; H. Poon; D. Prokhorov; H. Prokoph; G. Pühlhofer; M. Punch; A. Quirrenbach; S. Raab; A. Reimer; O. Reimer; M. Renaud; R. De Los Reyes; F. Rieger; C. Romoli; S. Rosier-Lees; G. Rowell; B. Rudak; C. B. Rulten; V. Sahakian; D. Salek; D. A. Sanchez; A. Santangelo; M. Sasaki; R. Schlickeiser; F. Schüssler; A. Schulz; U. Schwanke; S. Schwemmer; M. Settimo; A. S. Seyffert; N. Shafi; I. Shilon; R. Simoni; H. Sol; F. Spanier; G. Spengler; F. Spies; A. L. Stawarz; R. Steenkamp; C. Stegmann; F. Stinzing; K. Stycz; I. Sushch; J. P. Tavernet; T. Tavernier; A. M. Taylor; R. Terrier; L. Tibaldo; M. Tluczykont; C. Trichard; R. Tuffs; J. Van Der Walt; C. Van Eldik; B. Van Soelen; G. Vasileiadis; J. Veh; C. Venter; A. Viana; P. Vincent; J. Vink; F. Voisin; H. J. Völk; T. Vuillaume; Z. Wadiasingh; S. J. Wagner; P. Wagner; R. M. Wagner; R. White; A. Wierzcholska; P. Willmann; A. Wörnlein; D. Wouters; R. Yang; V. Zabalza; D. Zaborov; M. Zacharias; A. A. Zdziarski; A. Zech; F. Zefi; A. Ziegler; N. Żywucka

doi:10.1103/PhysRevLett.117.151302

H.E.S.S. Limits on Linelike Dark Matter Signatures in the 100 GeV to 2 TeV Energy Range Close to the Galactic Center

H. Abdalla, A. Abramowski, F. Aharonian, F. Ait Benkhali, A. G. Akhperjanian, T. Andersson, E. O. Angüner, M. Arrieta, P. Aubert, M. Backes, A. Balzer, M. Barnard, Y. Becherini, J. Becker Tjus, D. Berge, S. Bernhard, K. Bernlöhr, E. Birsin, R. Blackwell, M. BöttcherC. Boisson, J. Bolmont, P. Bordas, J. Bregeon, F. Brun, P. Brun, M. Bryan, T. Bulik, M. Capasso, J. Carr, S. Casanova, N. Chakraborty, R. Chalme-Calvet, R. C.G. Chaves, A. Chen, J. Chevalier, M. Chrétien, S. Colafrancesco, G. Cologna, B. Condon, J. Conrad, C. Couturier, Y. Cui, I. D. Davids, B. Degrange, C. Deil, J. Devin, P. Dewilt, A. Djannati-Ataï, W. Domainko, A. Donath, L. O. Drury, G. Dubus, K. Dutson, J. Dyks, M. Dyrda, T. Edwards, K. Egberts, P. Eger, J. P. Ernenwein, S. Eschbach, C. Farnier, S. Fegan, M. V. Fernandes, A. Fiasson, G. Fontaine, A. Förster, S. Funk, M. Füßling, S. Gabici, M. Gajdus, Y. A. Gallant, T. Garrigoux, G. Giavitto, B. Giebels, J. F. Glicenstein, D. Gottschall, A. Goyal, M. H. Grondin, M. Grudzińska, D. Hadasch, J. Hahn, J. Hawkes, G. Heinzelmann, G. Henri, G. Hermann, O. Hervet, A. Hillert, J. A. Hinton, W. Hofmann, C. Hoischen, M. Holler, D. Horns, A. Ivascenko, A. Jacholkowska, M. Jamrozy, M. Janiak, D. Jankowsky, F. Jankowsky, M. Jingo, T. Jogler, L. Jouvin, I. Jung-Richardt, M. A. Kastendieck, K. Katarzyński, U. Katz, D. Kerszberg, B. Khélifi, M. Kieffer, J. King, S. Klepser, D. Klochkov, W. Kluźniak, D. Kolitzus, Nu Komin, K. Kosack, S. Krakau, M. Kraus, F. Krayzel, P. P. Krüger, H. Laffon, G. Lamanna, J. Lau, J. P. Lees, J. Lefaucheur, V. Lefranc, A. Lemière, M. Lemoine-Goumard, J. P. Lenain, E. Leser, R. Liu, T. Lohse, M. Lorentz, I. Lypova, V. Marandon, A. Marcowith, C. Mariaud, R. Marx, G. Maurin, N. Maxted, M. Mayer, P. J. Meintjes, M. Meyer, A. M.W. Mitchell, R. Moderski, M. Mohamed, K. Morå, E. Moulin, T. Murach, M. De Naurois, F. Niederwanger, J. Niemiec, L. Oakes, P. O'Brien, H. Odaka, S. Ohm, M. Ostrowski, S. Öttl, I. Oya, M. Padovani, M. Panter, R. D. Parsons, M. Paz Arribas, N. W. Pekeur, G. Pelletier, C. Perennes, P. O. Petrucci, B. Peyaud, S. Pita, H. Poon, D. Prokhorov, H. Prokoph, G. Pühlhofer, M. Punch, A. Quirrenbach, S. Raab, A. Reimer, O. Reimer, M. Renaud, R. De Los Reyes, F. Rieger, C. Romoli, S. Rosier-Lees, G. Rowell, B. Rudak, C. B. Rulten, V. Sahakian, D. Salek, D. A. Sanchez, A. Santangelo, M. Sasaki, R. Schlickeiser, F. Schüssler, A. Schulz, U. Schwanke, S. Schwemmer, M. Settimo, A. S. Seyffert, N. Shafi, I. Shilon, R. Simoni, H. Sol, F. Spanier, G. Spengler, F. Spies, A. L. Stawarz, R. Steenkamp, C. Stegmann, F. Stinzing, K. Stycz, I. Sushch, J. P. Tavernet, T. Tavernier, A. M. Taylor, R. Terrier, L. Tibaldo, M. Tluczykont, C. Trichard, R. Tuffs, J. Van Der Walt, C. Van Eldik, B. Van Soelen, G. Vasileiadis, J. Veh, C. Venter, A. Viana, P. Vincent, J. Vink, F. Voisin, H. J. Völk, T. Vuillaume, Z. Wadiasingh, S. J. Wagner, P. Wagner, R. M. Wagner, R. White, A. Wierzcholska, P. Willmann, A. Wörnlein, D. Wouters, R. Yang, V. Zabalza, D. Zaborov, M. Zacharias, A. A. Zdziarski, A. Zech, F. Zefi, A. Ziegler, N. Żywucka

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

40 Scopus citations

Abstract

A search for dark matter linelike signals iss performed in the vicinity of the Galactic Center by the H.E.S.S. experiment on observational data taken in 2014. An unbinned likelihood analysis iss developed to improve the sensitivity to linelike signals. The upgraded analysis along with newer data extend the energy coverage of the previous measurement down to 100 GeV. The 18 h of data collected with the H.E.S.S. array allow one to rule out at 95% C.L. the presence of a 130 GeV line (at l=-1.5°, b=0° and for a dark matter profile centered at this location) previously reported in Fermi-LAT data. This new analysis overlaps significantly in energy with previous Fermi-LAT and H.E.S.S. results. No significant excess associated with dark matter annihilations was found in the energy range of 100 GeV to 2 TeV and upper limits on the gamma-ray flux and the velocity weighted annihilation cross section are derived adopting an Einasto dark matter halo profile. Expected limits for present and future large statistics H.E.S.S. observations are also given.

Original language	English
Article number	151302
Journal	Physical Review Letters
Volume	117
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevLett.117.151302
State	Published - 7 Oct 2016
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1103/PhysRevLett.117.151302

Cite this

Abdalla, H., Abramowski, A., Aharonian, F., Ait Benkhali, F., Akhperjanian, A. G., Andersson, T., Angüner, E. O., Arrieta, M., Aubert, P., Backes, M., Balzer, A., Barnard, M., Becherini, Y., Becker Tjus, J., Berge, D., Bernhard, S., Bernlöhr, K., Birsin, E., Blackwell, R., ... Żywucka, N. (2016). H.E.S.S. Limits on Linelike Dark Matter Signatures in the 100 GeV to 2 TeV Energy Range Close to the Galactic Center. Physical Review Letters, 117(15), Article 151302. https://doi.org/10.1103/PhysRevLett.117.151302

@article{3334d14c450845dea4c40743edb6b7e1,

title = "H.E.S.S. Limits on Linelike Dark Matter Signatures in the 100 GeV to 2 TeV Energy Range Close to the Galactic Center",

abstract = "A search for dark matter linelike signals iss performed in the vicinity of the Galactic Center by the H.E.S.S. experiment on observational data taken in 2014. An unbinned likelihood analysis iss developed to improve the sensitivity to linelike signals. The upgraded analysis along with newer data extend the energy coverage of the previous measurement down to 100 GeV. The 18 h of data collected with the H.E.S.S. array allow one to rule out at 95% C.L. the presence of a 130 GeV line (at l=-1.5°, b=0° and for a dark matter profile centered at this location) previously reported in Fermi-LAT data. This new analysis overlaps significantly in energy with previous Fermi-LAT and H.E.S.S. results. No significant excess associated with dark matter annihilations was found in the energy range of 100 GeV to 2 TeV and upper limits on the gamma-ray flux and the velocity weighted annihilation cross section are derived adopting an Einasto dark matter halo profile. Expected limits for present and future large statistics H.E.S.S. observations are also given.",

author = "H. Abdalla and A. Abramowski and F. Aharonian and {Ait Benkhali}, F. and Akhperjanian, {A. G.} and T. Andersson and Ang{\"u}ner, {E. O.} and M. Arrieta and P. Aubert and M. Backes and A. Balzer and M. Barnard and Y. Becherini and {Becker Tjus}, J. and D. Berge and S. Bernhard and K. Bernl{\"o}hr and E. Birsin and R. Blackwell and M. B{\"o}ttcher and C. Boisson and J. Bolmont and P. Bordas and J. Bregeon and F. Brun and P. Brun and M. Bryan and T. Bulik and M. Capasso and J. Carr and S. Casanova and N. Chakraborty and R. Chalme-Calvet and Chaves, {R. C.G.} and A. Chen and J. Chevalier and M. Chr{\'e}tien and S. Colafrancesco and G. Cologna and B. Condon and J. Conrad and C. Couturier and Y. Cui and Davids, {I. D.} and B. Degrange and C. Deil and J. Devin and P. Dewilt and A. Djannati-Ata{\"i} and W. Domainko and A. Donath and Drury, {L. O.} and G. Dubus and K. Dutson and J. Dyks and M. Dyrda and T. Edwards and K. Egberts and P. Eger and Ernenwein, {J. P.} and S. Eschbach and C. Farnier and S. Fegan and Fernandes, {M. V.} and A. Fiasson and G. Fontaine and A. F{\"o}rster and S. Funk and M. F{\"u}{\ss}ling and S. Gabici and M. Gajdus and Gallant, {Y. A.} and T. Garrigoux and G. Giavitto and B. Giebels and Glicenstein, {J. F.} and D. Gottschall and A. Goyal and Grondin, {M. H.} and M. Grudzi{\'n}ska and D. Hadasch and J. Hahn and J. Hawkes and G. Heinzelmann and G. Henri and G. Hermann and O. Hervet and A. Hillert and Hinton, {J. A.} and W. Hofmann and C. Hoischen and M. Holler and D. Horns and A. Ivascenko and A. Jacholkowska and M. Jamrozy and M. Janiak and D. Jankowsky and F. Jankowsky and M. Jingo and T. Jogler and L. Jouvin and I. Jung-Richardt and Kastendieck, {M. A.} and K. Katarzy{\'n}ski and U. Katz and D. Kerszberg and B. Kh{\'e}lifi and M. Kieffer and J. King and S. Klepser and D. Klochkov and W. Klu{\'z}niak and D. Kolitzus and Nu Komin and K. Kosack and S. Krakau and M. Kraus and F. Krayzel and Kr{\"u}ger, {P. P.} and H. Laffon and G. Lamanna and J. Lau and Lees, {J. P.} and J. Lefaucheur and V. Lefranc and A. Lemi{\`e}re and M. Lemoine-Goumard and Lenain, {J. P.} and E. Leser and R. Liu and T. Lohse and M. Lorentz and I. Lypova and V. Marandon and A. Marcowith and C. Mariaud and R. Marx and G. Maurin and N. Maxted and M. Mayer and Meintjes, {P. J.} and M. Meyer and Mitchell, {A. M.W.} and R. Moderski and M. Mohamed and K. Mor{\aa} and E. Moulin and T. Murach and {De Naurois}, M. and F. Niederwanger and J. Niemiec and L. Oakes and P. O'Brien and H. Odaka and S. Ohm and M. Ostrowski and S. {\"O}ttl and I. Oya and M. Padovani and M. Panter and Parsons, {R. D.} and {Paz Arribas}, M. and Pekeur, {N. W.} and G. Pelletier and C. Perennes and Petrucci, {P. O.} and B. Peyaud and S. Pita and H. Poon and D. Prokhorov and H. Prokoph and G. P{\"u}hlhofer and M. Punch and A. Quirrenbach and S. Raab and A. Reimer and O. Reimer and M. Renaud and {De Los Reyes}, R. and F. Rieger and C. Romoli and S. Rosier-Lees and G. Rowell and B. Rudak and Rulten, {C. B.} and V. Sahakian and D. Salek 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. Settimo and Seyffert, {A. S.} and N. Shafi and I. Shilon and R. Simoni and H. Sol and F. Spanier and G. Spengler and F. Spies and Stawarz, {A. L.} and R. Steenkamp and C. Stegmann and F. Stinzing and K. Stycz and I. Sushch and Tavernet, {J. P.} and T. Tavernier and Taylor, {A. M.} and R. Terrier and L. Tibaldo and M. Tluczykont and C. Trichard and R. Tuffs and {Van Der Walt}, J. and {Van Eldik}, C. and {Van Soelen}, B. and G. Vasileiadis and J. Veh and C. Venter and A. Viana 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 P. Wagner and Wagner, {R. M.} and R. White and A. Wierzcholska and P. Willmann and A. W{\"o}rnlein and D. Wouters and R. Yang and V. Zabalza and D. Zaborov and M. Zacharias and Zdziarski, {A. A.} and A. Zech and F. Zefi and A. Ziegler and N. {\.Z}ywucka",

note = "Publisher Copyright: {\textcopyright} 2016 American Physical Society.",

year = "2016",

month = oct,

day = "7",

doi = "10.1103/PhysRevLett.117.151302",

language = "English",

volume = "117",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "15",

}

Abdalla, H, Abramowski, A, Aharonian, F, Ait Benkhali, F, Akhperjanian, AG, Andersson, T, Angüner, EO, Arrieta, M, Aubert, P, Backes, M, Balzer, A, Barnard, M, Becherini, Y, Becker Tjus, J, Berge, D, Bernhard, S, Bernlöhr, K, Birsin, E, Blackwell, R, Böttcher, M, Boisson, C, Bolmont, J, Bordas, P, Bregeon, J, Brun, F, Brun, P, Bryan, M, Bulik, T, Capasso, M, Carr, J, Casanova, S, Chakraborty, N, Chalme-Calvet, R, Chaves, RCG, Chen, A, Chevalier, J, Chrétien, M, Colafrancesco, S, Cologna, G, Condon, B, Conrad, J, Couturier, C, Cui, Y, Davids, ID, Degrange, B, Deil, C, Devin, J, Dewilt, P, Djannati-Ataï, A, Domainko, W, Donath, A, Drury, LO, Dubus, G, Dutson, K, Dyks, J, Dyrda, M, Edwards, T, Egberts, K, Eger, P, Ernenwein, JP, Eschbach, S, Farnier, C, Fegan, S, Fernandes, MV, Fiasson, A, Fontaine, G, Förster, A, Funk, S, Füßling, M, Gabici, S, Gajdus, M, Gallant, YA, Garrigoux, T, Giavitto, G, Giebels, B, Glicenstein, JF, Gottschall, D, Goyal, A, Grondin, MH, Grudzińska, M, Hadasch, D, Hahn, J, Hawkes, J, Heinzelmann, G, Henri, G, Hermann, G, Hervet, O, Hillert, A, Hinton, JA, Hofmann, W, Hoischen, C, Holler, M, Horns, D, Ivascenko, A, Jacholkowska, A, Jamrozy, M, Janiak, M, Jankowsky, D, Jankowsky, F, Jingo, M, Jogler, T, Jouvin, L, Jung-Richardt, I, Kastendieck, MA, Katarzyński, K, Katz, U, Kerszberg, D, Khélifi, B, Kieffer, M, King, J, Klepser, S, Klochkov, D, Kluźniak, W, Kolitzus, D, Komin, N, Kosack, K, Krakau, S, Kraus, M, Krayzel, F, Krüger, PP, Laffon, H, Lamanna, G, Lau, J, Lees, JP, Lefaucheur, J, Lefranc, V, Lemière, A, Lemoine-Goumard, M, Lenain, JP, Leser, E, Liu, R, Lohse, T, Lorentz, M, Lypova, I, Marandon, V, Marcowith, A, Mariaud, C, Marx, R, Maurin, G, Maxted, N, Mayer, M, Meintjes, PJ, Meyer, M, Mitchell, AMW, Moderski, R, Mohamed, M, Morå, K, Moulin, E, Murach, T, De Naurois, M, Niederwanger, F, Niemiec, J, Oakes, L, O'Brien, P, Odaka, H, Ohm, S, Ostrowski, M, Öttl, S, Oya, I, Padovani, M, Panter, M, Parsons, RD, Paz Arribas, M, Pekeur, NW, Pelletier, G, Perennes, C, Petrucci, PO, Peyaud, B, Pita, S, Poon, H, Prokhorov, D, Prokoph, H, Pühlhofer, G, Punch, M, Quirrenbach, A, Raab, S, Reimer, A, Reimer, O, Renaud, M, De Los Reyes, R, Rieger, F, Romoli, C, Rosier-Lees, S, Rowell, G, Rudak, B, Rulten, CB, Sahakian, V, Salek, D, Sanchez, DA, Santangelo, A, Sasaki, M, Schlickeiser, R, Schüssler, F, Schulz, A, Schwanke, U, Schwemmer, S, Settimo, M, Seyffert, AS, Shafi, N, Shilon, I, Simoni, R, Sol, H, Spanier, F, Spengler, G, Spies, F, Stawarz, AL, Steenkamp, R, Stegmann, C, Stinzing, F, Stycz, K, Sushch, I, Tavernet, JP, Tavernier, T, Taylor, AM, Terrier, R, Tibaldo, L, Tluczykont, M, Trichard, C, Tuffs, R, Van Der Walt, J, Van Eldik, C, Van Soelen, B, Vasileiadis, G, Veh, J, Venter, C, Viana, A, Vincent, P, Vink, J, Voisin, F, Völk, HJ, Vuillaume, T, Wadiasingh, Z, Wagner, SJ, Wagner, P, Wagner, RM, White, R, Wierzcholska, A, Willmann, P, Wörnlein, A, Wouters, D, Yang, R, Zabalza, V, Zaborov, D, Zacharias, M, Zdziarski, AA, Zech, A, Zefi, F, Ziegler, A & Żywucka, N 2016, 'H.E.S.S. Limits on Linelike Dark Matter Signatures in the 100 GeV to 2 TeV Energy Range Close to the Galactic Center', Physical Review Letters, vol. 117, no. 15, 151302. https://doi.org/10.1103/PhysRevLett.117.151302

TY - JOUR

T1 - H.E.S.S. Limits on Linelike Dark Matter Signatures in the 100 GeV to 2 TeV Energy Range Close to the Galactic Center

AU - Abdalla, H.

AU - Abramowski, A.

AU - Aharonian, F.

AU - Ait Benkhali, F.

AU - Akhperjanian, A. G.

AU - Andersson, T.

AU - Angüner, E. O.

AU - Arrieta, M.

AU - Aubert, P.

AU - Backes, M.

AU - Balzer, A.

AU - Barnard, M.

AU - Becherini, Y.

AU - Becker Tjus, J.

AU - Berge, D.

AU - Bernhard, S.

AU - Bernlöhr, K.

AU - Birsin, E.

AU - Blackwell, R.

AU - Böttcher, M.

AU - Boisson, C.

AU - Bolmont, J.

AU - Bordas, P.

AU - Bregeon, J.

AU - Brun, F.

AU - Brun, P.

AU - Bryan, M.

AU - Bulik, T.

AU - Capasso, M.

AU - Carr, J.

AU - Casanova, S.

AU - Chakraborty, N.

AU - Chalme-Calvet, R.

AU - Chaves, R. C.G.

AU - Chen, A.

AU - Chevalier, J.

AU - Chrétien, M.

AU - Colafrancesco, S.

AU - Cologna, G.

AU - Condon, B.

AU - Conrad, J.

AU - Couturier, C.

AU - Cui, Y.

AU - Davids, I. D.

AU - Degrange, B.

AU - Deil, C.

AU - Devin, J.

AU - Dewilt, P.

AU - Djannati-Ataï, A.

AU - Domainko, W.

AU - Donath, A.

AU - Drury, L. O.

AU - Dubus, G.

AU - Dutson, K.

AU - Dyks, J.

AU - Dyrda, M.

AU - Edwards, T.

AU - Egberts, K.

AU - Eger, P.

AU - Ernenwein, J. P.

AU - Eschbach, S.

AU - Farnier, C.

AU - Fegan, S.

AU - Fernandes, M. V.

AU - Fiasson, A.

AU - Fontaine, G.

AU - Förster, A.

AU - Funk, S.

AU - Füßling, M.

AU - Gabici, S.

AU - Gajdus, M.

AU - Gallant, Y. A.

AU - Garrigoux, T.

AU - Giavitto, G.

AU - Giebels, B.

AU - Glicenstein, J. F.

AU - Gottschall, D.

AU - Goyal, A.

AU - Grondin, M. H.

AU - Grudzińska, M.

AU - Hadasch, D.

AU - Hahn, J.

AU - Hawkes, J.

AU - Heinzelmann, G.

AU - Henri, G.

AU - Hermann, G.

AU - Hervet, O.

AU - Hillert, A.

AU - Hinton, J. A.

AU - Hofmann, W.

AU - Hoischen, C.

AU - Holler, M.

AU - Horns, D.

AU - Ivascenko, A.

AU - Jacholkowska, A.

AU - Jamrozy, M.

AU - Janiak, M.

AU - Jankowsky, D.

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PY - 2016/10/7

Y1 - 2016/10/7

N2 - A search for dark matter linelike signals iss performed in the vicinity of the Galactic Center by the H.E.S.S. experiment on observational data taken in 2014. An unbinned likelihood analysis iss developed to improve the sensitivity to linelike signals. The upgraded analysis along with newer data extend the energy coverage of the previous measurement down to 100 GeV. The 18 h of data collected with the H.E.S.S. array allow one to rule out at 95% C.L. the presence of a 130 GeV line (at l=-1.5°, b=0° and for a dark matter profile centered at this location) previously reported in Fermi-LAT data. This new analysis overlaps significantly in energy with previous Fermi-LAT and H.E.S.S. results. No significant excess associated with dark matter annihilations was found in the energy range of 100 GeV to 2 TeV and upper limits on the gamma-ray flux and the velocity weighted annihilation cross section are derived adopting an Einasto dark matter halo profile. Expected limits for present and future large statistics H.E.S.S. observations are also given.

AB - A search for dark matter linelike signals iss performed in the vicinity of the Galactic Center by the H.E.S.S. experiment on observational data taken in 2014. An unbinned likelihood analysis iss developed to improve the sensitivity to linelike signals. The upgraded analysis along with newer data extend the energy coverage of the previous measurement down to 100 GeV. The 18 h of data collected with the H.E.S.S. array allow one to rule out at 95% C.L. the presence of a 130 GeV line (at l=-1.5°, b=0° and for a dark matter profile centered at this location) previously reported in Fermi-LAT data. This new analysis overlaps significantly in energy with previous Fermi-LAT and H.E.S.S. results. No significant excess associated with dark matter annihilations was found in the energy range of 100 GeV to 2 TeV and upper limits on the gamma-ray flux and the velocity weighted annihilation cross section are derived adopting an Einasto dark matter halo profile. Expected limits for present and future large statistics H.E.S.S. observations are also given.

UR - http://www.scopus.com/inward/record.url?scp=84992144167&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.117.151302

DO - 10.1103/PhysRevLett.117.151302

M3 - Article

AN - SCOPUS:84992144167

SN - 0031-9007

VL - 117

JO - Physical Review Letters

JF - Physical Review Letters

IS - 15

M1 - 151302

ER -

H.E.S.S. Limits on Linelike Dark Matter Signatures in the 100 GeV to 2 TeV Energy Range Close to the Galactic Center

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