Search for Line-like and Box-shaped Spectral Features from Nearby Galaxy Clusters with 11.4 Years of Fermi Large Area Telescope Data

H. Abdalla;F. Aharonian;F. Benkhali;E. Anguner;M. Arakawa;C. Arcaro;C. Armand;M. Arrieta;Michael Backes;M. Barnard;Y. Becherini;J. Tjus;D. Berge;S. Bernhard;K. Bernlohr;R. Blackwell;M. Bottcher;C. Boisson;J. Bolmont;S. Bonnefoy;P. Bordas;J. Bregeon;F. Brun;P. Brun;M. Bryan;M. Buchele;T. Bulik;T. Bylund;M. Capasso;S. Caroff;A. Carosi;S. Casanova;M. Cerruti;N. Chakraborty;S. Chandra;R. Chaves;A. Chen;S. Colafrancesco;B. Condon;I. Davids;C. Deil;J. Devin;P. deWilt;L. Dirson;A. Djannati-Atai;A. Dmytriiev;A. Donath;V. Doroshenko;L. Drury;J. Dyks;K. Egberts;G. Emery;J. Ernenwein;S. Eschbach;S. Fegan;A. Fiasson;G. Fontaine;S. Funk;M. Fussling;S. Gabici;Y. Gallant;F. Gat'e;G. Giavitto;D. Glawion;J. Glicenstein;D. Gottschall;M. Grondin;J. Hahn;M. Haupt;G. Heinzelmann;G. Henri;G. Hermann;J. Hinton;W. Hofmann;C. Hoischen;T. Holch;M. Holler;D. Horns;D. Huber;H. Iwasaki;A. Jacholkowska;M. Jamrozy;D. Jankowsky;F. Jankowsky;L. Jouvin;I. Jung-Richardt;M. Kastendieck;K. Katarzy'nski;M. Katsuragawa;U. Katz;D. Kerszberg;D. Khangulyan;B. Kh'elifi;J. King;S. Klepser;W. Klu'zniak;N. Komin;K. Kosack;S. Krakau;M. Kraus;P. Kruger;G. Lamanna;J. Lau;J. Lefaucheur;A. Lemière;M. Lemoine-Goumard;J. Lenain;E. Leser;T. Lohse;M. Lorentz;R. L'opez-Coto;I. Lypova;D. Malyshev;V. Marandon;A. Marcowith;C. Mariaud;G. Mart'i-Devesa;R. Marx;G. Maurin;P. Meintjes;A. Mitchell;R. Moderski;M. Mohamed;L. Mohrmann;E. Moulin;T. Murach;S. Nakashima;M. 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. Parsons;C. Perennes;P. Petrucci;B. Peyaud;Q. Piel;S. Pita;V. Poireau;A. Noel;D. Prokhorov;H. Prokoph;G. Puhlhofer;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. Sanchez;A. Santangelo;M. Sasaki;R. Schlickeiser;F. Schussler;A. Schulz;U. Schwanke;S. Schwemmer;M. Seglar-Arroyo;M. Senniappan;A. Seyffert;N. Shafi;I. Shilon;K. Shiningayamwe;R. Simoni;A. Sinha;H. Sol;F. Spanier;A. Specovius;M. Spir-Jacob;L. Stawarz;R. Steenkamp;C. Stegmann;C. Steppa;T. Takahashi;J. Tavernet;T. Tavernier;A. Taylor;R. Terrier;L. Tibaldo;D. Tiziani;M. Tluczykont;C. Trichard;M. Tsirou;N. Tsuji;R. Tuffs;Y. Uchiyama;D. D. Walt-D.;C. Eldik;C. V. Rensburg;B. V. Soelen;G. Vasileiadis;J. Veh;C. Venter;A. Viana;P. Vincent;J. Vink;F. Voisin;H. Volk;T. Vuillaume;Z. Wadiasingh;S. Wagner;R. Wagner;R. White;A. Wierzcholska;R. Yang;D. Zaborov;M. Zacharias;R. Zanin;A. Zdziarski;A. Zech;F. Zefi;A. Ziegler;J. Zorn;N. Żywucka;M. Cirelli;P. Panci;F. Sala;J. Silk;M. Taoso