Fermi LAT observations of cosmic-ray electrons from 7 GeV to 1 TeV

Ackermann, M; Ajello, M; Atwood, Wb; Baldini, Luca; Ballet, J; Barbiellini, G; Bastieri, D; Baughman, Bm; Bechtol, K; Bellardi, F; Bellazzini, R; Belli, F; Berenji, B; Blandford, Rd; Bloom, Ed; Bogart, Jr; Bonamente, E; Borgland, Aw; Brandt, Tj; Bregeon, J; Brez, A; Brigida, M; Bruel, P; Buehler, R; Burnett, Th; Busetto, G; Buson, S; Caliandro, Ga; Cameron, Ra; Caraveo, Pa; Carlson, P; Carrigan, S; Casandjian, Jm; Ceccanti, M; Cecchi, C; Celik, O; Charles, E; Chekhtman, A; Cheung, Cc; Chiang, J; Cillis, An; Ciprini, S; Claus, R; Cohen Tanugi, J; Conrad, J; Corbet, R; DeKlotz, M; Dermer, Cd; de Angelis, A; de Palma, F; Digel, Sw; Di Bernardo, G; Silva, Ede; Drell, Ps; Drlica Wagner, A; Dubois, R; Fabiani, D; Favuzzi, C; Fegan, Sj; Fortin, P; Fukazawa, Y; Funk, S; Fusco, P; Gaggero, D; Gargano, F; Gasparrini, D; Gehrels, N; Germani, S; Giglietto, N; Giommi, P; Giordano, F; Giroletti, M; Glanzman, T; Godfrey, G; Grasso, D; Grenier, Ia; Grondin, Mh; Grove, Je; Guiriec, S; Gustafsson, M; Hadasch, D; Harding, Ak; Hayashida, M; Hays, E; Horan, D; Hughes, Re; Johannesson, G; Johnson, As; Johnson, Rp; Johnson, Wn; Kamae, T; Katagiri, H; Kataoka, J; Kerr, M; Knodlseder, J; Kuss, M; Lande, J; Latronico, L; Lemoine Goumard, M; Garde, Ml; Longo, F; Loparco, F; Lott, B; Lovellette, Mn; Lubrano, P; Makeev, A; Mazziotta, Mn; McEnery, Je; Mehault, J; Michelson, Pf; Minuti, M; Mitthumsiri, W; Mizuno, T; Moiseev, Aa; Monte, C; Monzani, Me; Moretti, E; Morselli, A; Moskalenko, Iv; Murgia, S; Nakamori, T; Naumann Godo, M; Nolan, Pl; Norris, Jp; Nuss, E; Ohsugi, T; Okumura, A; Omodei, N; Orlando, E; Ormes, Jf; Ozaki, M; Paneque, D; Panetta, Jh; Parent, D; Pelassa, V; Pepe, M; Pesce Rollins, M; Petrosian, V; Pinchera, M; Piron, F; Porter, Ta; Profumo, S; Raino, S; Rando, R; Rapposelli, E; Razzano, Massimiliano; Reimer, A; Reimer, O; Reposeur, T; Ripken, J; Ritz, S; Rochester, Ls; Romani, Rw; Roth, M; Sadrozinski, Hfw; Saggini, N; Sanchez, D; Sander, A; Sgro, C; Siskind, Ej; Smith, Pd; Spandre, G; Spinelli, P; Stawarz, L; Stephens, Te; Strickman, Ms; Strong, Aw; Suson, Dj; Tajima, H; Takahashi, H; Takahashi, T; Tanaka, T; Thayer, Jb; Thayer, Jg; Thompson, Dj; Tibaldo, L; Tibolla, O; Torres, Df; Tosti, G; Tramacere, A; Turri, M; Uchiyama, Y; Usher, Tl; Vandenbroucke, J; Vasileiou, V; Vilchez, N; Vitale, V; Waite, Ap; Wallace, E; Wang, P; Winer, Bl; Wood, Ks; Yang, Z; Ylinen, T; Ziegler, M.

doi:10.1103/PhysRevD.82.092004

We present the results of our analysis of cosmic-ray electrons using about 8×106 electron candidates detected in the first 12 months on-orbit by the Fermi Large Area Telescope. This work extends our previously published cosmic-ray electron spectrum down to 7 GeV, giving a spectral range of approximately 2.5 decades up to 1 TeV. We describe in detail the analysis and its validation using beam-test and on-orbit data. In addition, we describe the spectrum measured via a subset of events selected for the best energy resolution as a cross-check on the measurement using the full event sample. Our electron spectrum can be described with a power law ∝E-3.08±0.05 with no prominent spectral features within systematic uncertainties. Within the limits of our uncertainties, we can accommodate a slight spectral hardening at around 100 GeV and a slight softening above 500 GeV.

Autori interni:	Ackermann M Ajello M Atwood WB BALDINI, LUCA Ballet J Barbiellini G Bastieri D Baughman BM Bechtol K Bellardi F Bellazzini R Belli F Berenji B Blandford RD Bloom ED Bogart JR Bonamente E Borgland AW Brandt TJ Bregeon J Brez A Brigida M Bruel P Buehler R Burnett TH Busetto G Buson S Caliandro GA Cameron RA Caraveo PA Carlson P Carrigan S Casandjian JM Ceccanti M Cecchi C Celik O Charles E Chekhtman A Cheung CC Chiang J Cillis AN Ciprini S Claus R Cohen Tanugi J Conrad J Corbet R DeKlotz M Dermer CD de Angelis A de Palma F Digel SW Di Bernardo G Silva EDE Drell PS Drlica Wagner A Dubois R Fabiani D Favuzzi C Fegan SJ Fortin P Fukazawa Y Funk S Fusco P Gaggero D Gargano F Gasparrini D Gehrels N Germani S Giglietto N Giommi P Giordano F Giroletti M Glanzman T Godfrey G Grasso D Grenier IA Grondin MH Grove JE Guiriec S Gustafsson M Hadasch D Harding AK Hayashida M Hays E Horan D Hughes RE Johannesson G Johnson AS Johnson RP Johnson WN Kamae T Katagiri H Kataoka J Kerr M Knodlseder J Kuss M Lande J Latronico L Lemoine Goumard M Garde ML Longo F Loparco F Lott B Lovellette MN Lubrano P Makeev A Mazziotta MN McEnery JE Mehault J Michelson PF Minuti M Mitthumsiri W Mizuno T Moiseev AA Monte C Monzani ME Moretti E Morselli A Moskalenko IV Murgia S Nakamori T Naumann Godo M Nolan PL Norris JP Nuss E Ohsugi T Okumura A Omodei N Orlando E Ormes JF Ozaki M Paneque D Panetta JH Parent D Pelassa V Pepe M Pesce Rollins M Petrosian V Pinchera M Piron F Porter TA Profumo S Raino S Rando R Rapposelli E RAZZANO, MASSIMILIANO Reimer A Reimer O Reposeur T Ripken J Ritz S Rochester LS Romani RW Roth M Sadrozinski HFW Saggini N Sanchez D Sander A Sgro C Siskind EJ Smith PD Spandre G Spinelli P Stawarz L Stephens TE Strickman MS Strong AW Suson DJ Tajima H Takahashi H Takahashi T Tanaka T Thayer JB Thayer JG Thompson DJ Tibaldo L Tibolla O Torres DF Tosti G Tramacere A Turri M Uchiyama Y Usher TL Vandenbroucke J Vasileiou V Vilchez N Vitale V Waite AP Wallace E Wang P Winer BL Wood KS Yang Z Ylinen T Ziegler M. mostra contributor esterni nascondi contributor esterni
Autori:	Ackermann M; Ajello M; Atwood WB; Baldini L; Ballet J; Barbiellini G; Bastieri D; Baughman BM; Bechtol K; Bellardi F; Bellazzini R; Belli F; Berenji B; Blandford RD; Bloom ED; Bogart JR; Bonamente E; Borgland AW; Brandt TJ; Bregeon J; Brez A; Brigida M; Bruel P; Buehler R; Burnett TH; Busetto G; Buson S; Caliandro GA; Cameron RA; Caraveo PA; Carlson P; Carrigan S; Casandjian JM; Ceccanti M; Cecchi C; Celik O; Charles E; Chekhtman A; Cheung CC; Chiang J; Cillis AN; Ciprini S; Claus R; Cohen-Tanugi J; Conrad J; Corbet R; DeKlotz M; Dermer CD; de Angelis A; de Palma F; Digel SW; Di Bernardo G; Silva EDE; Drell PS; Drlica-Wagner A; Dubois R; Fabiani D; Favuzzi C; Fegan SJ; Fortin P; Fukazawa Y; Funk S; Fusco P; Gaggero D; Gargano F; Gasparrini D; Gehrels N; Germani S; Giglietto N; Giommi P; Giordano F; Giroletti M; Glanzman T; Godfrey G; Grasso D; Grenier IA; Grondin MH; Grove JE; Guiriec S; Gustafsson M; Hadasch D; Harding AK; Hayashida M; Hays E; Horan D; Hughes RE; Johannesson G; Johnson AS; Johnson RP; Johnson WN; Kamae T; Katagiri H; Kataoka J; Kerr M; Knodlseder J; Kuss M; Lande J; Latronico L; Lemoine-Goumard M; Garde ML; Longo F; Loparco F; Lott B; Lovellette MN; Lubrano P; Makeev A; Mazziotta MN; McEnery JE; Mehault J; Michelson PF; Minuti M; Mitthumsiri W; Mizuno T; Moiseev AA; Monte C; Monzani ME; Moretti E; Morselli A; Moskalenko IV; Murgia S; Nakamori T; Naumann-Godo M; Nolan PL; Norris JP; Nuss E; Ohsugi T; Okumura A; Omodei N; Orlando E; Ormes JF; Ozaki M; Paneque D; Panetta JH; Parent D; Pelassa V; Pepe M; Pesce-Rollins M; Petrosian V; Pinchera M; Piron F; Porter TA; Profumo S; Raino S; Rando R; Rapposelli E; Razzano M; Reimer A; Reimer O; Reposeur T; Ripken J; Ritz S; Rochester LS; Romani RW; Roth M; Sadrozinski HFW; Saggini N; Sanchez D; Sander A; Sgro C; Siskind EJ; Smith PD; Spandre G; Spinelli P; Stawarz L; Stephens TE; Strickman MS; Strong AW; Suson DJ; Tajima H; Takahashi H; Takahashi T; Tanaka T; Thayer JB; Thayer JG; Thompson DJ; Tibaldo L; Tibolla O; Torres DF; Tosti G; Tramacere A; Turri M; Uchiyama Y; Usher TL; Vandenbroucke J; Vasileiou V; Vilchez N; Vitale V; Waite AP; Wallace E; Wang P; Winer BL; Wood KS; Yang Z; Ylinen T; Ziegler M
Titolo:	Fermi LAT observations of cosmic-ray electrons from 7 GeV to 1 TeV
Anno del prodotto:	2010
Digital Object Identifier (DOI):	10.1103/PhysRevD.82.092004
Appare nelle tipologie:	1.1 Articolo in rivista

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