Fermi LAT Observations of Cosmic-Ray Electrons From 7 GeV to 1 TeV

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

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Markus Ackermann
Ackermann et al., 2010

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American Physical Society, Physical Review D, 9(82)

DOI: 10.1103/physrevd.82.092004

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@article{Ackermann2010,
  abstract = {20 pages, 23 figures, 2 tables, published in Physical Review D 82, 092004 (2010) - contact authors: C. Sgro', A. Moiseev ; We present the results of our analysis of cosmic-ray electrons using about 8 million 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 $∝ {\rm E}^{-3.08 ± 0.05}$ 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.},
  author = {Ackermann, M.; Ajello M.; /Stanford U. HEPL /Taiwan Natl Taiwan U. /SLAC;Atwood W. B.; /UC Santa Cruz;Baldini L.; /INFN Pisa;Ballet J.; /DAPNIA Saclay; Barbiellini G.; /INFN Trieste /Trieste U.;Bastieri D.; /INFN Padua /Padua U.;Baughman B. M.; /Taiwan U. / and Ajello, M. and Wb, Atwood and Atwood, W. B. and M. Baughman, B. and Baldini, L. and Ballet, J. and D. Blandford, R. and Barbiellini, G. and D. Bloom, E. and Baughman, B. M. and Bm, Baughman and Bastieri, D. and R. Bogart, J. and W. Borgland, A. and Bechtol, K. and J. Brandt, T. and Bellardi, F. and Bellazzini, R. and Belli, F. and Rd, Blandford and Berenji, B. and Blandford, R. D. and H. Burnett, T. and Bloom, E. D. and Ed, Bloom and Bogart, J. R. and Bonamente, E. and Borgland, A. W. and M. Casandjian, J. and Jr, Bogart and Brandt, T. J. and Aw, Borgland and Bregeon, J. and Brez, A. and Brigida, M. and Tj, Brandt and N. Cillis, A. and Bruel, P. and Buehler, R. and Burnett, T. H. and Th, Burnett and Busetto, G. and Buson, S. and Caliandro, G. A. and Cameron, R. A. and D. Dermer, C. and Caraveo, P. A. and W. Digel, S. and Carlson, P. and Ga, Caliandro and Carrigan, S. and Casandjian, J. M. and Ra, Cameron and Ceccanti, M. and Çelik, Ö. and Pa, Caraveo and Cecchi, C. and Do Couto E. Silva, E. and S. Drell, P. and Charles, E. and Jm, Casandjian and Chekhtman, A. and Cheung, C. C. and De Angelis, A. and Chiang, J. and Celik, O. and Cillis, A. N. and Ciprini, S. and De Palma, F. and Claus, R. and Cohen-Tanugi, J. and J. Fegan, S. and Conrad, J. and Cc, Cheung and Corbet, R. and DeKlotz, M. and An, Cillis and Dermer, C. D. and Cd, Dermer and Digel, S. W. and Di Bernardo, G. and Angelis, A. D. and E. Grove, J. and Palma, F. D. and Sw, Digel and Drell, P. S. and Drlica-Wagner, A. and Dubois, R. and Bernardo, G. D. and Fabiani, D. and Ede, Silva and K. Harding, A. and Favuzzi, C. and Silva, E. D. E. and Fegan, S. J. and Fortin, P. and Ps, Drell and Fukazawa, Y. and Funk, S. and E. Hughes, R. and Sj, Fegan and Fusco, P. and Gaggero, D. and S. Johnson, A. and Gargano, F. and Gasparrini, D. and Gehrels, N. and Germani, S. and P. Johnson, R. and Giglietto, N. and Giommi, P. and N. Johnson, W. and Giordano, F. and Giroletti, M. and Glanzman, T. and Ia, Grenier and Godfrey, G. and Grasso, D. and Mh, Grondin and Grenier, I. A. and Grondin, M.-H. and Je, Grove and Grove, J. E. and Ak, Harding and Guiriec, S. and Gustafsson, M. and N. Lovellette, M. and Hadasch, D. and Re, Hughes and Harding, A. K. and Hayashida, M. and Johannesson, G. and Hays, E. and Horan, D. and As, Johnson and N. Mazziotta, M. and Rp, Johnson and Hughes, R. E. and Jóhannesson, G. and E. Mcenery, J. and Wn, Johnson and Johnson, A. S. and F. Michelson, P. and Johnson, R. P. and Johnson, W. N. and Kamae, T. and Katagiri, H. and Kataoka, J. and Kerr, M. and Knödlseder, J. and E. Monzani, M. and Kuss, M. and Ml, Garde and Lande, J. and Latronico, L. and Garde, M. L. and Lemoine-Goumard, M. and V. Moskalenko, I. and Llena Garde, M. and Longo, F. and Mn, Lovellette and Loparco, F. and Lott, B. and A. Caliandro, G. and L. Nolan, P. and Lovellette, M. N. and Lubrano, P. and Makeev, A. and Mn, Mazziotta and A. Cameron, R. and Je, McEnery and Mazziotta, M. N. and McEnery, J. E. and Mehault, J. and Pf, Michelson and A. Caraveo, P. and P. Norris, J. and Michelson, P. F. and Minuti, M. and C. Cheung, C. and Mitthumsiri, W. and Mizuno, T. and Aa, Moiseev and Moiseev, A. A. and Me, Monzani and Monte, C. and Monzani, M. E. and F. Ormes, J. and Moretti, E. and Iv, Moskalenko and Morselli, A. and Moskalenko, I. V. and H. Panetta, J. and Murgia, S. and Nakamori, T. and Pl, Nolan and Naumann-Godo, M. and Jp, Norris and Nolan, P. L. and Norris, J. P. and Nuss, E. and Ohsugi, T. and Okumura, A. and Omodei, N. and Jf, Ormes and Orlando, E. and Ormes, J. F. and Ozaki, M. and Jh, Panetta and Paneque, D. and A. Grenier, I. and Panetta, J. H. and Parent, D. and S. Rochester, L. and Pelassa, V. and Pepe, M. and W. Romani, R. and Pesce-Rollins, M. and Ta, Porter and Petrosian, V. and Pinchera, M. and F.-W. Sadrozinski, H. and Piron, F. and J. Siskind, E. and Porter, T. A. and Profumo, S. and D. Smith, P. and Rainò, S. and Rando, R. and Ls, Rochester and Rapposelli, E. and E. Stephens, T. and Razzano, M. and Reimer, A. and Rw, Romani and Reimer, O. and Reposeur, T. and Hfw, Sadrozinski and Ripken, J. and S. Strickman, M. and Ritz, S. and Rochester, L. S. and A. Moiseev, A. and Romani, R. W. and Roth, M. and W. Strong, A. and J. Suson, D. and Sadrozinski, H. F.-W. and Saggini, N. and Sanchez, D. and Stawarz, Ł. and Sander, A. and Ej, Siskind and Sgrò, C. and G. Thayer, J. and Pd, Smith and Siskind, E. J. and J. Thompson, D. and Smith, P. D. and Spandre, G. and Spinelli, P. and F. Torres, D. and Te, Stephens and Stawarz, L. and Ms, Strickman and Stephens, T. E. and B. Atwood, W. and Strickman, M. S. and Strong, A. W. and Aw, Strong and Suson, D. J. and Dj, Suson and Tajima, H. and Takahashi, H. and L. Usher, T. and Takahashi, T. and Tanaka, T. and P. Waite, A. and Thayer, J. B. and Jb, Thayer and Thayer, J. G. and Thompson, D. J. and Jg, Thayer and Tibaldo, L. and Dj, Thompson and Tibolla, O. and Torres, D. F. and L. Winer, B. and Tosti, G. and Tramacere, A. and Df, Torres and Turri, M. and S. Wood, K. and Uchiyama, Y. and Usher, T. L. and Tl, Usher and Vandenbroucke, J. and Vasileiou, V. and B. Thayer, J. and Vilchez, N. and Vitale, V. and Waite, A. P. and Ap, Waite and Wallace, E. and Wang, P. and Winer, B. L. and Bl, Winer and Wood, K. S. and Ks, Wood and Yang, Z. and Ylinen, T. and Ziegler, M. and Collaboration, Fermi Lat},
  doi = {10.1103/physrevd.82.092004},
  journal = {Physical Review D},
  month = {nov},
  title = {Fermi LAT Observations of Cosmic-Ray Electrons From 7 GeV to 1 TeV},
  url = {http://arxiv.org/pdf/1008.3999},
  volume = {82},
  year = {2010}
}

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Fermi LAT Observations of Cosmic-Ray Electrons From 7 GeV to 1 TeV

Journal article published in 2010 by M.; Ajello M.; /Stanford U. HEPL /Taiwan Natl Taiwan U. /SLAC;Atwood W. B.; /UC Santa Cruz;Baldini L.; /INFN Pisa;Ballet J.; /DAPNIA Saclay; Barbiellini G.; /INFN Trieste /Trieste U.;Bastieri D.; /INFN Padua /Padua U.;Baughman B. M.; /Taiwan U. / Ackermann

, M. Ajello

, Atwood Wb, W. B. Atwood, B. M. Baughman, L. Baldini

, J. Ballet, R. D. Blandford, G. Barbiellini, E. D. Bloom, B. M. Baughman, Baughman Bm, D. Bastieri

, J. R. Bogart, A. W. Borgland and other authors. M.; Ajello M.; /Stanford U. HEPL /Taiwan Natl Taiwan U. /SLAC;Atwood W. B.; /UC Santa Cruz;Baldini L.; /INFN Pisa;Ballet J.; /DAPNIA Saclay; Barbiellini G.; /INFN Trieste /Trieste U.;Bastieri D.; /INFN Padua /Padua U.;Baughman B. M.; /Taiwan U. / Ackermann

, M. Ajello

, Atwood Wb, W. B. Atwood, B. M. Baughman, L. Baldini

, J. Ballet, R. D. Blandford, G. Barbiellini, E. D. Bloom, B. M. Baughman, Baughman Bm, D. Bastieri

, J. R. Bogart, A. W. Borgland, K. Bechtol, T. J. Brandt, F. Bellardi, R. Bellazzini, F. Belli, Blandford Rd, B. Berenji, R. D. Blandford, T. H. Burnett, E. D. Bloom, Bloom Ed, J. R. Bogart, E. Bonamente, A. W. Borgland, J. M. Casandjian, Bogart Jr, T. J. Brandt, Borgland Aw, J. Bregeon, A. Brez, M. Brigida, Brandt Tj, A. N. Cillis, P. Bruel, R. Buehler, T. H. Burnett, Burnett Th, G. Busetto, S. Buson, G. A. Caliandro, R. A. Cameron, C. D. Dermer, P. A. Caraveo, S. W. Digel, P. Carlson, Caliandro Ga, S. Carrigan, J. M. Casandjian, Cameron Ra, M. Ceccanti, Ö. Çelik, Caraveo Pa, C. Cecchi, E. Do Couto E. Silva, P. S. Drell, E. Charles, Casandjian Jm, A. Chekhtman, C. C. Cheung, A. De Angelis, J. Chiang, O. Celik, A. N. Cillis, S. Ciprini

, F. De Palma, R. Claus, J. Cohen-Tanugi, S. J. Fegan, J. Conrad, Cheung Cc, R. Corbet, M. DeKlotz, Cillis An, C. D. Dermer, Dermer Cd, S. W. Digel, G. Di Bernardo, A. D. Angelis, J. E. Grove, F. D. Palma, Digel Sw, P. S. Drell, A. Drlica-Wagner, R. Dubois, G. D. Bernardo, D. Fabiani, Silva Ede, A. K. Harding, C. Favuzzi, E. D. E. Silva, S. J. Fegan, P. Fortin, Drell Ps, Y. Fukazawa, S. Funk

, R. E. Hughes, Fegan Sj, P. Fusco, D. Gaggero, A. S. Johnson, F. Gargano

, D. Gasparrini

, N. Gehrels, S. Germani, R. P. Johnson, N. Giglietto, P. Giommi, W. N. Johnson, F. Giordano, M. Giroletti, T. Glanzman, Grenier Ia, G. Godfrey, D. Grasso, Grondin Mh, I. A. Grenier, M.-H. Grondin, Grove Je, J. E. Grove, Harding Ak, S. Guiriec, M. Gustafsson, M. N. Lovellette, D. Hadasch, Hughes Re, A. K. Harding, M. Hayashida, G. Johannesson, E. Hays, D. Horan, Johnson As, M. N. Mazziotta, Johnson Rp, R. E. Hughes, G. Jóhannesson, J. E. Mcenery, Johnson Wn, A. S. Johnson, P. F. Michelson, R. P. Johnson, W. N. Johnson, T. Kamae, H. Katagiri, J. Kataoka, M. Kerr, J. Knödlseder, M. E. Monzani, M. Kuss, Garde Ml, J. Lande, L. Latronico, M. L. Garde, M. Lemoine-Goumard, I. V. Moskalenko, M. Llena Garde, F. Longo, Lovellette Mn, F. Loparco, B. Lott, G. A. Caliandro, P. L. Nolan, M. N. Lovellette, P. Lubrano, A. Makeev, Mazziotta Mn, R. A. Cameron, McEnery Je, M. N. Mazziotta

, J. E. McEnery, J. Mehault, Michelson Pf, P. A. Caraveo, J. P. Norris, P. F. Michelson, M. Minuti, C. C. Cheung, W. Mitthumsiri, T. Mizuno, Moiseev Aa, A. A. Moiseev, Monzani Me, C. Monte, M. E. Monzani, J. F. Ormes, E. Moretti

, Moskalenko Iv, A. Morselli, I. V. Moskalenko, J. H. Panetta, S. Murgia, T. Nakamori, Nolan Pl, M. Naumann-Godo, Norris Jp, P. L. Nolan, J. P. Norris, E. Nuss, T. Ohsugi, A. Okumura, N. Omodei

, Ormes Jf, E. Orlando, J. F. Ormes, M. Ozaki, Panetta Jh, D. Paneque, I. A. Grenier, J. H. Panetta, D. Parent, L. S. Rochester, V. Pelassa, M. Pepe, R. W. Romani, M. Pesce-Rollins, Porter Ta, V. Petrosian, M. Pinchera, H. F.-W. Sadrozinski, F. Piron, E. J. Siskind, T. A. Porter, S. Profumo, P. D. Smith, S. Rainò, R. Rando

, Rochester Ls, E. Rapposelli, T. E. Stephens, M. Razzano, A. Reimer, Romani Rw, O. Reimer, T. Reposeur, Sadrozinski Hfw, J. Ripken, M. S. Strickman, S. Ritz, L. S. Rochester, A. A. Moiseev, R. W. Romani, M. Roth, A. W. Strong, D. J. Suson, H. F.-W. Sadrozinski, N. Saggini, D. Sanchez, Ł. Stawarz, A. Sander, Siskind Ej, C. Sgrò, J. G. Thayer, Smith Pd, E. J. Siskind, D. J. Thompson, P. D. Smith, G. Spandre

, P. Spinelli, D. F. Torres, Stephens Te, L. Stawarz, Strickman Ms, T. E. Stephens, W. B. Atwood, M. S. Strickman, A. W. Strong, Strong Aw, D. J. Suson, Suson Dj, H. Tajima, H. Takahashi, T. L. Usher, T. Takahashi, T. Tanaka, A. P. Waite, J. B. Thayer, Thayer Jb, J. G. Thayer, D. J. Thompson, Thayer Jg, L. Tibaldo, Thompson Dj, O. Tibolla, D. F. Torres, B. L. Winer, G. Tosti, A. Tramacere, Torres Df, M. Turri, K. S. Wood, Y. Uchiyama, T. L. Usher, Usher Tl, J. Vandenbroucke, V. Vasileiou, J. B. Thayer, N. Vilchez, V. Vitale, A. P. Waite, Waite Ap, E. Wallace, P. Wang, B. L. Winer, Winer Bl, K. S. Wood, Wood Ks, Z. Yang, T. Ylinen, M. Ziegler, Fermi Lat Collaboration

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Abstract

20 pages, 23 figures, 2 tables, published in Physical Review D 82, 092004 (2010) - contact authors: C. Sgro', A. Moiseev ; We present the results of our analysis of cosmic-ray electrons using about 8 million 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 $∝ {\rm E}^{-3.08 ± 0.05}$ 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.

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Fermi LAT Observations of Cosmic-Ray Electrons From 7 GeV to 1 TeV

Abstract