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

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 approxima...

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Main Authors:	Ackermann, M., Ajello, M., Atwood, W., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Baughman, B., Bechtol, K., Bellardi, F., Bellazzini, R., Belli, F., Berenji, B., Blandford, R., Bloom, E., Bogart, J., Bonamente, E., Borgland, A., Brandt, T., Bregeon, J., Brez, A., Brigida, M., Bruel, P., Buehler, R., Burnett, T., Busetto, G., Buson, S., Caliandro, G., Cameron, R., Caraveo, P., Carlson, P., Carrigan, S., Casandjian, J., Ceccanti, M., Cecchi, C., Celik, O., Charles, E., Chekhtman, A., Cheung, C., Chiang, J., Cillis, A., Ciprini, S., Claus, R., Cohen-Tanugi, J., Conrad, J., Corbet, R., DeKlotz, M., Dermer, C., de Angelis, A., de Palma, F., Digel, S., Di Bernardo, G., Do Couto e Silva, E., Drell, P., Drlica-Wagner, A., Dubois, R., Fabiani, D., Favuzzi, C., Fegan, S., 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, I., Grondin, M., Grove, J., Guiriec, S., Gustafsson, M., Hadasch, D., Harding, A., Hayashida, M., Hays, E., Horan, D., Hughes, R., Johannesson, G., Johnson, A., Johnson, R., Johnson, W., Kamae, T., Katagiri, H., Kataoka, J., Kerr, M., Knödlseder, J., Kuss, M., Lande, J., Latronico, L., Lemoine-Goumard, M., Llena Garde, M., Longo, F., Loparco, F., Lott, B., Lovellette, M., Lubrano, P., Makeev, A., Mazziotta, M., McEnery, J., Mehault, J., Michelson, P., Minuti, M., Mitthumsiri, W., Mizuno, T., Moiseev, A., Monte, C., Monzani, M., Moretti, E., Morselli, A., Moskalenko, I., Murgia, S., Nakamori, T., Naumann-Godo, M., Nolan, P., Norris, J., Nuss, E., Ohsugi, T., Okumura, A., Omodei, N., Orlando, E., Ormes, J., Ozaki, M., Paneque, D., Panetta, J., Parent, D., Pelassa, V., Pepe, M., Pesce-Rollins, M., Petrosian, V., Pinchera, M., Piron, F., Porter, T., Profumo, S., Raino, S., Rando, R., Rapposelli, E., Razzano, M., Reimer, A., Reimer, O., Reposeur, T., Ripken, J., Ritz, S., Rochester, L., Romani, R., Roth, M., Sadrozinski, H., Saggini, N., Sanchez, D., Sander, A., Sgro, C., Siskind, E., Smith, P., Spandre, G., Spinelli, P., Stawarz, L., Stephens, T., Strickman, M., Strong, A., Suson, D., Tajima, H., Takahashi, H., Takahashi, T., Tanaka, T., Thayer, J., Thompson, D., Tibaldo, L., Tibolla, Omar, Torres, D., Tosti, G., Tramacere, A., Turri, M., Uchiyama, Y., Usher, T., Vandenbroucke, J., Vasileiou, V., Vilchez, N., Vitale, V., Waite, A., Wallace, E., Wang, P., Winer, B., Wood, K., Yang, Z., Ylinen, T., Ziegler, M.
Format:	Journal Article
Published:	American Physical Society 2010
Online Access:	http://adsabs.harvard.edu/abs/2010PhRvD..82i2004A http://hdl.handle.net/20.500.11937/43511

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author	Ackermann, M. Ajello, M. Atwood, W. Baldini, L. Ballet, J. Barbiellini, G. Bastieri, D. Baughman, B. Bechtol, K. Bellardi, F. Bellazzini, R. Belli, F. Berenji, B. Blandford, R. Bloom, E. Bogart, J. Bonamente, E. Borgland, A. Brandt, T. Bregeon, J. Brez, A. Brigida, M. Bruel, P. Buehler, R. Burnett, T. Busetto, G. Buson, S. Caliandro, G. Cameron, R. Caraveo, P. Carlson, P. Carrigan, S. Casandjian, J. Ceccanti, M. Cecchi, C. Celik, O. Charles, E. Chekhtman, A. Cheung, C. Chiang, J. Cillis, A. Ciprini, S. Claus, R. Cohen-Tanugi, J. Conrad, J. Corbet, R. DeKlotz, M. Dermer, C. de Angelis, A. de Palma, F. Digel, S. Di Bernardo, G. Do Couto e Silva, E. Drell, P. Drlica-Wagner, A. Dubois, R. Fabiani, D. Favuzzi, C. Fegan, S. 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, I. Grondin, M. Grove, J. Guiriec, S. Gustafsson, M. Hadasch, D. Harding, A. Hayashida, M. Hays, E. Horan, D. Hughes, R. Johannesson, G. Johnson, A. Johnson, R. Johnson, W. Kamae, T. Katagiri, H. Kataoka, J. Kerr, M. Knödlseder, J. Kuss, M. Lande, J. Latronico, L. Lemoine-Goumard, M. Llena Garde, M. Longo, F. Loparco, F. Lott, B. Lovellette, M. Lubrano, P. Makeev, A. Mazziotta, M. McEnery, J. Mehault, J. Michelson, P. Minuti, M. Mitthumsiri, W. Mizuno, T. Moiseev, A. Monte, C. Monzani, M. Moretti, E. Morselli, A. Moskalenko, I. Murgia, S. Nakamori, T. Naumann-Godo, M. Nolan, P. Norris, J. Nuss, E. Ohsugi, T. Okumura, A. Omodei, N. Orlando, E. Ormes, J. Ozaki, M. Paneque, D. Panetta, J. Parent, D. Pelassa, V. Pepe, M. Pesce-Rollins, M. Petrosian, V. Pinchera, M. Piron, F. Porter, T. Profumo, S. Raino, S. Rando, R. Rapposelli, E. Razzano, M. Reimer, A. Reimer, O. Reposeur, T. Ripken, J. Ritz, S. Rochester, L. Romani, R. Roth, M. Sadrozinski, H. Saggini, N. Sanchez, D. Sander, A. Sgro, C. Siskind, E. Smith, P. Spandre, G. Spinelli, P. Stawarz, L. Stephens, T. Strickman, M. Strong, A. Suson, D. Tajima, H. Takahashi, H. Takahashi, T. Tanaka, T. Thayer, J. Thayer, J. Thompson, D. Tibaldo, L. Tibolla, Omar Torres, D. Tosti, G. Tramacere, A. Turri, M. Uchiyama, Y. Usher, T. Vandenbroucke, J. Vasileiou, V. Vilchez, N. Vitale, V. Waite, A. Wallace, E. Wang, P. Winer, B. Wood, K. Yang, Z. Ylinen, T. Ziegler, M.
author_facet	Ackermann, M. Ajello, M. Atwood, W. Baldini, L. Ballet, J. Barbiellini, G. Bastieri, D. Baughman, B. Bechtol, K. Bellardi, F. Bellazzini, R. Belli, F. Berenji, B. Blandford, R. Bloom, E. Bogart, J. Bonamente, E. Borgland, A. Brandt, T. Bregeon, J. Brez, A. Brigida, M. Bruel, P. Buehler, R. Burnett, T. Busetto, G. Buson, S. Caliandro, G. Cameron, R. Caraveo, P. Carlson, P. Carrigan, S. Casandjian, J. Ceccanti, M. Cecchi, C. Celik, O. Charles, E. Chekhtman, A. Cheung, C. Chiang, J. Cillis, A. Ciprini, S. Claus, R. Cohen-Tanugi, J. Conrad, J. Corbet, R. DeKlotz, M. Dermer, C. de Angelis, A. de Palma, F. Digel, S. Di Bernardo, G. Do Couto e Silva, E. Drell, P. Drlica-Wagner, A. Dubois, R. Fabiani, D. Favuzzi, C. Fegan, S. 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, I. Grondin, M. Grove, J. Guiriec, S. Gustafsson, M. Hadasch, D. Harding, A. Hayashida, M. Hays, E. Horan, D. Hughes, R. Johannesson, G. Johnson, A. Johnson, R. Johnson, W. Kamae, T. Katagiri, H. Kataoka, J. Kerr, M. Knödlseder, J. Kuss, M. Lande, J. Latronico, L. Lemoine-Goumard, M. Llena Garde, M. Longo, F. Loparco, F. Lott, B. Lovellette, M. Lubrano, P. Makeev, A. Mazziotta, M. McEnery, J. Mehault, J. Michelson, P. Minuti, M. Mitthumsiri, W. Mizuno, T. Moiseev, A. Monte, C. Monzani, M. Moretti, E. Morselli, A. Moskalenko, I. Murgia, S. Nakamori, T. Naumann-Godo, M. Nolan, P. Norris, J. Nuss, E. Ohsugi, T. Okumura, A. Omodei, N. Orlando, E. Ormes, J. Ozaki, M. Paneque, D. Panetta, J. Parent, D. Pelassa, V. Pepe, M. Pesce-Rollins, M. Petrosian, V. Pinchera, M. Piron, F. Porter, T. Profumo, S. Raino, S. Rando, R. Rapposelli, E. Razzano, M. Reimer, A. Reimer, O. Reposeur, T. Ripken, J. Ritz, S. Rochester, L. Romani, R. Roth, M. Sadrozinski, H. Saggini, N. Sanchez, D. Sander, A. Sgro, C. Siskind, E. Smith, P. Spandre, G. Spinelli, P. Stawarz, L. Stephens, T. Strickman, M. Strong, A. Suson, D. Tajima, H. Takahashi, H. Takahashi, T. Tanaka, T. Thayer, J. Thayer, J. Thompson, D. Tibaldo, L. Tibolla, Omar Torres, D. Tosti, G. Tramacere, A. Turri, M. Uchiyama, Y. Usher, T. Vandenbroucke, J. Vasileiou, V. Vilchez, N. Vitale, V. Waite, A. Wallace, E. Wang, P. Winer, B. Wood, K. Yang, Z. Ylinen, T. Ziegler, M.
author_sort	Ackermann, M.
building	Curtin Institutional Repository
collection	Online Access
description	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.
first_indexed	2025-11-14T09:16:37Z
format	Journal Article
id	curtin-20.500.11937-43511
institution	Curtin University Malaysia
institution_category	Local University
last_indexed	2025-11-14T09:16:37Z
publishDate	2010
publisher	American Physical Society
recordtype	eprints
repository_type	Digital Repository
spelling	curtin-20.500.11937-435112017-02-28T01:44:34Z Fermi LAT observations of cosmic-ray electrons from 7 GeV to 1 TeV Ackermann, M. Ajello, M. Atwood, W. Baldini, L. Ballet, J. Barbiellini, G. Bastieri, D. Baughman, B. Bechtol, K. Bellardi, F. Bellazzini, R. Belli, F. Berenji, B. Blandford, R. Bloom, E. Bogart, J. Bonamente, E. Borgland, A. Brandt, T. Bregeon, J. Brez, A. Brigida, M. Bruel, P. Buehler, R. Burnett, T. Busetto, G. Buson, S. Caliandro, G. Cameron, R. Caraveo, P. Carlson, P. Carrigan, S. Casandjian, J. Ceccanti, M. Cecchi, C. Celik, O. Charles, E. Chekhtman, A. Cheung, C. Chiang, J. Cillis, A. Ciprini, S. Claus, R. Cohen-Tanugi, J. Conrad, J. Corbet, R. DeKlotz, M. Dermer, C. de Angelis, A. de Palma, F. Digel, S. Di Bernardo, G. Do Couto e Silva, E. Drell, P. Drlica-Wagner, A. Dubois, R. Fabiani, D. Favuzzi, C. Fegan, S. 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, I. Grondin, M. Grove, J. Guiriec, S. Gustafsson, M. Hadasch, D. Harding, A. Hayashida, M. Hays, E. Horan, D. Hughes, R. Johannesson, G. Johnson, A. Johnson, R. Johnson, W. Kamae, T. Katagiri, H. Kataoka, J. Kerr, M. Knödlseder, J. Kuss, M. Lande, J. Latronico, L. Lemoine-Goumard, M. Llena Garde, M. Longo, F. Loparco, F. Lott, B. Lovellette, M. Lubrano, P. Makeev, A. Mazziotta, M. McEnery, J. Mehault, J. Michelson, P. Minuti, M. Mitthumsiri, W. Mizuno, T. Moiseev, A. Monte, C. Monzani, M. Moretti, E. Morselli, A. Moskalenko, I. Murgia, S. Nakamori, T. Naumann-Godo, M. Nolan, P. Norris, J. Nuss, E. Ohsugi, T. Okumura, A. Omodei, N. Orlando, E. Ormes, J. Ozaki, M. Paneque, D. Panetta, J. Parent, D. Pelassa, V. Pepe, M. Pesce-Rollins, M. Petrosian, V. Pinchera, M. Piron, F. Porter, T. Profumo, S. Raino, S. Rando, R. Rapposelli, E. Razzano, M. Reimer, A. Reimer, O. Reposeur, T. Ripken, J. Ritz, S. Rochester, L. Romani, R. Roth, M. Sadrozinski, H. Saggini, N. Sanchez, D. Sander, A. Sgro, C. Siskind, E. Smith, P. Spandre, G. Spinelli, P. Stawarz, L. Stephens, T. Strickman, M. Strong, A. Suson, D. Tajima, H. Takahashi, H. Takahashi, T. Tanaka, T. Thayer, J. Thayer, J. Thompson, D. Tibaldo, L. Tibolla, Omar Torres, D. Tosti, G. Tramacere, A. Turri, M. Uchiyama, Y. Usher, T. Vandenbroucke, J. Vasileiou, V. Vilchez, N. Vitale, V. Waite, A. Wallace, E. Wang, P. Winer, B. Wood, K. Yang, Z. Ylinen, T. Ziegler, M. 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. 2010 Journal Article http://hdl.handle.net/20.500.11937/43511 http://adsabs.harvard.edu/abs/2010PhRvD..82i2004A American Physical Society restricted
spellingShingle	Ackermann, M. Ajello, M. Atwood, W. Baldini, L. Ballet, J. Barbiellini, G. Bastieri, D. Baughman, B. Bechtol, K. Bellardi, F. Bellazzini, R. Belli, F. Berenji, B. Blandford, R. Bloom, E. Bogart, J. Bonamente, E. Borgland, A. Brandt, T. Bregeon, J. Brez, A. Brigida, M. Bruel, P. Buehler, R. Burnett, T. Busetto, G. Buson, S. Caliandro, G. Cameron, R. Caraveo, P. Carlson, P. Carrigan, S. Casandjian, J. Ceccanti, M. Cecchi, C. Celik, O. Charles, E. Chekhtman, A. Cheung, C. Chiang, J. Cillis, A. Ciprini, S. Claus, R. Cohen-Tanugi, J. Conrad, J. Corbet, R. DeKlotz, M. Dermer, C. de Angelis, A. de Palma, F. Digel, S. Di Bernardo, G. Do Couto e Silva, E. Drell, P. Drlica-Wagner, A. Dubois, R. Fabiani, D. Favuzzi, C. Fegan, S. 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, I. Grondin, M. Grove, J. Guiriec, S. Gustafsson, M. Hadasch, D. Harding, A. Hayashida, M. Hays, E. Horan, D. Hughes, R. Johannesson, G. Johnson, A. Johnson, R. Johnson, W. Kamae, T. Katagiri, H. Kataoka, J. Kerr, M. Knödlseder, J. Kuss, M. Lande, J. Latronico, L. Lemoine-Goumard, M. Llena Garde, M. Longo, F. Loparco, F. Lott, B. Lovellette, M. Lubrano, P. Makeev, A. Mazziotta, M. McEnery, J. Mehault, J. Michelson, P. Minuti, M. Mitthumsiri, W. Mizuno, T. Moiseev, A. Monte, C. Monzani, M. Moretti, E. Morselli, A. Moskalenko, I. Murgia, S. Nakamori, T. Naumann-Godo, M. Nolan, P. Norris, J. Nuss, E. Ohsugi, T. Okumura, A. Omodei, N. Orlando, E. Ormes, J. Ozaki, M. Paneque, D. Panetta, J. Parent, D. Pelassa, V. Pepe, M. Pesce-Rollins, M. Petrosian, V. Pinchera, M. Piron, F. Porter, T. Profumo, S. Raino, S. Rando, R. Rapposelli, E. Razzano, M. Reimer, A. Reimer, O. Reposeur, T. Ripken, J. Ritz, S. Rochester, L. Romani, R. Roth, M. Sadrozinski, H. Saggini, N. Sanchez, D. Sander, A. Sgro, C. Siskind, E. Smith, P. Spandre, G. Spinelli, P. Stawarz, L. Stephens, T. Strickman, M. Strong, A. Suson, D. Tajima, H. Takahashi, H. Takahashi, T. Tanaka, T. Thayer, J. Thayer, J. Thompson, D. Tibaldo, L. Tibolla, Omar Torres, D. Tosti, G. Tramacere, A. Turri, M. Uchiyama, Y. Usher, T. Vandenbroucke, J. Vasileiou, V. Vilchez, N. Vitale, V. Waite, A. Wallace, E. Wang, P. Winer, B. Wood, K. Yang, Z. Ylinen, T. Ziegler, M. Fermi LAT observations of cosmic-ray electrons from 7 GeV to 1 TeV
title	Fermi LAT observations of cosmic-ray electrons from 7 GeV to 1 TeV
title_full	Fermi LAT observations of cosmic-ray electrons from 7 GeV to 1 TeV
title_fullStr	Fermi LAT observations of cosmic-ray electrons from 7 GeV to 1 TeV
title_full_unstemmed	Fermi LAT observations of cosmic-ray electrons from 7 GeV to 1 TeV
title_short	Fermi LAT observations of cosmic-ray electrons from 7 GeV to 1 TeV
title_sort	fermi lat observations of cosmic-ray electrons from 7 gev to 1 tev
url	http://adsabs.harvard.edu/abs/2010PhRvD..82i2004A http://hdl.handle.net/20.500.11937/43511

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

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