Search for gamma-ray emission from magnetars with the Fermi large area telescope

A. A. Abdo, M. Ackermann, M. Ajello, A. Allafort, L. Baldini, J. Ballet, G. Barbiellini, M. G. Baring, D. Bastieri, R. Bellazzini, R. D. Blandford, E. D. Bloom, E. Bonamente, A. W. Borgland, A. Bouvier, J. Bregeon, M. Brigida, P. Bruel, T. H. Burnett, G. A. CaliandroR. A. Cameron, P. A. Caraveo, C. Cecchi, Ö Çelik, S. Chaty, A. Chekhtman, C. C. Cheung, J. Chiang, S. Ciprini, R. Claus, J. Conrad, P. R. Den Hartog, C. D. Dermer, A. De Angelis, F. De Palma, R. Dib, M. Dormody, E. Do Couto E Silva, P. S. Drell, R. Dubois, D. Dumora, T. Enoto, C. Favuzzi, M. Frailis, P. Fusco, F. Gargano, N. Gehrels, N. Giglietto, P. Giommi, F. Giordano, M. Giroletti, T. Glanzman, G. Godfrey, I. A. Grenier, M. H. Grondin, S. Guiriec, D. Hadasch, Y. Hanabata, A. K. Harding, E. Hays, G. L. Israel, G. Jóhannesson, A. S. Johnson, V. M. Kaspi, H. Katagiri, Jun Kataoka, J. Knödlseder, M. Kuss, J. Lande, S. H. Lee, M. Lemoine-Goumard, F. Longo, F. Loparco, M. N. Lovellette, P. Lubrano, A. Makeev, M. Marelli, M. N. Mazziotta, J. E. McEnery, J. Mehault, P. F. Michelson, T. Mizuno, A. A. Moiseev, C. Monte, M. E. Monzani, A. Morselli, I. V. Moskalenko, S. Murgia, M. Naumann-Godo, P. L. Nolan, E. Nuss, T. Ohsugi, A. Okumura, N. Omodei, E. Orlando, J. F. Ormes, M. Ozaki, D. Paneque, D. Parent, M. Pepe, M. Pesce-Rollins, F. Piron, T. A. Porter, S. Rainò, R. Rando, M. Razzano, N. Rea, A. Reimer, O. Reimer, T. Reposeur, S. Ritz, H. F W Sadrozinski, P. M. Saz Parkinson, C. Sgrò, E. J. Siskind, D. A. Smith, G. Spandre, P. Spinelli, M. S. Strickman, H. Takahashi, T. Tanaka, J. B. Thayer, D. J. Thompson, L. Tibaldo, D. F. Torres, G. Tosti, A. Tramacere, E. Troja, Y. Uchiyama, T. L. Usher, J. Vandenbroucke, V. Vasileiou, G. Vianello, V. Vitale, A. P. Waite, B. L. Winer, K. S. Wood, Z. Yang, M. Ziegler

    Research output: Contribution to journalArticle

    31 Citations (Scopus)

    Abstract

    We report on the search for 0.1-10GeV emission from magnetars in 17months of Fermi LargeAreaTelescope (LAT) observations. No significant evidence for gamma-ray emission from any of the currently known magnetars is found. The most stringent upper limits to date on their persistent emission in the Fermi energy range are estimated between ∼10-12 and 10-10 erg s-1 cm-2, depending on the source.We also searched for gamma-ray pulsations and possible outbursts, also with no significant detection. The upper limits derived support the presence of a cutoff at an energy below a few MeV in the persistent emission of magnetars. They also show the likely need for a revision of current models of outer-gap emission from stronglymagnetized pulsars, which, in some realizations, predict detectableGeV emission frommagnetars at flux levels exceeding the upper limits identified here using the Fermi-LAT observations.

    Original languageEnglish
    JournalAstrophysical Journal Letters
    Volume725
    Issue number1 PART 2
    DOIs
    Publication statusPublished - 2010 Dec 10

    Fingerprint

    magnetars
    gamma rays
    telescopes
    outburst
    pulsars
    erg
    energy
    cut-off

    Keywords

    • Gamma rays: stars
    • Magnetic fields
    • Pulsars: individual (4U 0142+614, 1E 1048.1-5937, 1E 1841-045, 1E 1547-5408, 1RXS J1708-4009, XTE J1810-197, CXOU J1647-4552, 1E 2259+586, SGR 1900+14, SGR 1806-20, SGR 1627-41, SGR 0501+4516, SGR 0418+5729)
    • Stars: magnetars

    ASJC Scopus subject areas

    • Space and Planetary Science
    • Astronomy and Astrophysics

    Cite this

    Abdo, A. A., Ackermann, M., Ajello, M., Allafort, A., Baldini, L., Ballet, J., ... Ziegler, M. (2010). Search for gamma-ray emission from magnetars with the Fermi large area telescope. Astrophysical Journal Letters, 725(1 PART 2). https://doi.org/10.1088/2041-8205/725/1/L73

    Search for gamma-ray emission from magnetars with the Fermi large area telescope. / Abdo, A. A.; Ackermann, M.; Ajello, M.; Allafort, A.; Baldini, L.; Ballet, J.; Barbiellini, G.; Baring, M. G.; Bastieri, D.; Bellazzini, R.; Blandford, R. D.; Bloom, E. D.; Bonamente, E.; Borgland, A. W.; Bouvier, A.; Bregeon, J.; Brigida, M.; Bruel, P.; Burnett, T. H.; Caliandro, G. A.; Cameron, R. A.; Caraveo, P. A.; Cecchi, C.; Çelik, Ö; Chaty, S.; Chekhtman, A.; Cheung, C. C.; Chiang, J.; Ciprini, S.; Claus, R.; Conrad, J.; Den Hartog, P. R.; Dermer, C. D.; De Angelis, A.; De Palma, F.; Dib, R.; Dormody, M.; Do Couto E Silva, E.; Drell, P. S.; Dubois, R.; Dumora, D.; Enoto, T.; Favuzzi, C.; Frailis, M.; Fusco, P.; Gargano, F.; Gehrels, N.; Giglietto, N.; Giommi, P.; Giordano, F.; Giroletti, M.; Glanzman, T.; Godfrey, G.; Grenier, I. A.; Grondin, M. H.; Guiriec, S.; Hadasch, D.; Hanabata, Y.; Harding, A. K.; Hays, E.; Israel, G. L.; Jóhannesson, G.; Johnson, A. S.; Kaspi, V. M.; Katagiri, H.; Kataoka, Jun; Knödlseder, J.; Kuss, M.; Lande, J.; Lee, S. H.; Lemoine-Goumard, M.; Longo, F.; Loparco, F.; Lovellette, M. N.; Lubrano, P.; Makeev, A.; Marelli, M.; Mazziotta, M. N.; McEnery, J. E.; Mehault, J.; Michelson, P. F.; Mizuno, T.; Moiseev, A. A.; Monte, C.; Monzani, M. E.; Morselli, A.; Moskalenko, I. V.; Murgia, S.; Naumann-Godo, M.; Nolan, P. L.; Nuss, E.; Ohsugi, T.; Okumura, A.; Omodei, N.; Orlando, E.; Ormes, J. F.; Ozaki, M.; Paneque, D.; Parent, D.; Pepe, M.; Pesce-Rollins, M.; Piron, F.; Porter, T. A.; Rainò, S.; Rando, R.; Razzano, M.; Rea, N.; Reimer, A.; Reimer, O.; Reposeur, T.; Ritz, S.; Sadrozinski, H. F W; Saz Parkinson, P. M.; Sgrò, C.; Siskind, E. J.; Smith, D. A.; Spandre, G.; Spinelli, P.; Strickman, M. S.; Takahashi, H.; Tanaka, T.; Thayer, J. B.; Thompson, D. J.; Tibaldo, L.; Torres, D. F.; Tosti, G.; Tramacere, A.; Troja, E.; Uchiyama, Y.; Usher, T. L.; Vandenbroucke, J.; Vasileiou, V.; Vianello, G.; Vitale, V.; Waite, A. P.; Winer, B. L.; Wood, K. S.; Yang, Z.; Ziegler, M.

    In: Astrophysical Journal Letters, Vol. 725, No. 1 PART 2, 10.12.2010.

    Research output: Contribution to journalArticle

    Abdo, AA, Ackermann, M, Ajello, M, Allafort, A, Baldini, L, Ballet, J, Barbiellini, G, Baring, MG, Bastieri, D, Bellazzini, R, Blandford, RD, Bloom, ED, Bonamente, E, Borgland, AW, Bouvier, A, Bregeon, J, Brigida, M, Bruel, P, Burnett, TH, Caliandro, GA, Cameron, RA, Caraveo, PA, Cecchi, C, Çelik, Ö, Chaty, S, Chekhtman, A, Cheung, CC, Chiang, J, Ciprini, S, Claus, R, Conrad, J, Den Hartog, PR, Dermer, CD, De Angelis, A, De Palma, F, Dib, R, Dormody, M, Do Couto E Silva, E, Drell, PS, Dubois, R, Dumora, D, Enoto, T, Favuzzi, C, Frailis, M, Fusco, P, Gargano, F, Gehrels, N, Giglietto, N, Giommi, P, Giordano, F, Giroletti, M, Glanzman, T, Godfrey, G, Grenier, IA, Grondin, MH, Guiriec, S, Hadasch, D, Hanabata, Y, Harding, AK, Hays, E, Israel, GL, Jóhannesson, G, Johnson, AS, Kaspi, VM, Katagiri, H, Kataoka, J, Knödlseder, J, Kuss, M, Lande, J, Lee, SH, Lemoine-Goumard, M, Longo, F, Loparco, F, Lovellette, MN, Lubrano, P, Makeev, A, Marelli, M, Mazziotta, MN, McEnery, JE, Mehault, J, Michelson, PF, Mizuno, T, Moiseev, AA, Monte, C, Monzani, ME, Morselli, A, Moskalenko, IV, Murgia, S, Naumann-Godo, M, Nolan, PL, Nuss, E, Ohsugi, T, Okumura, A, Omodei, N, Orlando, E, Ormes, JF, Ozaki, M, Paneque, D, Parent, D, Pepe, M, Pesce-Rollins, M, Piron, F, Porter, TA, Rainò, S, Rando, R, Razzano, M, Rea, N, Reimer, A, Reimer, O, Reposeur, T, Ritz, S, Sadrozinski, HFW, Saz Parkinson, PM, Sgrò, C, Siskind, EJ, Smith, DA, Spandre, G, Spinelli, P, Strickman, MS, Takahashi, H, Tanaka, T, Thayer, JB, Thompson, DJ, Tibaldo, L, Torres, DF, Tosti, G, Tramacere, A, Troja, E, Uchiyama, Y, Usher, TL, Vandenbroucke, J, Vasileiou, V, Vianello, G, Vitale, V, Waite, AP, Winer, BL, Wood, KS, Yang, Z & Ziegler, M 2010, 'Search for gamma-ray emission from magnetars with the Fermi large area telescope', Astrophysical Journal Letters, vol. 725, no. 1 PART 2. https://doi.org/10.1088/2041-8205/725/1/L73
    Abdo AA, Ackermann M, Ajello M, Allafort A, Baldini L, Ballet J et al. Search for gamma-ray emission from magnetars with the Fermi large area telescope. Astrophysical Journal Letters. 2010 Dec 10;725(1 PART 2). https://doi.org/10.1088/2041-8205/725/1/L73
    Abdo, A. A. ; Ackermann, M. ; Ajello, M. ; Allafort, A. ; Baldini, L. ; Ballet, J. ; Barbiellini, G. ; Baring, M. G. ; Bastieri, D. ; Bellazzini, R. ; Blandford, R. D. ; Bloom, E. D. ; Bonamente, E. ; Borgland, A. W. ; Bouvier, A. ; Bregeon, J. ; Brigida, M. ; Bruel, P. ; Burnett, T. H. ; Caliandro, G. A. ; Cameron, R. A. ; Caraveo, P. A. ; Cecchi, C. ; Çelik, Ö ; Chaty, S. ; Chekhtman, A. ; Cheung, C. C. ; Chiang, J. ; Ciprini, S. ; Claus, R. ; Conrad, J. ; Den Hartog, P. R. ; Dermer, C. D. ; De Angelis, A. ; De Palma, F. ; Dib, R. ; Dormody, M. ; Do Couto E Silva, E. ; Drell, P. S. ; Dubois, R. ; Dumora, D. ; Enoto, T. ; Favuzzi, C. ; Frailis, M. ; Fusco, P. ; Gargano, F. ; Gehrels, N. ; Giglietto, N. ; Giommi, P. ; Giordano, F. ; Giroletti, M. ; Glanzman, T. ; Godfrey, G. ; Grenier, I. A. ; Grondin, M. H. ; Guiriec, S. ; Hadasch, D. ; Hanabata, Y. ; Harding, A. K. ; Hays, E. ; Israel, G. L. ; Jóhannesson, G. ; Johnson, A. S. ; Kaspi, V. M. ; Katagiri, H. ; Kataoka, Jun ; Knödlseder, J. ; Kuss, M. ; Lande, J. ; Lee, S. H. ; Lemoine-Goumard, M. ; Longo, F. ; Loparco, F. ; Lovellette, M. N. ; Lubrano, P. ; Makeev, A. ; Marelli, M. ; Mazziotta, M. N. ; McEnery, J. E. ; Mehault, J. ; Michelson, P. F. ; Mizuno, T. ; Moiseev, A. A. ; Monte, C. ; Monzani, M. E. ; Morselli, A. ; Moskalenko, I. V. ; Murgia, S. ; Naumann-Godo, M. ; Nolan, P. L. ; Nuss, E. ; Ohsugi, T. ; Okumura, A. ; Omodei, N. ; Orlando, E. ; Ormes, J. F. ; Ozaki, M. ; Paneque, D. ; Parent, D. ; Pepe, M. ; Pesce-Rollins, M. ; Piron, F. ; Porter, T. A. ; Rainò, S. ; Rando, R. ; Razzano, M. ; Rea, N. ; Reimer, A. ; Reimer, O. ; Reposeur, T. ; Ritz, S. ; Sadrozinski, H. F W ; Saz Parkinson, P. M. ; Sgrò, C. ; Siskind, E. J. ; Smith, D. A. ; Spandre, G. ; Spinelli, P. ; Strickman, M. S. ; Takahashi, H. ; Tanaka, T. ; Thayer, J. B. ; Thompson, D. J. ; Tibaldo, L. ; Torres, D. F. ; Tosti, G. ; Tramacere, A. ; Troja, E. ; Uchiyama, Y. ; Usher, T. L. ; Vandenbroucke, J. ; Vasileiou, V. ; Vianello, G. ; Vitale, V. ; Waite, A. P. ; Winer, B. L. ; Wood, K. S. ; Yang, Z. ; Ziegler, M. / Search for gamma-ray emission from magnetars with the Fermi large area telescope. In: Astrophysical Journal Letters. 2010 ; Vol. 725, No. 1 PART 2.
    @article{51e17e1dba344a4dade1455bcae3dd3f,
    title = "Search for gamma-ray emission from magnetars with the Fermi large area telescope",
    abstract = "We report on the search for 0.1-10GeV emission from magnetars in 17months of Fermi LargeAreaTelescope (LAT) observations. No significant evidence for gamma-ray emission from any of the currently known magnetars is found. The most stringent upper limits to date on their persistent emission in the Fermi energy range are estimated between ∼10-12 and 10-10 erg s-1 cm-2, depending on the source.We also searched for gamma-ray pulsations and possible outbursts, also with no significant detection. The upper limits derived support the presence of a cutoff at an energy below a few MeV in the persistent emission of magnetars. They also show the likely need for a revision of current models of outer-gap emission from stronglymagnetized pulsars, which, in some realizations, predict detectableGeV emission frommagnetars at flux levels exceeding the upper limits identified here using the Fermi-LAT observations.",
    keywords = "Gamma rays: stars, Magnetic fields, Pulsars: individual (4U 0142+614, 1E 1048.1-5937, 1E 1841-045, 1E 1547-5408, 1RXS J1708-4009, XTE J1810-197, CXOU J1647-4552, 1E 2259+586, SGR 1900+14, SGR 1806-20, SGR 1627-41, SGR 0501+4516, SGR 0418+5729), Stars: magnetars",
    author = "Abdo, {A. A.} and M. Ackermann and M. Ajello and A. Allafort and L. Baldini and J. Ballet and G. Barbiellini and Baring, {M. G.} and D. Bastieri and R. Bellazzini and Blandford, {R. D.} and Bloom, {E. D.} and E. Bonamente and Borgland, {A. W.} and A. Bouvier and J. Bregeon and M. Brigida and P. Bruel and Burnett, {T. H.} and Caliandro, {G. A.} and Cameron, {R. A.} and Caraveo, {P. A.} and C. Cecchi and {\"O} {\cC}elik and S. Chaty and A. Chekhtman and Cheung, {C. C.} and J. Chiang and S. Ciprini and R. Claus and J. Conrad and {Den Hartog}, {P. R.} and Dermer, {C. D.} and {De Angelis}, A. and {De Palma}, F. and R. Dib and M. Dormody and {Do Couto E Silva}, E. and Drell, {P. S.} and R. Dubois and D. Dumora and T. Enoto and C. Favuzzi and M. Frailis and P. Fusco and F. Gargano and N. Gehrels and N. Giglietto and P. Giommi and F. Giordano and M. Giroletti and T. Glanzman and G. Godfrey and Grenier, {I. A.} and Grondin, {M. H.} and S. Guiriec and D. Hadasch and Y. Hanabata and Harding, {A. K.} and E. Hays and Israel, {G. L.} and G. J{\'o}hannesson and Johnson, {A. S.} and Kaspi, {V. M.} and H. Katagiri and Jun Kataoka and J. Kn{\"o}dlseder and M. Kuss and J. Lande and Lee, {S. H.} and M. Lemoine-Goumard and F. Longo and F. Loparco and Lovellette, {M. N.} and P. Lubrano and A. Makeev and M. Marelli and Mazziotta, {M. N.} and McEnery, {J. E.} and J. Mehault and Michelson, {P. F.} and T. Mizuno and Moiseev, {A. A.} and C. Monte and Monzani, {M. E.} and A. Morselli and Moskalenko, {I. V.} and S. Murgia and M. Naumann-Godo and Nolan, {P. L.} and E. Nuss and T. Ohsugi and A. Okumura and N. Omodei and E. Orlando and Ormes, {J. F.} and M. Ozaki and D. Paneque and D. Parent and M. Pepe and M. Pesce-Rollins and F. Piron and Porter, {T. A.} and S. Rain{\`o} and R. Rando and M. Razzano and N. Rea and A. Reimer and O. Reimer and T. Reposeur and S. Ritz and Sadrozinski, {H. F W} and {Saz Parkinson}, {P. M.} and C. Sgr{\`o} and Siskind, {E. J.} and Smith, {D. A.} and G. Spandre and P. Spinelli and Strickman, {M. S.} and H. Takahashi and T. Tanaka and Thayer, {J. B.} and Thompson, {D. J.} and L. Tibaldo and Torres, {D. F.} and G. Tosti and A. Tramacere and E. Troja and Y. Uchiyama and Usher, {T. L.} and J. Vandenbroucke and V. Vasileiou and G. Vianello and V. Vitale and Waite, {A. P.} and Winer, {B. L.} and Wood, {K. S.} and Z. Yang and M. Ziegler",
    year = "2010",
    month = "12",
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    doi = "10.1088/2041-8205/725/1/L73",
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    volume = "725",
    journal = "Astrophysical Journal Letters",
    issn = "2041-8205",
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    TY - JOUR

    T1 - Search for gamma-ray emission from magnetars with the Fermi large area telescope

    AU - Abdo, A. A.

    AU - Ackermann, M.

    AU - Ajello, M.

    AU - Allafort, A.

    AU - Baldini, L.

    AU - Ballet, J.

    AU - Barbiellini, G.

    AU - Baring, M. G.

    AU - Bastieri, D.

    AU - Bellazzini, R.

    AU - Blandford, R. D.

    AU - Bloom, E. D.

    AU - Bonamente, E.

    AU - Borgland, A. W.

    AU - Bouvier, A.

    AU - Bregeon, J.

    AU - Brigida, M.

    AU - Bruel, P.

    AU - Burnett, T. H.

    AU - Caliandro, G. A.

    AU - Cameron, R. A.

    AU - Caraveo, P. A.

    AU - Cecchi, C.

    AU - Çelik, Ö

    AU - Chaty, S.

    AU - Chekhtman, A.

    AU - Cheung, C. C.

    AU - Chiang, J.

    AU - Ciprini, S.

    AU - Claus, R.

    AU - Conrad, J.

    AU - Den Hartog, P. R.

    AU - Dermer, C. D.

    AU - De Angelis, A.

    AU - De Palma, F.

    AU - Dib, R.

    AU - Dormody, M.

    AU - Do Couto E Silva, E.

    AU - Drell, P. S.

    AU - Dubois, R.

    AU - Dumora, D.

    AU - Enoto, T.

    AU - Favuzzi, C.

    AU - Frailis, M.

    AU - Fusco, P.

    AU - Gargano, F.

    AU - Gehrels, N.

    AU - Giglietto, N.

    AU - Giommi, P.

    AU - Giordano, F.

    AU - Giroletti, M.

    AU - Glanzman, T.

    AU - Godfrey, G.

    AU - Grenier, I. A.

    AU - Grondin, M. H.

    AU - Guiriec, S.

    AU - Hadasch, D.

    AU - Hanabata, Y.

    AU - Harding, A. K.

    AU - Hays, E.

    AU - Israel, G. L.

    AU - Jóhannesson, G.

    AU - Johnson, A. S.

    AU - Kaspi, V. M.

    AU - Katagiri, H.

    AU - Kataoka, Jun

    AU - Knödlseder, J.

    AU - Kuss, M.

    AU - Lande, J.

    AU - Lee, S. H.

    AU - Lemoine-Goumard, M.

    AU - Longo, F.

    AU - Loparco, F.

    AU - Lovellette, M. N.

    AU - Lubrano, P.

    AU - Makeev, A.

    AU - Marelli, M.

    AU - Mazziotta, M. N.

    AU - McEnery, J. E.

    AU - Mehault, J.

    AU - Michelson, P. F.

    AU - Mizuno, T.

    AU - Moiseev, A. A.

    AU - Monte, C.

    AU - Monzani, M. E.

    AU - Morselli, A.

    AU - Moskalenko, I. V.

    AU - Murgia, S.

    AU - Naumann-Godo, M.

    AU - Nolan, P. L.

    AU - Nuss, E.

    AU - Ohsugi, T.

    AU - Okumura, A.

    AU - Omodei, N.

    AU - Orlando, E.

    AU - Ormes, J. F.

    AU - Ozaki, M.

    AU - Paneque, D.

    AU - Parent, D.

    AU - Pepe, M.

    AU - Pesce-Rollins, M.

    AU - Piron, F.

    AU - Porter, T. A.

    AU - Rainò, S.

    AU - Rando, R.

    AU - Razzano, M.

    AU - Rea, N.

    AU - Reimer, A.

    AU - Reimer, O.

    AU - Reposeur, T.

    AU - Ritz, S.

    AU - Sadrozinski, H. F W

    AU - Saz Parkinson, P. M.

    AU - Sgrò, C.

    AU - Siskind, E. J.

    AU - Smith, D. A.

    AU - Spandre, G.

    AU - Spinelli, P.

    AU - Strickman, M. S.

    AU - Takahashi, H.

    AU - Tanaka, T.

    AU - Thayer, J. B.

    AU - Thompson, D. J.

    AU - Tibaldo, L.

    AU - Torres, D. F.

    AU - Tosti, G.

    AU - Tramacere, A.

    AU - Troja, E.

    AU - Uchiyama, Y.

    AU - Usher, T. L.

    AU - Vandenbroucke, J.

    AU - Vasileiou, V.

    AU - Vianello, G.

    AU - Vitale, V.

    AU - Waite, A. P.

    AU - Winer, B. L.

    AU - Wood, K. S.

    AU - Yang, Z.

    AU - Ziegler, M.

    PY - 2010/12/10

    Y1 - 2010/12/10

    N2 - We report on the search for 0.1-10GeV emission from magnetars in 17months of Fermi LargeAreaTelescope (LAT) observations. No significant evidence for gamma-ray emission from any of the currently known magnetars is found. The most stringent upper limits to date on their persistent emission in the Fermi energy range are estimated between ∼10-12 and 10-10 erg s-1 cm-2, depending on the source.We also searched for gamma-ray pulsations and possible outbursts, also with no significant detection. The upper limits derived support the presence of a cutoff at an energy below a few MeV in the persistent emission of magnetars. They also show the likely need for a revision of current models of outer-gap emission from stronglymagnetized pulsars, which, in some realizations, predict detectableGeV emission frommagnetars at flux levels exceeding the upper limits identified here using the Fermi-LAT observations.

    AB - We report on the search for 0.1-10GeV emission from magnetars in 17months of Fermi LargeAreaTelescope (LAT) observations. No significant evidence for gamma-ray emission from any of the currently known magnetars is found. The most stringent upper limits to date on their persistent emission in the Fermi energy range are estimated between ∼10-12 and 10-10 erg s-1 cm-2, depending on the source.We also searched for gamma-ray pulsations and possible outbursts, also with no significant detection. The upper limits derived support the presence of a cutoff at an energy below a few MeV in the persistent emission of magnetars. They also show the likely need for a revision of current models of outer-gap emission from stronglymagnetized pulsars, which, in some realizations, predict detectableGeV emission frommagnetars at flux levels exceeding the upper limits identified here using the Fermi-LAT observations.

    KW - Gamma rays: stars

    KW - Magnetic fields

    KW - Pulsars: individual (4U 0142+614, 1E 1048.1-5937, 1E 1841-045, 1E 1547-5408, 1RXS J1708-4009, XTE J1810-197, CXOU J1647-4552, 1E 2259+586, SGR 1900+14, SGR 1806-20, SGR 1627-41, SGR 0501+4516, SGR 0418+5729)

    KW - Stars: magnetars

    UR - http://www.scopus.com/inward/record.url?scp=78650245465&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=78650245465&partnerID=8YFLogxK

    U2 - 10.1088/2041-8205/725/1/L73

    DO - 10.1088/2041-8205/725/1/L73

    M3 - Article

    AN - SCOPUS:78650245465

    VL - 725

    JO - Astrophysical Journal Letters

    JF - Astrophysical Journal Letters

    SN - 2041-8205

    IS - 1 PART 2

    ER -