Search for gamma-ray emission from des dwarf spheroidal galaxy candidates with Fermi-LAT data

A. Drlica-Wagner; A. Albert; K. Bechtol; M. Wood; L. Strigari; M. Sánchez-Conde; L. Baldini; R. Essig; J. Cohen-Tanugi; B. Anderson; R. Bellazzini; E. D. Bloom; R. Caputo; C. Cecchi; E. Charles; J. Chiang; A. De Angelis; S. Funk; P. Fusco; F. Gargano; N. Giglietto; F. Giordano; S. Guiriec; M. Gustafsson; M. Kuss; F. Loparco; P. Lubrano; N. Mirabal; T. Mizuno; A. Morselli; T. Ohsugi; E. Orlando; M. Persic; S. Rainò; N. Sehgal; F. Spada; D. J. Suson; G. Zaharijas; S. Zimmer; T. Abbott; S. Allam; E. Balbinot; A. H. Bauer; A. Benoit-Lévy; R. A. Bernstein; G. M. Bernstein; E. Bertin; D. Brooks; E. Buckley-Geer; D. L. Burke; A. Carnero Rosell; F. J. Castander; R. Covarrubias; C. B. D'Andrea; L. N.Da Costa; D. L. Depoy; S. Desai; H. T. Diehl; C. E. Cunha; T. F. Eifler; J. Estrada; A. E. Evrard; A. Fausti Neto; E. Fernandez; D. A. Finley; B. Flaugher; J. Frieman; E. Gaztanaga; D. Gerdes; D. Gruen; R. A. Gruendl; G. Gutierrez; K. Honscheid; B. Jain; D. James; T. Jeltema; S. Kent; R. Kron; K. Kuehn; N. Kuropatkin; O. Lahav; T. S. Li; E. Luque; M. A.G. Maia; M. Makler; M. March; J. Marshall; P. Martini; K. W. Merritt; C. Miller; R. Miquel; J. Mohr; E. Neilsen; B. Nord; R. Ogando; J. Peoples; D. Petravick; A. Pieres; A. A. Plazas; A. Queiroz

doi:10.1088/2041-8205/809/1/L4

Search for gamma-ray emission from des dwarf spheroidal galaxy candidates with Fermi-LAT data

A. Drlica-Wagner, A. Albert, K. Bechtol, M. Wood, L. Strigari, M. Sánchez-Conde, L. Baldini, R. Essig, J. Cohen-Tanugi, B. Anderson, R. Bellazzini, E. D. Bloom, R. Caputo, C. Cecchi, E. Charles, J. Chiang, A. De Angelis, S. Funk, P. Fusco, F. GarganoN. Giglietto, F. Giordano, S. Guiriec, M. Gustafsson, M. Kuss, F. Loparco, P. Lubrano, N. Mirabal, T. Mizuno, A. Morselli, T. Ohsugi, E. Orlando, M. Persic, S. Rainò, N. Sehgal, F. Spada, D. J. Suson, G. Zaharijas, S. Zimmer, T. Abbott, S. Allam, E. Balbinot, A. H. Bauer, A. Benoit-Lévy, R. A. Bernstein, G. M. Bernstein, E. Bertin, D. Brooks, E. Buckley-Geer, D. L. Burke, A. Carnero Rosell, F. J. Castander, R. Covarrubias, C. B. D'Andrea, L. N.Da Costa, D. L. Depoy, S. Desai, H. T. Diehl, C. E. Cunha, T. F. Eifler, J. Estrada, A. E. Evrard, A. Fausti Neto, E. Fernandez, D. A. Finley, B. Flaugher, J. Frieman, E. Gaztanaga, D. Gerdes, D. Gruen, R. A. Gruendl, G. Gutierrez, K. Honscheid, B. Jain, D. James, T. Jeltema, S. Kent, R. Kron, K. Kuehn, N. Kuropatkin, O. Lahav, T. S. Li, E. Luque, M. A.G. Maia, M. Makler, M. March, J. Marshall, P. Martini, K. W. Merritt, C. Miller, R. Miquel, J. Mohr, E. Neilsen, B. Nord, R. Ogando, J. Peoples, D. Petravick, A. Pieres, A. A. Plazas, A. Queiroz

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Abstract

© 2015. The American Astronomical Society. All rights reserved.. Due to their proximity, high dark-matter (DM) content, and apparent absence of non-thermal processes, Milky Way dwarf spheroidal satellite galaxies (dSphs) are excellent targets for the indirect detection of DM. Recently, eight new dSph candidates were discovered using the first year of data from the Dark Energy Survey (DES). We searched for gamma-ray emission coincident with the positions of these new objects in six years of Fermi Large Area Telescope data. We found no significant excesses of gamma-ray emission. Under the assumption that the DES candidates are dSphs with DM halo properties similar to the known dSphs, we computed individual and combined limits on the velocity-averaged DM annihilation cross section for these new targets. If the estimated DM content of these dSph candidates is confirmed, they will constrain the annihilation cross section to lie below the thermal relic cross section for DM particles with masses annihilating via the or τ⁺τ^- channels.

Original language	English
Article number	L4
Journal	Astrophysical Journal Letters
Volume	809
Issue number	1
DOIs	https://doi.org/10.1088/2041-8205/809/1/L4
Publication status	Published - 10 Aug 2015

Keywords

dark matter
galaxies: dwarf
gamma rays: galaxies
Local Group

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10.1088/2041-8205/809/1/L4

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Drlica-Wagner, A., Albert, A., Bechtol, K., Wood, M., Strigari, L., Sánchez-Conde, M., Baldini, L., Essig, R., Cohen-Tanugi, J., Anderson, B., Bellazzini, R., Bloom, E. D., Caputo, R., Cecchi, C., Charles, E., Chiang, J., Angelis, A. D., Funk, S., Fusco, P., ... Queiroz, A. (2015). Search for gamma-ray emission from des dwarf spheroidal galaxy candidates with Fermi-LAT data. Astrophysical Journal Letters, 809(1), [L4]. https://doi.org/10.1088/2041-8205/809/1/L4

@article{4812628ba8bd42fda0f3f4fa9529316b,

title = "Search for gamma-ray emission from des dwarf spheroidal galaxy candidates with Fermi-LAT data",

abstract = "{\textcopyright} 2015. The American Astronomical Society. All rights reserved.. Due to their proximity, high dark-matter (DM) content, and apparent absence of non-thermal processes, Milky Way dwarf spheroidal satellite galaxies (dSphs) are excellent targets for the indirect detection of DM. Recently, eight new dSph candidates were discovered using the first year of data from the Dark Energy Survey (DES). We searched for gamma-ray emission coincident with the positions of these new objects in six years of Fermi Large Area Telescope data. We found no significant excesses of gamma-ray emission. Under the assumption that the DES candidates are dSphs with DM halo properties similar to the known dSphs, we computed individual and combined limits on the velocity-averaged DM annihilation cross section for these new targets. If the estimated DM content of these dSph candidates is confirmed, they will constrain the annihilation cross section to lie below the thermal relic cross section for DM particles with masses annihilating via the or τ+τ- channels.",

keywords = "dark matter, galaxies: dwarf, gamma rays: galaxies, Local Group",

author = "A. Drlica-Wagner and A. Albert and K. Bechtol and M. Wood and L. Strigari and M. S{\'a}nchez-Conde and L. Baldini and R. Essig and J. Cohen-Tanugi and B. Anderson and R. Bellazzini and Bloom, {E. D.} and R. Caputo and C. Cecchi and E. Charles and J. Chiang and Angelis, {A. De} and S. Funk and P. Fusco and F. Gargano and N. Giglietto and F. Giordano and S. Guiriec and M. Gustafsson and M. Kuss and F. Loparco and P. Lubrano and N. Mirabal and T. Mizuno and A. Morselli and T. Ohsugi and E. Orlando and M. Persic and S. Rain{\`o} and N. Sehgal and F. Spada and Suson, {D. J.} and G. Zaharijas and S. Zimmer and T. Abbott and S. Allam and E. Balbinot and Bauer, {A. H.} and A. Benoit-L{\'e}vy and Bernstein, {R. A.} and Bernstein, {G. M.} and E. Bertin and D. Brooks and E. Buckley-Geer and Burke, {D. L.} and Rosell, {A. Carnero} and Castander, {F. J.} and R. Covarrubias and D'Andrea, {C. B.} and Costa, {L. N.Da} and Depoy, {D. L.} and S. Desai and Diehl, {H. T.} and Cunha, {C. E.} and Eifler, {T. F.} and J. Estrada and Evrard, {A. E.} and Neto, {A. Fausti} and E. Fernandez and Finley, {D. A.} and B. Flaugher and J. Frieman and E. Gaztanaga and D. Gerdes and D. Gruen and Gruendl, {R. A.} and G. Gutierrez and K. Honscheid and B. Jain and D. James and T. Jeltema and S. Kent and R. Kron and K. Kuehn and N. Kuropatkin and O. Lahav and Li, {T. S.} and E. Luque and Maia, {M. A.G.} and M. Makler and M. March and J. Marshall and P. Martini and Merritt, {K. W.} and C. Miller and R. Miquel and J. Mohr and E. Neilsen and B. Nord and R. Ogando and J. Peoples and D. Petravick and A. Pieres and Plazas, {A. A.} and A. Queiroz",

year = "2015",

month = aug,

day = "10",

doi = "10.1088/2041-8205/809/1/L4",

language = "English",

volume = "809",

journal = "The astrophysical journal. Letters (Print)",

issn = "2041-8205",

number = "1",

}

Drlica-Wagner, A, Albert, A, Bechtol, K, Wood, M, Strigari, L, Sánchez-Conde, M, Baldini, L, Essig, R, Cohen-Tanugi, J, Anderson, B, Bellazzini, R, Bloom, ED, Caputo, R, Cecchi, C, Charles, E, Chiang, J, Angelis, AD, Funk, S, Fusco, P, Gargano, F, Giglietto, N, Giordano, F, Guiriec, S, Gustafsson, M, Kuss, M, Loparco, F, Lubrano, P, Mirabal, N, Mizuno, T, Morselli, A, Ohsugi, T, Orlando, E, Persic, M, Rainò, S, Sehgal, N, Spada, F, Suson, DJ, Zaharijas, G, Zimmer, S, Abbott, T, Allam, S, Balbinot, E, Bauer, AH, Benoit-Lévy, A, Bernstein, RA, Bernstein, GM, Bertin, E, Brooks, D, Buckley-Geer, E, Burke, DL, Rosell, AC, Castander, FJ, Covarrubias, R, D'Andrea, CB, Costa, LND, Depoy, DL, Desai, S, Diehl, HT, Cunha, CE, Eifler, TF, Estrada, J, Evrard, AE, Neto, AF, Fernandez, E, Finley, DA, Flaugher, B, Frieman, J, Gaztanaga, E, Gerdes, D, Gruen, D, Gruendl, RA, Gutierrez, G, Honscheid, K, Jain, B, James, D, Jeltema, T, Kent, S, Kron, R, Kuehn, K, Kuropatkin, N, Lahav, O, Li, TS, Luque, E, Maia, MAG, Makler, M, March, M, Marshall, J, Martini, P, Merritt, KW, Miller, C, Miquel, R, Mohr, J, Neilsen, E, Nord, B, Ogando, R, Peoples, J, Petravick, D, Pieres, A, Plazas, AA & Queiroz, A 2015, 'Search for gamma-ray emission from des dwarf spheroidal galaxy candidates with Fermi-LAT data', Astrophysical Journal Letters, vol. 809, no. 1, L4. https://doi.org/10.1088/2041-8205/809/1/L4

TY - JOUR

T1 - Search for gamma-ray emission from des dwarf spheroidal galaxy candidates with Fermi-LAT data

AU - Drlica-Wagner, A.

AU - Albert, A.

AU - Bechtol, K.

AU - Wood, M.

AU - Strigari, L.

AU - Sánchez-Conde, M.

AU - Baldini, L.

AU - Essig, R.

AU - Cohen-Tanugi, J.

AU - Anderson, B.

AU - Bellazzini, R.

AU - Bloom, E. D.

AU - Caputo, R.

AU - Cecchi, C.

AU - Charles, E.

AU - Chiang, J.

AU - Angelis, A. De

AU - Funk, S.

AU - Fusco, P.

AU - Gargano, F.

AU - Giglietto, N.

AU - Giordano, F.

AU - Guiriec, S.

AU - Gustafsson, M.

AU - Kuss, M.

AU - Loparco, F.

AU - Lubrano, P.

AU - Mirabal, N.

AU - Mizuno, T.

AU - Morselli, A.

AU - Ohsugi, T.

AU - Orlando, E.

AU - Persic, M.

AU - Rainò, S.

AU - Sehgal, N.

AU - Spada, F.

AU - Suson, D. J.

AU - Zaharijas, G.

AU - Zimmer, S.

AU - Abbott, T.

AU - Allam, S.

AU - Balbinot, E.

AU - Bauer, A. H.

AU - Benoit-Lévy, A.

AU - Bernstein, R. A.

AU - Bernstein, G. M.

AU - Bertin, E.

AU - Brooks, D.

AU - Buckley-Geer, E.

AU - Burke, D. L.

AU - Rosell, A. Carnero

AU - Castander, F. J.

AU - Covarrubias, R.

AU - D'Andrea, C. B.

AU - Costa, L. N.Da

AU - Depoy, D. L.

AU - Desai, S.

AU - Diehl, H. T.

AU - Cunha, C. E.

AU - Eifler, T. F.

AU - Estrada, J.

AU - Evrard, A. E.

AU - Neto, A. Fausti

AU - Fernandez, E.

AU - Finley, D. A.

AU - Flaugher, B.

AU - Frieman, J.

AU - Gaztanaga, E.

AU - Gerdes, D.

AU - Gruen, D.

AU - Gruendl, R. A.

AU - Gutierrez, G.

AU - Honscheid, K.

AU - Jain, B.

AU - James, D.

AU - Jeltema, T.

AU - Kent, S.

AU - Kron, R.

AU - Kuehn, K.

AU - Kuropatkin, N.

AU - Lahav, O.

AU - Li, T. S.

AU - Luque, E.

AU - Maia, M. A.G.

AU - Makler, M.

AU - March, M.

AU - Marshall, J.

AU - Martini, P.

AU - Merritt, K. W.

AU - Miller, C.

AU - Miquel, R.

AU - Mohr, J.

AU - Neilsen, E.

AU - Nord, B.

AU - Ogando, R.

AU - Peoples, J.

AU - Petravick, D.

AU - Pieres, A.

AU - Plazas, A. A.

AU - Queiroz, A.

PY - 2015/8/10

Y1 - 2015/8/10

N2 - © 2015. The American Astronomical Society. All rights reserved.. Due to their proximity, high dark-matter (DM) content, and apparent absence of non-thermal processes, Milky Way dwarf spheroidal satellite galaxies (dSphs) are excellent targets for the indirect detection of DM. Recently, eight new dSph candidates were discovered using the first year of data from the Dark Energy Survey (DES). We searched for gamma-ray emission coincident with the positions of these new objects in six years of Fermi Large Area Telescope data. We found no significant excesses of gamma-ray emission. Under the assumption that the DES candidates are dSphs with DM halo properties similar to the known dSphs, we computed individual and combined limits on the velocity-averaged DM annihilation cross section for these new targets. If the estimated DM content of these dSph candidates is confirmed, they will constrain the annihilation cross section to lie below the thermal relic cross section for DM particles with masses annihilating via the or τ+τ- channels.

AB - © 2015. The American Astronomical Society. All rights reserved.. Due to their proximity, high dark-matter (DM) content, and apparent absence of non-thermal processes, Milky Way dwarf spheroidal satellite galaxies (dSphs) are excellent targets for the indirect detection of DM. Recently, eight new dSph candidates were discovered using the first year of data from the Dark Energy Survey (DES). We searched for gamma-ray emission coincident with the positions of these new objects in six years of Fermi Large Area Telescope data. We found no significant excesses of gamma-ray emission. Under the assumption that the DES candidates are dSphs with DM halo properties similar to the known dSphs, we computed individual and combined limits on the velocity-averaged DM annihilation cross section for these new targets. If the estimated DM content of these dSph candidates is confirmed, they will constrain the annihilation cross section to lie below the thermal relic cross section for DM particles with masses annihilating via the or τ+τ- channels.

KW - dark matter

KW - galaxies: dwarf

KW - gamma rays: galaxies

KW - Local Group

U2 - 10.1088/2041-8205/809/1/L4

DO - 10.1088/2041-8205/809/1/L4

M3 - Article

SN - 2041-8205

VL - 809

JO - The astrophysical journal. Letters (Print)

JF - The astrophysical journal. Letters (Print)

IS - 1

M1 - L4

ER -

Search for gamma-ray emission from des dwarf spheroidal galaxy candidates with Fermi-LAT data

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Keywords

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