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; A. K. Romer; A. Roodman; E. S. Rykoff; M. Sako; E. Sanchez; B. Santiago; V. Scarpine; M. Schubnell; I. Sevilla; R. C. Smith; M. Soares-Santos; F. Sobreira; E. Suchyta; M. E.C. Swanson; G. Tarle; J. Thaler; D. Thomas; D. Tucker; A. R. Walker; R. H. Wechsler; W. Wester; P. Williams; B. Yanny; J. Zuntz

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, A. K. Romer, A. Roodman, E. S. Rykoff, M. Sako, E. Sanchez, B. Santiago, V. Scarpine, M. Schubnell, I. Sevilla, R. C. Smith, M. Soares-Santos, F. Sobreira, E. Suchyta, M. E.C. Swanson, G. Tarle, J. Thaler, D. Thomas, D. Tucker, A. R. Walker, R. H. Wechsler, W. Wester, P. Williams, B. Yanny, J. Zuntz

Research output: Contribution to journal › Article › peer-review

Abstract

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 (US)
Article number	L4
Journal	Astrophysical Journal Letters
Volume	809
Issue number	1
DOIs	https://doi.org/10.1088/2041-8205/809/1/L4
State	Published - Aug 10 2015

Keywords

Local Group
dark matter
galaxies: dwarf
gamma rays: galaxies

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Online availability

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., ... Zuntz, J. (2015). Search for gamma-ray emission from des dwarf spheroidal galaxy candidates with Fermi-LAT data. Astrophysical Journal Letters, 809(1), Article L4. https://doi.org/10.1088/2041-8205/809/1/L4

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, Romer, AK, Roodman, A, Rykoff, ES, Sako, M, Sanchez, E, Santiago, B, Scarpine, V, Schubnell, M, Sevilla, I, Smith, RC, Soares-Santos, M, Sobreira, F, Suchyta, E, Swanson, MEC, Tarle, G, Thaler, J, Thomas, D, Tucker, D, Walker, AR, Wechsler, RH, Wester, W, Williams, P, Yanny, B & Zuntz, J 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

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

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

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 and Romer, {A. K.} and A. Roodman and Rykoff, {E. S.} and M. Sako and E. Sanchez and B. Santiago and V. Scarpine and M. Schubnell and I. Sevilla and Smith, {R. C.} and M. Soares-Santos and F. Sobreira and E. Suchyta and Swanson, {M. E.C.} and G. Tarle and J. Thaler and D. Thomas and D. Tucker and Walker, {A. R.} and Wechsler, {R. H.} and W. Wester and P. Williams and B. Yanny and J. Zuntz",

year = "2015",

month = aug,

day = "10",

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

language = "English (US)",

volume = "809",

journal = "Astrophysical Journal Letters",

issn = "2041-8205",

publisher = "IOP Publishing Ltd.",

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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.

AU - Romer, A. K.

AU - Roodman, A.

AU - Rykoff, E. S.

AU - Sako, M.

AU - Sanchez, E.

AU - Santiago, B.

AU - Scarpine, V.

AU - Schubnell, M.

AU - Sevilla, I.

AU - Smith, R. C.

AU - Soares-Santos, M.

AU - Sobreira, F.

AU - Suchyta, E.

AU - Swanson, M. E.C.

AU - Tarle, G.

AU - Thaler, J.

AU - Thomas, D.

AU - Tucker, D.

AU - Walker, A. R.

AU - Wechsler, R. H.

AU - Wester, W.

AU - Williams, P.

AU - Yanny, B.

AU - Zuntz, J.

PY - 2015/8/10

Y1 - 2015/8/10

N2 - 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 - 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 - Local Group

KW - dark matter

KW - galaxies: dwarf

KW - gamma rays: galaxies

UR - http://www.scopus.com/inward/record.url?scp=84939148773&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84939148773&partnerID=8YFLogxK

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

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

M3 - Article

AN - SCOPUS:84939148773

SN - 2041-8205

VL - 809

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 1

M1 - L4

ER -

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

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