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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 $$\lesssim 20\,\mathrm{GeV}$$ annihilating via the $$b\bar{b}$$ or τ(+)τ(-) channels.

Authors:
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Publication Date:
Research Org.:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Argonne National Laboratory (ANL), Argonne, IL (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Org.:
National Aeronautics and Space Administration (NASA); European Union (EU); National Science Foundation (NSF); USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Org.:
The Fermi-LAT Collaboration; The DES Collaboration; Fermi-LAT; DES
OSTI Identifier:
1354924
Alternate Identifier(s):
OSTI ID: 1252998
Report Number(s):
FERMILAB-PUB-15-082-AE; arXiv:1503.02632
Journal ID: ISSN 2041-8213
Grant/Contract Number:  
AC02-76SF00515; AC02-98CH10886; AYA2012-39559; ESP2013-4827; FPA2013-47986; AC02-07CH11359
Resource Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal. Letters (Online)
Additional Journal Information:
Journal Name: The Astrophysical Journal. Letters (Online); Journal Volume: 809; Journal Issue: 1; Journal ID: ISSN 2041-8213
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; dark matter; galaxies: dwarf; gamma rays: galaxies; Local Group; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

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. de, 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, D. J., Zaharijas, G., Zimmer, S., Abbott, T., Allam, S., Balbinot, E., Bauer, A. H., Benoit-Lévy, A., Bernstein, R. A., Bernstein, G. M., Bertin, E., Brooks, D., Buckley-Geer, E., Burke, D. L., Rosell, A. Carnero, Castander, F. J., Covarrubias, R., D’Andrea, C. B., Costa, L. N. da, DePoy, D. L., Desai, S., Diehl, H. T., Cunha, C. E., Eifler, T. F., Estrada, J., Evrard, A. E., Neto, A. Fausti, Fernandez, E., Finley, D. A., Flaugher, B., Frieman, J., Gaztanaga, E., Gerdes, D., Gruen, D., Gruendl, R. A., Gutierrez, G., Honscheid, K., Jain, B., James, D., Jeltema, T., Kent, S., Kron, R., Kuehn, K., Kuropatkin, N., Lahav, O., Li, T. S., Luque, E., Maia, M. A. G., Makler, M., March, M., Marshall, J., Martini, P., Merritt, K. W., Miller, C., Miquel, R., Mohr, J., Neilsen, E., Nord, B., Ogando, R., Peoples, J., Petravick, D., Pieres, A., Plazas, A. A., Queiroz, A., Romer, A. K., Roodman, A., Rykoff, E. S., Sako, M., Sanchez, E., Santiago, B., Scarpine, V., Schubnell, M., Sevilla, I., Smith, R. C., Soares-Santos, M., Sobreira, F., Suchyta, E., Swanson, M. E. C., Tarle, G., Thaler, J., Thomas, D., Tucker, D., Walker, A. R., Wechsler, R. H., Wester, W., Williams, P., Yanny, B., and Zuntz, J. Search for gamma-ray emission from des dwarf spheroidal galaxy candidates with Fermi LAT data. United States: N. p., 2015. Web. doi: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. de, 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, D. J., Zaharijas, G., Zimmer, S., Abbott, T., Allam, S., Balbinot, E., Bauer, A. H., Benoit-Lévy, A., Bernstein, R. A., Bernstein, G. M., Bertin, E., Brooks, D., Buckley-Geer, E., Burke, D. L., Rosell, A. Carnero, Castander, F. J., Covarrubias, R., D’Andrea, C. B., Costa, L. N. da, DePoy, D. L., Desai, S., Diehl, H. T., Cunha, C. E., Eifler, T. F., Estrada, J., Evrard, A. E., Neto, A. Fausti, Fernandez, E., Finley, D. A., Flaugher, B., Frieman, J., Gaztanaga, E., Gerdes, D., Gruen, D., Gruendl, R. A., Gutierrez, G., Honscheid, K., Jain, B., James, D., Jeltema, T., Kent, S., Kron, R., Kuehn, K., Kuropatkin, N., Lahav, O., Li, T. S., Luque, E., Maia, M. A. G., Makler, M., March, M., Marshall, J., Martini, P., Merritt, K. W., Miller, C., Miquel, R., Mohr, J., Neilsen, E., Nord, B., Ogando, R., Peoples, J., Petravick, D., Pieres, A., Plazas, A. A., Queiroz, A., Romer, A. K., Roodman, A., Rykoff, E. S., Sako, M., Sanchez, E., Santiago, B., Scarpine, V., Schubnell, M., Sevilla, I., Smith, R. C., Soares-Santos, M., Sobreira, F., Suchyta, E., Swanson, M. E. C., Tarle, G., Thaler, J., Thomas, D., Tucker, D., Walker, A. R., Wechsler, R. H., Wester, W., Williams, P., Yanny, B., & Zuntz, J. Search for gamma-ray emission from des dwarf spheroidal galaxy candidates with Fermi LAT data. United States. https://doi.org/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. de, 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, D. J., Zaharijas, G., Zimmer, S., Abbott, T., Allam, S., Balbinot, E., Bauer, A. H., Benoit-Lévy, A., Bernstein, R. A., Bernstein, G. M., Bertin, E., Brooks, D., Buckley-Geer, E., Burke, D. L., Rosell, A. Carnero, Castander, F. J., Covarrubias, R., D’Andrea, C. B., Costa, L. N. da, DePoy, D. L., Desai, S., Diehl, H. T., Cunha, C. E., Eifler, T. F., Estrada, J., Evrard, A. E., Neto, A. Fausti, Fernandez, E., Finley, D. A., Flaugher, B., Frieman, J., Gaztanaga, E., Gerdes, D., Gruen, D., Gruendl, R. A., Gutierrez, G., Honscheid, K., Jain, B., James, D., Jeltema, T., Kent, S., Kron, R., Kuehn, K., Kuropatkin, N., Lahav, O., Li, T. S., Luque, E., Maia, M. A. G., Makler, M., March, M., Marshall, J., Martini, P., Merritt, K. W., Miller, C., Miquel, R., Mohr, J., Neilsen, E., Nord, B., Ogando, R., Peoples, J., Petravick, D., Pieres, A., Plazas, A. A., Queiroz, A., Romer, A. K., Roodman, A., Rykoff, E. S., Sako, M., Sanchez, E., Santiago, B., Scarpine, V., Schubnell, M., Sevilla, I., Smith, R. C., Soares-Santos, M., Sobreira, F., Suchyta, E., Swanson, M. E. C., Tarle, G., Thaler, J., Thomas, D., Tucker, D., Walker, A. R., Wechsler, R. H., Wester, W., Williams, P., Yanny, B., and Zuntz, J. Tue . "Search for gamma-ray emission from des dwarf spheroidal galaxy candidates with Fermi LAT data". United States. https://doi.org/10.1088/2041-8205/809/1/L4. https://www.osti.gov/servlets/purl/1354924.
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@article{osti_1354924,
title = {Search for gamma-ray emission from des dwarf spheroidal galaxy candidates with Fermi LAT data},
author = {Drlica-Wagner, A. and Albert, A. and Bechtol, K. and Wood, M. and Strigari, L. and Sánchez-Conde, M. and Baldini, L. and Essig, R. and Cohen-Tanugi, J. and Anderson, B. and Bellazzini, R. and Bloom, E. D. and Caputo, R. and Cecchi, C. and Charles, E. and Chiang, J. and Angelis, A. de and Funk, S. and Fusco, P. and Gargano, F. and Giglietto, N. and Giordano, F. and Guiriec, S. and Gustafsson, M. and Kuss, M. and Loparco, F. and Lubrano, P. and Mirabal, N. and Mizuno, T. and Morselli, A. and Ohsugi, T. and Orlando, E. and Persic, M. and Rainò, S. and Sehgal, N. and Spada, F. and Suson, D. J. and Zaharijas, G. and Zimmer, S. and Abbott, T. and Allam, S. and Balbinot, E. and Bauer, A. H. and Benoit-Lévy, A. and Bernstein, R. A. and Bernstein, G. M. and Bertin, E. and Brooks, D. and Buckley-Geer, E. and Burke, D. L. and Rosell, A. Carnero and Castander, F. J. and Covarrubias, R. and D’Andrea, C. B. and Costa, L. N. da and DePoy, D. L. and Desai, S. and Diehl, H. T. and Cunha, C. E. and Eifler, T. F. and Estrada, J. and Evrard, A. E. and Neto, A. Fausti and Fernandez, E. and Finley, D. A. and Flaugher, B. and Frieman, J. and Gaztanaga, E. and Gerdes, D. and Gruen, D. and Gruendl, R. A. and Gutierrez, G. and Honscheid, K. and Jain, B. and James, D. and Jeltema, T. and Kent, S. and Kron, R. and Kuehn, K. and Kuropatkin, N. and Lahav, O. and Li, T. S. and Luque, E. and Maia, M. A. G. and Makler, M. and March, M. and Marshall, J. and Martini, P. and Merritt, K. W. and Miller, C. and Miquel, R. and Mohr, J. and Neilsen, E. and Nord, B. and Ogando, R. and Peoples, J. and Petravick, D. and Pieres, A. and Plazas, A. A. and Queiroz, A. and Romer, A. K. and Roodman, A. and Rykoff, E. S. and Sako, M. and Sanchez, E. and Santiago, B. and Scarpine, V. and Schubnell, M. and Sevilla, I. and Smith, R. C. and Soares-Santos, M. and Sobreira, F. and Suchyta, E. and Swanson, M. E. C. and Tarle, G. and Thaler, J. and Thomas, D. and Tucker, D. and Walker, A. R. and Wechsler, R. H. and Wester, W. and Williams, P. and Yanny, B. and Zuntz, J.},
abstractNote = {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 $\lesssim 20\,\mathrm{GeV}$ annihilating via the $b\bar{b}$ or τ(+)τ(-) channels.},
doi = {10.1088/2041-8205/809/1/L4},
journal = {The Astrophysical Journal. Letters (Online)},
number = 1,
volume = 809,
place = {United States},
year = {Tue Aug 04 00:00:00 EDT 2015},
month = {Tue Aug 04 00:00:00 EDT 2015}
}
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    • Chiappo, A.; Cohen-Tanugi, J.; Conrad, J.
    • Monthly Notices of the Royal Astronomical Society, Vol. 488, Issue 2
    • DOI: 10.1093/mnras/stz1871

    Extragalactic background light measurements and applications
    journal, March 2016

    Directional detection of dark matter in universal bound states
    journal, October 2015

    Prospects for Higgs- and Z -resonant neutralino dark matter
    journal, March 2016

    Searching for singlino-Higgsino dark matter in the NMSSM
    journal, September 2016

    Study of WIMP annihilations into a pair of on-shell scalar mediators
    journal, November 2016

    Realistic estimation for the detectability of dark matter subhalos using Fermi-LAT catalogs
    journal, September 2017

    SEARCHING FOR DARK MATTER ANNIHILATION IN RECENTLY DISCOVERED MILKY WAY SATELLITES WITH FERMI -LAT
    journal, January 2017

    Nearest Neighbor: The Low-mass Milky Way Satellite Tucana III
    journal, March 2017

    Farthest Neighbor: The Distant Milky Way Satellite Eridanus II
    journal, March 2017

    Triangulum II. Not Especially Dense After All
    journal, March 2017

    • Kirby, Evan N.; Cohen, Judith G.; Simon, Joshua D.
    • The Astrophysical Journal, Vol. 838, Issue 2
    • DOI: 10.3847/1538-4357/aa6570

    Mapping the Tidal Destruction of the Hercules Dwarf: A Wide-field DECam Imaging Search for RR Lyrae Stars
    journal, January 2018

    • Garling, Christopher; Willman, Beth; Sand, David J.
    • The Astrophysical Journal, Vol. 852, Issue 1
    • DOI: 10.3847/1538-4357/aa9bf1

    Ships Passing in the Night: Spectroscopic Analysis of Two Ultra-faint Satellites in the Constellation Carina
    journal, April 2018

    LSST: From Science Drivers to Reference Design and Anticipated Data Products
    journal, March 2019

    • Ivezić, Željko; Kahn, Steven M.; Tyson, J. Anthony
    • The Astrophysical Journal, Vol. 873, Issue 2
    • DOI: 10.3847/1538-4357/ab042c

    Proper Motions of Milky Way Ultra-faint Satellites with Gaia DR2 × DES DR1
    journal, April 2019

    Indirect dark matter detection for flattened dwarf galaxies
    text, January 2016

    • Sanders, Jason; Evans, Wyn; Geringer-Sameth, Alex
    • Apollo - University of Cambridge Repository
    • DOI: 10.17863/cam.4855

    LSST: from Science Drivers to Reference Design and Anticipated Data Products
    text, January 2008

    Twin Higgs WIMP Dark Matter
    text, January 2015

    Dark matter cores all the way down
    text, January 2015

    Prospects for Higgs- and Z-resonant Neutralino Dark Matter
    text, January 2015

    The Dark Energy Survey: more than dark energy - an overview
    text, January 2016

    Is The Gamma-Ray Source 3FGL J2212.5+0703 A Dark Matter Subhalo?
    text, January 2016

    Indirect Dark Matter Detection for Flattened Dwarf Galaxies
    text, January 2016

    Searching for Singlino-Higgsino Dark Matter in the NMSSM
    text, January 2016

    Complete element abundances of nine stars in the r-process galaxy Reticulum II
    text, January 2016

    Searching for Dark Matter Annihilation in Recently Discovered Milky Way Satellites with Fermi-LAT
    text, January 2016

    Farthest Neighbor: The Distant Milky Way Satellite Eridanus II
    text, January 2016

    Search for right-handed neutrinos from dark matter annihilation with gamma-rays
    text, January 2017

    WIMP dark matter candidates and searches - current status and future prospects
    text, January 2017

    Mapping the Tidal Disruption of the Hercules Dwarf: A Wide-Field DECam Imaging Search for RR Lyrae Stars
    text, January 2017

    Snake in the Clouds: A new nearby dwarf galaxy in the Magellanic bridge
    text, January 2018

    Dark matter in Hidden Valley models with stable and unstable light dark mesons
    text, January 2018

    Dwarf spheroidal $J$-factor likelihoods for generalized NFW profiles
    text, January 2018

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