A NORTHERN SKY SURVEY FOR POINT-LIKE SOURCES OF EeV NEUTRAL PARTICLES WITH THE TELESCOPE ARRAY EXPERIMENT

ABSTRACT We report on the search for steady point-like sources of neutral particles around 1018 eV between 2008 and 2013 May with the scintillator SD of the Telescope Array experiment. We found overall no significant point-like excess above 0.5 EeV in the northern sky. Subsequently, we also searched...

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Veröffentlicht in:The Astrophysical journal 2015-05, Vol.804 (2), p.1-11
Hauptverfasser: Abbasi, R. U., Abe, M., Zayyad, T. Abu, Allen, M., Anderson, R., Barcikowski, E., Belz, J. W., Bergman, D. R., Blake, S. A., Cady, R., Chae, M. J., Cheon, B. G., Chiba, J., Chikawa, M., Cho, W. R., Fujii, T., Fukushima, M., Goto, T., Hanlon, W., Hayashi, Y., Honda, K., Ikeda, D., Inoue, N., Ishii, T., Ishimori, R., Ito, H., Jui, C. C. H., Kadota, K., Kakimoto, F., Kalashev, O., Kasahara, K., Kawai, H., Kawakami, S., Kawana, S., Kido, E., Kim, H. B., Kim, J. H., Kitamura, S., Kuzmin, V., Kwon, Y. J., Lundquist, J. P., Machida, K., Martens, K., Matsuda, T., Matsuyama, T., Matthews, J. N., Mukai, K., Nagasawa, K., Nozato, A., Ogio, S., Ogura, J., Ohnishi, M., Ohoka, H., Oki, K., Okuda, T., Ono, M., Oshima, A., Ozawa, S., Park, I. H., Pshirkov, M. S., Rodriguez, D. C., Ryu, D., Sakurai, N., Sampson, A. L., Shah, P. D., Shibata, F., Shibata, T., Shimodaira, H., Shin, B. K., Smith, J. D., Sokolsky, P., Springer, R. W., Stokes, B. T., Stratton, S. R., Stroman, T. A., Suzawa, T., Takamura, M., Takeda, M., Takeishi, R., Takita, M., Tanaka, H., Tanaka, K., Tanaka, M., Thomson, G. B., Tkachev, I., Tokuno, H., Troitsky, S., Tsunesada, Y., Tsutsumi, K., Uchihori, Y., Udo, S., Urban, F., Vasiloff, G., Wong, T., Yamane, R., Yamaoka, H., Yang, J., Yoshida, S., Zollinger, R., Zundel, Z.
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container_title The Astrophysical journal
container_volume 804
creator Abbasi, R. U.
Abe, M.
Zayyad, T. Abu
Allen, M.
Anderson, R.
Barcikowski, E.
Belz, J. W.
Bergman, D. R.
Blake, S. A.
Cady, R.
Chae, M. J.
Cheon, B. G.
Chiba, J.
Chikawa, M.
Cho, W. R.
Fujii, T.
Fukushima, M.
Goto, T.
Hanlon, W.
Hayashi, Y.
Honda, K.
Ikeda, D.
Inoue, N.
Ishii, T.
Ishimori, R.
Ito, H.
Jui, C. C. H.
Kadota, K.
Kakimoto, F.
Kalashev, O.
Kasahara, K.
Kawai, H.
Kawakami, S.
Kawana, S.
Kido, E.
Kim, H. B.
Kim, J. H.
Kitamura, S.
Kuzmin, V.
Kwon, Y. J.
Lundquist, J. P.
Machida, K.
Martens, K.
Matsuda, T.
Matsuyama, T.
Matthews, J. N.
Mukai, K.
Nagasawa, K.
Nozato, A.
Ogio, S.
Ogura, J.
Ohnishi, M.
Ohoka, H.
Oki, K.
Okuda, T.
Ono, M.
Oshima, A.
Ozawa, S.
Park, I. H.
Pshirkov, M. S.
Rodriguez, D. C.
Ryu, D.
Sakurai, N.
Sampson, A. L.
Shah, P. D.
Shibata, F.
Shibata, T.
Shimodaira, H.
Shin, B. K.
Smith, J. D.
Sokolsky, P.
Springer, R. W.
Stokes, B. T.
Stratton, S. R.
Stroman, T. A.
Suzawa, T.
Takamura, M.
Takeda, M.
Takeishi, R.
Takita, M.
Tanaka, H.
Tanaka, K.
Tanaka, M.
Thomson, G. B.
Tkachev, I.
Tokuno, H.
Troitsky, S.
Tsunesada, Y.
Tsutsumi, K.
Uchihori, Y.
Udo, S.
Urban, F.
Vasiloff, G.
Wong, T.
Yamane, R.
Yamaoka, H.
Yang, J.
Yoshida, S.
Zollinger, R.
Zundel, Z.
description ABSTRACT We report on the search for steady point-like sources of neutral particles around 1018 eV between 2008 and 2013 May with the scintillator SD of the Telescope Array experiment. We found overall no significant point-like excess above 0.5 EeV in the northern sky. Subsequently, we also searched for coincidence with the Fermi bright Galactic sources. No significant coincidence was found within the statistical uncertainty. Hence, we set an upper limit on the neutron flux that corresponds to an averaged flux of 0.07 km−2 yr−1 for EeV in the northern sky at the 95% confidence level. This is the most stringent flux upper limit in a northern sky survey assuming point-like sources. The upper limit at the 95% confidence level on the neutron flux from Cygnus X-3 is also set to 0.2 km−2 yr−1 for EeV. This is an order of magnitude lower than previous flux measurements.
doi_str_mv 10.1088/0004-637X/804/2/133
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U. ; Abe, M. ; Zayyad, T. Abu ; Allen, M. ; Anderson, R. ; Barcikowski, E. ; Belz, J. W. ; Bergman, D. R. ; Blake, S. A. ; Cady, R. ; Chae, M. J. ; Cheon, B. G. ; Chiba, J. ; Chikawa, M. ; Cho, W. R. ; Fujii, T. ; Fukushima, M. ; Goto, T. ; Hanlon, W. ; Hayashi, Y. ; Honda, K. ; Ikeda, D. ; Inoue, N. ; Ishii, T. ; Ishimori, R. ; Ito, H. ; Jui, C. C. H. ; Kadota, K. ; Kakimoto, F. ; Kalashev, O. ; Kasahara, K. ; Kawai, H. ; Kawakami, S. ; Kawana, S. ; Kido, E. ; Kim, H. B. ; Kim, J. H. ; Kitamura, S. ; Kuzmin, V. ; Kwon, Y. J. ; Lundquist, J. P. ; Machida, K. ; Martens, K. ; Matsuda, T. ; Matsuyama, T. ; Matthews, J. N. ; Mukai, K. ; Nagasawa, K. ; Nozato, A. ; Ogio, S. ; Ogura, J. ; Ohnishi, M. ; Ohoka, H. ; Oki, K. ; Okuda, T. ; Ono, M. ; Oshima, A. ; Ozawa, S. ; Park, I. H. ; Pshirkov, M. S. ; Rodriguez, D. C. ; Ryu, D. ; Sakurai, N. ; Sampson, A. L. ; Shah, P. D. ; Shibata, F. ; Shibata, T. ; Shimodaira, H. ; Shin, B. K. ; Smith, J. D. ; Sokolsky, P. ; Springer, R. W. ; Stokes, B. T. ; Stratton, S. R. ; Stroman, T. A. ; Suzawa, T. ; Takamura, M. ; Takeda, M. ; Takeishi, R. ; Takita, M. ; Tanaka, H. ; Tanaka, K. ; Tanaka, M. ; Thomson, G. B. ; Tkachev, I. ; Tokuno, H. ; Troitsky, S. ; Tsunesada, Y. ; Tsutsumi, K. ; Uchihori, Y. ; Udo, S. ; Urban, F. ; Vasiloff, G. ; Wong, T. ; Yamane, R. ; Yamaoka, H. ; Yang, J. ; Yoshida, S. ; Zollinger, R. ; Zundel, Z.</creator><creatorcontrib>Abbasi, R. U. ; Abe, M. ; Zayyad, T. Abu ; Allen, M. ; Anderson, R. ; Barcikowski, E. ; Belz, J. W. ; Bergman, D. R. ; Blake, S. A. ; Cady, R. ; Chae, M. J. ; Cheon, B. G. ; Chiba, J. ; Chikawa, M. ; Cho, W. R. ; Fujii, T. ; Fukushima, M. ; Goto, T. ; Hanlon, W. ; Hayashi, Y. ; Honda, K. ; Ikeda, D. ; Inoue, N. ; Ishii, T. ; Ishimori, R. ; Ito, H. ; Jui, C. C. H. ; Kadota, K. ; Kakimoto, F. ; Kalashev, O. ; Kasahara, K. ; Kawai, H. ; Kawakami, S. ; Kawana, S. ; Kido, E. ; Kim, H. B. ; Kim, J. H. ; Kitamura, S. ; Kuzmin, V. ; Kwon, Y. J. ; Lundquist, J. P. ; Machida, K. ; Martens, K. ; Matsuda, T. ; Matsuyama, T. ; Matthews, J. N. ; Mukai, K. ; Nagasawa, K. ; Nozato, A. ; Ogio, S. ; Ogura, J. ; Ohnishi, M. ; Ohoka, H. ; Oki, K. ; Okuda, T. ; Ono, M. ; Oshima, A. ; Ozawa, S. ; Park, I. H. ; Pshirkov, M. S. ; Rodriguez, D. C. ; Ryu, D. ; Sakurai, N. ; Sampson, A. L. ; Shah, P. D. ; Shibata, F. ; Shibata, T. ; Shimodaira, H. ; Shin, B. K. ; Smith, J. D. ; Sokolsky, P. ; Springer, R. W. ; Stokes, B. T. ; Stratton, S. R. ; Stroman, T. A. ; Suzawa, T. ; Takamura, M. ; Takeda, M. ; Takeishi, R. ; Takita, M. ; Tanaka, H. ; Tanaka, K. ; Tanaka, M. ; Thomson, G. B. ; Tkachev, I. ; Tokuno, H. ; Troitsky, S. ; Tsunesada, Y. ; Tsutsumi, K. ; Uchihori, Y. ; Udo, S. ; Urban, F. ; Vasiloff, G. ; Wong, T. ; Yamane, R. ; Yamaoka, H. ; Yang, J. ; Yoshida, S. ; Zollinger, R. ; Zundel, Z.</creatorcontrib><description>ABSTRACT We report on the search for steady point-like sources of neutral particles around 1018 eV between 2008 and 2013 May with the scintillator SD of the Telescope Array experiment. We found overall no significant point-like excess above 0.5 EeV in the northern sky. Subsequently, we also searched for coincidence with the Fermi bright Galactic sources. No significant coincidence was found within the statistical uncertainty. Hence, we set an upper limit on the neutron flux that corresponds to an averaged flux of 0.07 km−2 yr−1 for EeV in the northern sky at the 95% confidence level. This is the most stringent flux upper limit in a northern sky survey assuming point-like sources. The upper limit at the 95% confidence level on the neutron flux from Cygnus X-3 is also set to 0.2 km−2 yr−1 for EeV. This is an order of magnitude lower than previous flux measurements.</description><identifier>ISSN: 0004-637X</identifier><identifier>ISSN: 1538-4357</identifier><identifier>EISSN: 1538-4357</identifier><identifier>DOI: 10.1088/0004-637X/804/2/133</identifier><language>eng</language><publisher>United Kingdom: The American Astronomical Society</publisher><subject>acceleration of particles ; Arrays ; ASTROPHYSICS, COSMOLOGY AND ASTRONOMY ; Confidence intervals ; COSMIC RADIATION ; cosmic rays ; EEV RANGE ; NEUTRAL PARTICLES ; NEUTRON FLUX ; Northern sky ; PHOSPHORS ; Searching ; surveys ; TELESCOPES ; Uncertainty</subject><ispartof>The Astrophysical journal, 2015-05, Vol.804 (2), p.1-11</ispartof><rights>2015. The American Astronomical Society. 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H.</creatorcontrib><creatorcontrib>Pshirkov, M. S.</creatorcontrib><creatorcontrib>Rodriguez, D. C.</creatorcontrib><creatorcontrib>Ryu, D.</creatorcontrib><creatorcontrib>Sakurai, N.</creatorcontrib><creatorcontrib>Sampson, A. L.</creatorcontrib><creatorcontrib>Shah, P. D.</creatorcontrib><creatorcontrib>Shibata, F.</creatorcontrib><creatorcontrib>Shibata, T.</creatorcontrib><creatorcontrib>Shimodaira, H.</creatorcontrib><creatorcontrib>Shin, B. K.</creatorcontrib><creatorcontrib>Smith, J. D.</creatorcontrib><creatorcontrib>Sokolsky, P.</creatorcontrib><creatorcontrib>Springer, R. W.</creatorcontrib><creatorcontrib>Stokes, B. T.</creatorcontrib><creatorcontrib>Stratton, S. R.</creatorcontrib><creatorcontrib>Stroman, T. A.</creatorcontrib><creatorcontrib>Suzawa, T.</creatorcontrib><creatorcontrib>Takamura, M.</creatorcontrib><creatorcontrib>Takeda, M.</creatorcontrib><creatorcontrib>Takeishi, R.</creatorcontrib><creatorcontrib>Takita, M.</creatorcontrib><creatorcontrib>Tanaka, H.</creatorcontrib><creatorcontrib>Tanaka, K.</creatorcontrib><creatorcontrib>Tanaka, M.</creatorcontrib><creatorcontrib>Thomson, G. B.</creatorcontrib><creatorcontrib>Tkachev, I.</creatorcontrib><creatorcontrib>Tokuno, H.</creatorcontrib><creatorcontrib>Troitsky, S.</creatorcontrib><creatorcontrib>Tsunesada, Y.</creatorcontrib><creatorcontrib>Tsutsumi, K.</creatorcontrib><creatorcontrib>Uchihori, Y.</creatorcontrib><creatorcontrib>Udo, S.</creatorcontrib><creatorcontrib>Urban, F.</creatorcontrib><creatorcontrib>Vasiloff, G.</creatorcontrib><creatorcontrib>Wong, T.</creatorcontrib><creatorcontrib>Yamane, R.</creatorcontrib><creatorcontrib>Yamaoka, H.</creatorcontrib><creatorcontrib>Yang, J.</creatorcontrib><creatorcontrib>Yoshida, S.</creatorcontrib><creatorcontrib>Zollinger, R.</creatorcontrib><creatorcontrib>Zundel, Z.</creatorcontrib><title>A NORTHERN SKY SURVEY FOR POINT-LIKE SOURCES OF EeV NEUTRAL PARTICLES WITH THE TELESCOPE ARRAY EXPERIMENT</title><title>The Astrophysical journal</title><addtitle>APJ</addtitle><addtitle>Astrophys. J</addtitle><description>ABSTRACT We report on the search for steady point-like sources of neutral particles around 1018 eV between 2008 and 2013 May with the scintillator SD of the Telescope Array experiment. We found overall no significant point-like excess above 0.5 EeV in the northern sky. Subsequently, we also searched for coincidence with the Fermi bright Galactic sources. No significant coincidence was found within the statistical uncertainty. Hence, we set an upper limit on the neutron flux that corresponds to an averaged flux of 0.07 km−2 yr−1 for EeV in the northern sky at the 95% confidence level. This is the most stringent flux upper limit in a northern sky survey assuming point-like sources. The upper limit at the 95% confidence level on the neutron flux from Cygnus X-3 is also set to 0.2 km−2 yr−1 for EeV. This is an order of magnitude lower than previous flux measurements.</description><subject>acceleration of particles</subject><subject>Arrays</subject><subject>ASTROPHYSICS, COSMOLOGY AND ASTRONOMY</subject><subject>Confidence intervals</subject><subject>COSMIC RADIATION</subject><subject>cosmic rays</subject><subject>EEV RANGE</subject><subject>NEUTRAL PARTICLES</subject><subject>NEUTRON FLUX</subject><subject>Northern sky</subject><subject>PHOSPHORS</subject><subject>Searching</subject><subject>surveys</subject><subject>TELESCOPES</subject><subject>Uncertainty</subject><issn>0004-637X</issn><issn>1538-4357</issn><issn>1538-4357</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNqNkU2L2zAYhEVpYdPt_oJeBKXQi2t92JZ8NEZpzLp2UJzt5iQUWaYO2dhrOYf--yqkbC-l7OlleJ-ZwwwAHzH6ihHnIUIoChLKHkOOopCEmNI3YIFjyoOIxuwtWLwQN-C9c4eLJGm6AH0Gq1o2KyEruLnfwc1WPogdXNYSruuiaoKyuBdwU29lLjawXkJhH2Alto3MSrjOZFPkpX_8KJoV9CmwEV7m9VrATMpsB8XjWsjiu6iaD-Bdp4_O3v25t2C7FE2-Csr6W5FnZWBiROYg1Qhr2u4pTdIuQrHVrWaRpVibNMY60swQwi1ClKCWmahjex5r3KI9jrFJGb0Fn665g5t75Uw_W_PTDKeTNbPyVk4JRp76cqXGaXg-Wzerp94Zezzqkx3OTmHGEEnSJOGvQAlLOIpJ7FF6Rc00ODfZTo1T_6SnXwojdVlKXYpXlx2UX0oR5Zfyrs9XVz-M6jCcp5PvR-nx8JdRY9t5LvwH97_k340WlvY</recordid><startdate>20150510</startdate><enddate>20150510</enddate><creator>Abbasi, R. 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B.</creator><creator>Tkachev, I.</creator><creator>Tokuno, H.</creator><creator>Troitsky, S.</creator><creator>Tsunesada, Y.</creator><creator>Tsutsumi, K.</creator><creator>Uchihori, Y.</creator><creator>Udo, S.</creator><creator>Urban, F.</creator><creator>Vasiloff, G.</creator><creator>Wong, T.</creator><creator>Yamane, R.</creator><creator>Yamaoka, H.</creator><creator>Yang, J.</creator><creator>Yoshida, S.</creator><creator>Zollinger, R.</creator><creator>Zundel, Z.</creator><general>The American Astronomical Society</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>KL.</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000-0002-0109-4737</orcidid><orcidid>https://orcid.org/0000-0002-4450-7925</orcidid><orcidid>https://orcid.org/0000-0001-9779-2750</orcidid><orcidid>https://orcid.org/0000-0001-6332-2005</orcidid></search><sort><creationdate>20150510</creationdate><title>A NORTHERN SKY SURVEY FOR POINT-LIKE SOURCES OF EeV NEUTRAL PARTICLES WITH THE TELESCOPE ARRAY EXPERIMENT</title><author>Abbasi, R. U. ; Abe, M. ; Zayyad, T. Abu ; Allen, M. ; Anderson, R. ; Barcikowski, E. ; Belz, J. W. ; Bergman, D. R. ; Blake, S. A. ; Cady, R. ; Chae, M. J. ; Cheon, B. G. ; Chiba, J. ; Chikawa, M. ; Cho, W. R. ; Fujii, T. ; Fukushima, M. ; Goto, T. ; Hanlon, W. ; Hayashi, Y. ; Honda, K. ; Ikeda, D. ; Inoue, N. ; Ishii, T. ; Ishimori, R. ; Ito, H. ; Jui, C. C. H. ; Kadota, K. ; Kakimoto, F. ; Kalashev, O. ; Kasahara, K. ; Kawai, H. ; Kawakami, S. ; Kawana, S. ; Kido, E. ; Kim, H. B. ; Kim, J. H. ; Kitamura, S. ; Kuzmin, V. ; Kwon, Y. J. ; Lundquist, J. P. ; Machida, K. ; Martens, K. ; Matsuda, T. ; Matsuyama, T. ; Matthews, J. N. ; Mukai, K. ; Nagasawa, K. ; Nozato, A. ; Ogio, S. ; Ogura, J. ; Ohnishi, M. ; Ohoka, H. ; Oki, K. ; Okuda, T. ; Ono, M. ; Oshima, A. ; Ozawa, S. ; Park, I. H. ; Pshirkov, M. S. ; Rodriguez, D. C. ; Ryu, D. ; Sakurai, N. ; Sampson, A. L. ; Shah, P. D. ; Shibata, F. ; Shibata, T. ; Shimodaira, H. ; Shin, B. K. ; Smith, J. D. ; Sokolsky, P. ; Springer, R. W. ; Stokes, B. T. ; Stratton, S. R. ; Stroman, T. A. ; Suzawa, T. ; Takamura, M. ; Takeda, M. ; Takeishi, R. ; Takita, M. ; Tanaka, H. ; Tanaka, K. ; Tanaka, M. ; Thomson, G. B. ; Tkachev, I. ; Tokuno, H. ; Troitsky, S. ; Tsunesada, Y. ; Tsutsumi, K. ; Uchihori, Y. ; Udo, S. ; Urban, F. ; Vasiloff, G. ; Wong, T. ; Yamane, R. ; Yamaoka, H. ; Yang, J. ; Yoshida, S. ; Zollinger, R. ; Zundel, Z.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c502t-9a01a3db3369f405eada74e31ac951a4a7c228e00320d7c4f7b85a1d0b151c973</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>acceleration of particles</topic><topic>Arrays</topic><topic>ASTROPHYSICS, COSMOLOGY AND ASTRONOMY</topic><topic>Confidence intervals</topic><topic>COSMIC RADIATION</topic><topic>cosmic rays</topic><topic>EEV RANGE</topic><topic>NEUTRAL PARTICLES</topic><topic>NEUTRON FLUX</topic><topic>Northern sky</topic><topic>PHOSPHORS</topic><topic>Searching</topic><topic>surveys</topic><topic>TELESCOPES</topic><topic>Uncertainty</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Abbasi, R. 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B.</creatorcontrib><creatorcontrib>Tkachev, I.</creatorcontrib><creatorcontrib>Tokuno, H.</creatorcontrib><creatorcontrib>Troitsky, S.</creatorcontrib><creatorcontrib>Tsunesada, Y.</creatorcontrib><creatorcontrib>Tsutsumi, K.</creatorcontrib><creatorcontrib>Uchihori, Y.</creatorcontrib><creatorcontrib>Udo, S.</creatorcontrib><creatorcontrib>Urban, F.</creatorcontrib><creatorcontrib>Vasiloff, G.</creatorcontrib><creatorcontrib>Wong, T.</creatorcontrib><creatorcontrib>Yamane, R.</creatorcontrib><creatorcontrib>Yamaoka, H.</creatorcontrib><creatorcontrib>Yang, J.</creatorcontrib><creatorcontrib>Yoshida, S.</creatorcontrib><creatorcontrib>Zollinger, R.</creatorcontrib><creatorcontrib>Zundel, Z.</creatorcontrib><collection>CrossRef</collection><collection>Meteorological &amp; Geoastrophysical Abstracts</collection><collection>Meteorological &amp; Geoastrophysical Abstracts - Academic</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>The Astrophysical journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Abbasi, R. U.</au><au>Abe, M.</au><au>Zayyad, T. Abu</au><au>Allen, M.</au><au>Anderson, R.</au><au>Barcikowski, E.</au><au>Belz, J. W.</au><au>Bergman, D. R.</au><au>Blake, S. A.</au><au>Cady, R.</au><au>Chae, M. J.</au><au>Cheon, B. G.</au><au>Chiba, J.</au><au>Chikawa, M.</au><au>Cho, W. R.</au><au>Fujii, T.</au><au>Fukushima, M.</au><au>Goto, T.</au><au>Hanlon, W.</au><au>Hayashi, Y.</au><au>Honda, K.</au><au>Ikeda, D.</au><au>Inoue, N.</au><au>Ishii, T.</au><au>Ishimori, R.</au><au>Ito, H.</au><au>Jui, C. C. H.</au><au>Kadota, K.</au><au>Kakimoto, F.</au><au>Kalashev, O.</au><au>Kasahara, K.</au><au>Kawai, H.</au><au>Kawakami, S.</au><au>Kawana, S.</au><au>Kido, E.</au><au>Kim, H. B.</au><au>Kim, J. H.</au><au>Kitamura, S.</au><au>Kuzmin, V.</au><au>Kwon, Y. J.</au><au>Lundquist, J. P.</au><au>Machida, K.</au><au>Martens, K.</au><au>Matsuda, T.</au><au>Matsuyama, T.</au><au>Matthews, J. N.</au><au>Mukai, K.</au><au>Nagasawa, K.</au><au>Nozato, A.</au><au>Ogio, S.</au><au>Ogura, J.</au><au>Ohnishi, M.</au><au>Ohoka, H.</au><au>Oki, K.</au><au>Okuda, T.</au><au>Ono, M.</au><au>Oshima, A.</au><au>Ozawa, S.</au><au>Park, I. H.</au><au>Pshirkov, M. S.</au><au>Rodriguez, D. C.</au><au>Ryu, D.</au><au>Sakurai, N.</au><au>Sampson, A. L.</au><au>Shah, P. D.</au><au>Shibata, F.</au><au>Shibata, T.</au><au>Shimodaira, H.</au><au>Shin, B. K.</au><au>Smith, J. D.</au><au>Sokolsky, P.</au><au>Springer, R. W.</au><au>Stokes, B. T.</au><au>Stratton, S. R.</au><au>Stroman, T. A.</au><au>Suzawa, T.</au><au>Takamura, M.</au><au>Takeda, M.</au><au>Takeishi, R.</au><au>Takita, M.</au><au>Tanaka, H.</au><au>Tanaka, K.</au><au>Tanaka, M.</au><au>Thomson, G. B.</au><au>Tkachev, I.</au><au>Tokuno, H.</au><au>Troitsky, S.</au><au>Tsunesada, Y.</au><au>Tsutsumi, K.</au><au>Uchihori, Y.</au><au>Udo, S.</au><au>Urban, F.</au><au>Vasiloff, G.</au><au>Wong, T.</au><au>Yamane, R.</au><au>Yamaoka, H.</au><au>Yang, J.</au><au>Yoshida, S.</au><au>Zollinger, R.</au><au>Zundel, Z.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A NORTHERN SKY SURVEY FOR POINT-LIKE SOURCES OF EeV NEUTRAL PARTICLES WITH THE TELESCOPE ARRAY EXPERIMENT</atitle><jtitle>The Astrophysical journal</jtitle><stitle>APJ</stitle><addtitle>Astrophys. J</addtitle><date>2015-05-10</date><risdate>2015</risdate><volume>804</volume><issue>2</issue><spage>1</spage><epage>11</epage><pages>1-11</pages><issn>0004-637X</issn><issn>1538-4357</issn><eissn>1538-4357</eissn><abstract>ABSTRACT We report on the search for steady point-like sources of neutral particles around 1018 eV between 2008 and 2013 May with the scintillator SD of the Telescope Array experiment. We found overall no significant point-like excess above 0.5 EeV in the northern sky. Subsequently, we also searched for coincidence with the Fermi bright Galactic sources. No significant coincidence was found within the statistical uncertainty. Hence, we set an upper limit on the neutron flux that corresponds to an averaged flux of 0.07 km−2 yr−1 for EeV in the northern sky at the 95% confidence level. This is the most stringent flux upper limit in a northern sky survey assuming point-like sources. The upper limit at the 95% confidence level on the neutron flux from Cygnus X-3 is also set to 0.2 km−2 yr−1 for EeV. This is an order of magnitude lower than previous flux measurements.</abstract><cop>United Kingdom</cop><pub>The American Astronomical Society</pub><doi>10.1088/0004-637X/804/2/133</doi><tpages>11</tpages><orcidid>https://orcid.org/0000-0002-0109-4737</orcidid><orcidid>https://orcid.org/0000-0002-4450-7925</orcidid><orcidid>https://orcid.org/0000-0001-9779-2750</orcidid><orcidid>https://orcid.org/0000-0001-6332-2005</orcidid><oa>free_for_read</oa></addata></record>
fulltext fulltext_linktorsrc
identifier ISSN: 0004-637X
ispartof The Astrophysical journal, 2015-05, Vol.804 (2), p.1-11
issn 0004-637X
1538-4357
1538-4357
language eng
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source IOP Publishing Free Content
subjects acceleration of particles
Arrays
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
Confidence intervals
COSMIC RADIATION
cosmic rays
EEV RANGE
NEUTRAL PARTICLES
NEUTRON FLUX
Northern sky
PHOSPHORS
Searching
surveys
TELESCOPES
Uncertainty
title A NORTHERN SKY SURVEY FOR POINT-LIKE SOURCES OF EeV NEUTRAL PARTICLES WITH THE TELESCOPE ARRAY EXPERIMENT
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