Search for point sources of ultra-high-energy cosmic rays above 4.0 x 1019 eV using a maximum likelihood ratio test

被引：35

作者：

Abbasi, RU ^{[1
]}

Abu-Zayyad, T

Amann, JF

Archbold, G

Atkins, R

Bellido, JA

Belov, K

Belz, JW

Ben-Zvi, SY

Bergman, DR

Boyer, JH

Burt, GW

Cao, Z

Clay, RW

Connolly, BM

Dawson, BR

Deng, W

Farrar, GR

Fedorova, Y

Findlay, J

Finley, CB

Hanlon, WF

Hoffman, CM

Holzscheiter, MH

Hughes, GA

Hüntemeyer, P

Jui, CCH

Kim, K

Kirn, MA

Knapp, BC

Loh, EC

Maestas, MM

Manago, N

Mannel, EJ

Marek, LJ

Martens, K

Matthews, JAJ

Matthews, JN

O'Neill, A

Painter, CA

Perera, L

Reil, K

Riehle, R

Roberts, MD

Sasaki, M

Schnetzer, SR

Seman, M

Simpson, KM

Sinnis, G

Smith, JD

机构：

[1] Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA

[2] Univ Utah, High Energy Astrophys Inst, Salt Lake City, UT 84112 USA

[3] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[4] Univ Adelaide, Dept Phys, Adelaide, SA 5005, Australia

[5] Univ Montana, Dept Phys & Astron, Missoula, MT 59812 USA

[6] Columbia Univ, Dept Phys, New York, NY 10027 USA

[7] Columbia Univ, Nevis Labs, New York, NY 10027 USA

[8] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA

[9] NYU, Dept Phys, Ctr Cosmol & Particle Phys, New York, NY 10003 USA

[10] Univ Tokyo, Inst Cosm Ray Res, Kashiwa, Chiba 2778582, Japan

[11] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA

来源：

ASTROPHYSICAL JOURNAL | 2005年 / 623卷 / 01期

关键词：

acceleration of particles; cosmic rays; large-scale structure of universe;

D O I：

10.1086/428570

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the results of a search for cosmic-ray point sources at energies in excess of 4.0 x 10(19) eV in the combined data sets recorded by the Akeno Giant Air Shower Array and High Resolution Fly's Eye stereo experiments. The analysis is based on a maximum likelihood ratio test using the probability density function for each event rather than requiring an a priori choice of a fixed angular bin size. No statistically significant clustering of events consistent with a point source is found.

引用

页码：164 / 170

页数：7

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