2024ApJ...961...87C

Query : 2024ApJ...961...87C

2024ApJ...961...87C - Astrophys. J., 961, 87 (2024/January-3)

Small-scale Cosmic-Ray Anisotropy Observed by the GRAPES-3 Experiment at TeV Energies.

CHAKRABORTY M., AHMAD S., CHANDRA A., DUGAD S.R., GOSWAMI U.D., GUPTA S.K., HARIHARAN B., HAYASHI Y., JAGADEESAN P., JAIN A., JAIN P., KAWAKAMI S., KOI T., KOJIMA H., MAHAPATRA S., MOHANTY P.K., MOHARANA R., MURAKI Y., NAKAMURA T., NAYAK P.K., NONAKA T., OSHIMA A., PANT B.P., PATTANAIK D., PAUL S., PRADHAN G.S., RAMEEZ M., RAMESH K., SAHA S., SAHOO R., SCARIA R., SHIBATA S., TABATA T., TAKAMARU H., TANAKA K., VARSI F., YAMAZAKI K. and ZUBERI M.

Abstract (from CDS):

GRAPES-3 is a mid-altitude (2200 m) and near-equatorial (11.°4N) air shower array, overlapping in its field of view for cosmic-ray observations with experiments that are located in the Northern and Southern Hemispheres. We analyze a sample of 3.7 × 109 cosmic-ray events collected by the GRAPES-3 experiment between 2013 January 1 and 2016 December 31 with a median energy of ∼16 TeV for study of small-scale (<60°) angular-scale anisotropies. We observed two structures, labeled A and B, that deviate from the expected isotropic distribution of cosmic rays in a statistically significant manner. Structure A spans 50°-80° in R.A. and from -15° to 30° in decl. The relative excess observed in structure A is at the level of (6.5 ± 1.3) × 10–4 with a statistical significance of 6.8 standard deviations. Structure B is observed in the R.A. range 110°-140° and at decl. from -10° to 30°. The relative excess observed in this region is at the level of (4.9 ± 1.4) × 10–4 with a statistical significance of 4.7 standard deviations. These structures are consistent with those reported by Milagro, ARGO-YBJ, and HAWC. These observations could provide a better understanding of the sources of cosmic rays, their propagation, and the magnetic structures in our Galaxy.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Galactic cosmic rays

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 PSR J0633+1746 Psr 06 33 54.153 +17 46 12.91           ~ 1308 0

Query : 2024ApJ...961...87C

Basic data :
PSR J0633+1746 -- Pulsar
Other object types: otypes_help 		gam (2017ApJ,1AGL,...), X (1E,2E,...), Psr (2010ApJS,PSR), UV (2EUVE,EUVE), SN* (SN), SNR (SNR)
ICRS coord. (ep=J2000) : 		06 33 54.153 +17 46 12.91 [ 40 40 90 ] C 1998A&A...329L...1C
FK4 coord. (ep=B1950 eq=1950) : 		06 30 59.193 +17 48 34.28 [ 40 40 90 ]
Gal coord. (ep=J2000) : 		195.133845 +04.265814 [ 40 40 90 ]
Parallaxes (mas): 		4.0 [1.3] D 2007Ap&SS.308..225F
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Identifiers (42) :
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PSR B0633+17 EGR J0633+1750 1FLE J0633+1746 PSR B0630+18
1AGL J0634+1748 1ES 0630+17.8 GeV J0634+1746 PSR J0633+17
2AGL J0634+1749 2EUVE J0633+17.7 2HWC J0635+180 PSR J0633+1746
1CG 195+04 EUVE J0633+17.7 3HWC J0634+180 1RXS J063354.1+174612
2CG 195+04 0FGL J0634.0+1745 INTREF 306 SNR G194.3-13.1
1E 0630+17.8 1FGL J0633.9+1746 1LHAASO J0634+1741u SN 437
1E 0630.9+1748 2FGL J0633.9+1746 MGRO J0632+17 TeV J0632+173
2E 1697 3FGL J0633.9+1746 NAME Geminga SNR 2XMM J063354.2+174614
2E 0631.0+1748 4FGL J0633.9+1746 NAME Geminga [TSA98] J063355.45+174622.49
2EG J0633+1745 1FHL J0633.9+1746 NAME Geminga Pulsar
3EG J0633+1751 3FHL J0633.9+1746 PSR B0630+17

References (1308 between 1850 and 2026) (Total 1308)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Plx : 1   

   

Observing logs
IUE : 1    XMM : 2   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : PSR J0633+1746

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2E 1697 3EG J0633+1751 EUVE J0633+17.7 1RXS J063354.1+174612

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