A Northern Sky Survey for Steady TeV Gamma-Ray Point Sources Using the Tibet Air Shower Array

Abstract

Results on steady TeV $\gamma$-ray point source search using data taken from the Tibet HD (Feb. 1997 -- Sep. 1999) and Tibet III (Nov. 1999 -- Oct. 2001) arrays are presented. From $0^{\circ }$ to $60^{\circ }$ in declination, significant excesses from the well-known steady source Crab Nebula and the high state of the flare type source Markarian 421 are observed. Because the levels of significance from other positions are not sufficiently high, 90% confidence level upper limits on the flux are set assuming different power law spectra. To allow crosschecking, two independently developed analyses are used in this work.

arXiv comment21 pages, 6 figures. accepted by ApJ

References in corpus (12)

• Observation of TeV Gamma Rays from the Crab Nebula with Milagro Using a New Background Rejection Technique
• Time Evolution in Open String Theory
• Multi-TeV Gamma-Ray Flares from Markarian 421 in 2000 and 2001 Observed with the Tibet Air Shower Array
• Observation of Multi-Tev Gamma Rays from the Crab Nebula Using the Tibet Air Shower Array
• A search for TeV gamma-ray emission from SNRs, pulsars and unidentified GeV sources in the Galactic plane in the longitude range between -2 deg and 85 deg
• Detection of Multi-TeV Gamma Rays from Markarian 501 during an Unforeseen Flaring State in 1997 with the Tibet Air Shower Array
• Extragalactic Sources of TeV Gamma Rays: A Summary
• Search for cosmic-ray point sources with KASCADE
• Azimuthal modulation of the event rate of cosmic ray extensive air showers by the geomagnetic field
• TeV Observations of Markarian 501 with the Milagrito Water Cherenkov Detector
• A Survey of the Northern Sky for TeV Point Sources
• Evidence for new unidentified TeV gamma-ray sources from angularly-correlated hot-spots observed by independent TeV gamma-ray sky surveys

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