2011/02/02 by C. Mueller, Carmen Mueller, N. Akhter +21
Physics and Astronomy · #Astrophysics #Astrophysics and Cosmic Phenomena #Energy (signal processing) #Gamma-ray bursts and supernovae #Physics #Quantum mechanics #Radio Astronomy Observations and Technology #astro-ph.HE #hep-ex
paper · pdf · doi:10.1016/j.astropartphys.2011.01.010
published as Astropart.Phys.34:674-678,2011
openalex publication_date 2011/02/02 · arxiv created 2011/04/14 · arxiv updated 2011/07/28 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present results of very-high-energy gamma-ray observations (E > 160 GeV) of two high-frequency-peaked BL Lac (HBL) objects, 1ES 1218+304 and H 1426+428, with the Solar Tower Atmospheric Cherenkov Effect Experiment (STACEE). Both sources are very-high-energy gamma-ray emitters above 100 GeV, detected using ground-based Cherenkov telescopes. STACEE observations of 1ES 1218+304 and H 1426+428 did not produce detections; we present 99% CL flux upper limits for both sources, assuming spectral indices measured mostly at higher energies.