2010/02/12 by The Fermi LAT Collaboration, A. A. Abdo, Pulsar Timing Consortium +99 · 58 citations
Physics and Astronomy · #Astronomy #Astrophysics #Astrophysics and Cosmic Phenomena #Fermi Gamma-ray Space Telescope #Gamma ray #Gamma-ray bursts and supernovae #Light curve #Millisecond pulsar #Optics #Photon #Physics #Pulsar #Pulsars and Gravitational Waves Research #Radio telescope #Telescope #astro-ph.GA #astro-ph.HE
paper · pdf · doi:10.1088/0004-637x/712/2/957
published in The Astrophysical Journal 712(2), 957-963 (IOP Publishing) · 20 pages, 3 figures, 2 tables. Accepted for publication in ApJ
arxiv created 2010/02/12 · openalex publication_date 2010/03/09 · arxiv updated 2015/05/18 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Millisecond pulsars (MSPs) have been firmly established as a class of γ-ray emitters via the detection of pulsations above 0.1 GeV from eight MSPs by the Fermi Large Area Telescope (LAT). Using 13 months of LAT data, significant γ-ray pulsations at the radio period have been detected from the MSP PSR J0034−0534, making it the ninth clear MSP detection by the LAT. The γ-ray light curve shows two peaks separated by 0.274 ± 0.015 in phase which are very nearly aligned with the radio peaks, a phenomenon seen only in the Crab pulsar until now. The ⩾0.1 GeV spectrum of this pulsar is well fit by an exponentially cutoff power law with a cutoff energy of 1.8 ± 0.6 ± 0.1 GeV and a photon index of 1.5 ± 0.2 ± 0.1, first errors are statistical and second are systematic. The near-alignment of the radio and γ-ray peaks strongly suggests that the radio and γ-ray emission regions are co-located and both are the result of caustic formation.