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Title: Searching for debris disks around seven radio pulsars

We report on our searches for debris disks around seven relatively nearby radio pulsars, which are isolated sources that were carefully selected as targets on the basis of our deep K{sub s} -band imaging survey. The K{sub s} images obtained with the 6.5 m Baade Magellan Telescope at Las Campanas Observatory are analyzed together with the Spitzer/IRAC images at 4.5 and 8.0 μm and the WISE images at 3.4, 4.6, 12, and 22 μm. No infrared counterparts of these pulsars are found, with flux upper limits of ∼μJy at near-infrared (λ < 10 μm) and ∼10-1000 μJy at mid-infrared wavelengths (λ > 10 μm). The results of this search are discussed in terms of the efficiency of converting the pulsar spin-down energy to thermal energy and X-ray heating of debris disks, with a comparison made of the two magnetars 4U 0142+61 and 1E 2259+586, which are suggested to harbor a debris disk.
Authors:
;  [1] ;  [2] ;  [3] ;  [4]
  1. Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030 (China)
  2. Department of Physics, The University of Hong Kong, Pokfulam Road (Hong Kong)
  3. Department of Physics and Astronomy, University of Missouri, Columbia, MO 65211 (United States)
  4. Physics Department, University of WisconsinMilwaukee, Milwaukee, WI 53211 (United States)
Publication Date:
OSTI Identifier:
22370583
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 793; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COMPARATIVE EVALUATIONS; EFFICIENCY; HEATING; IMAGES; NEUTRON STARS; NEUTRONS; PULSARS; SPIN; STARS; TELESCOPES; X RADIATION