TY - JOUR
T1 - Hubble space telescope detection of the double pulsar system J0737-3039 in the far-ultraviolet
AU - Durant, Martin
AU - Kargaltsev, Oleg
AU - Pavlov, George G.
PY - 2014/3/1
Y1 - 2014/3/1
N2 - We report on detection of the double pulsar system J0737-3039 in the far-UV with the Advanced Camera for Surveys/Solar-blind Channel detector aboard Hubble Space Telescope. We measured the energy flux F = (4.6 ± 1.0) × 10-17 erg cm-2 s-1 in the 1250-1550 Å band, which corresponds to the extinction-corrected luminosity L 1.5 × 1028 erg s-1 for the distance d = 1.1 kpc and a plausible reddening E(B-V) = 0.1. If the detected emission comes from the entire surface of one of the neutron stars with a 13 km radius, the surface blackbody temperature is in the range T ≃ (2-5) × 105 K for a reasonable range of interstellar extinction. Such a temperature requires an internal heating mechanism to operate in old neutron stars, or, less likely, it might be explained by heating of the surface of the less energetic Pulsar B by the relativistic wind of Pulsar A. If the far-ultraviolet emission is non-thermal (e.g., produced in the magnetosphere of Pulsar A), its spectrum exhibits a break between the UV and X-rays.
AB - We report on detection of the double pulsar system J0737-3039 in the far-UV with the Advanced Camera for Surveys/Solar-blind Channel detector aboard Hubble Space Telescope. We measured the energy flux F = (4.6 ± 1.0) × 10-17 erg cm-2 s-1 in the 1250-1550 Å band, which corresponds to the extinction-corrected luminosity L 1.5 × 1028 erg s-1 for the distance d = 1.1 kpc and a plausible reddening E(B-V) = 0.1. If the detected emission comes from the entire surface of one of the neutron stars with a 13 km radius, the surface blackbody temperature is in the range T ≃ (2-5) × 105 K for a reasonable range of interstellar extinction. Such a temperature requires an internal heating mechanism to operate in old neutron stars, or, less likely, it might be explained by heating of the surface of the less energetic Pulsar B by the relativistic wind of Pulsar A. If the far-ultraviolet emission is non-thermal (e.g., produced in the magnetosphere of Pulsar A), its spectrum exhibits a break between the UV and X-rays.
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U2 - 10.1088/2041-8205/783/1/L22
DO - 10.1088/2041-8205/783/1/L22
M3 - Article
AN - SCOPUS:84895132624
SN - 2041-8205
VL - 783
JO - Astrophysical Journal Letters
JF - Astrophysical Journal Letters
IS - 1
M1 - L22
ER -