TY - JOUR
T1 - Observations of one young and three middle-aged? -Ray pulsars with the Gran Telescopio Canarias
AU - Mignani, R. P.
AU - Testa, V.
AU - Rea, N.
AU - Marelli, M.
AU - Salvetti, D.
AU - Torres, D. F.
AU - Wilhelmi, E. De Oña
PY - 2018/7/21
Y1 - 2018/7/21
N2 - © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. We used the 10.4 m Gran Telescopio Canarias to search for the optical counterparts to four isolated γ -ray pulsars, all detected in the X-rays by either XMM-Newton or Chandra but not yet in the optical. Three of them are middle-aged pulsars - PSR J1846+0919 (0.36Myr), PSR J2055+2539 (1.2 Myr), PSR J2043+2740 (1.2 Myr) - and one, PSR J1907+0602, is a young pulsar (19.5 kyr). For both PSR J1907+0602 and PSR J2055+2539 we found one object close to the pulsar position. However, in both cases such an object cannot be a viable candidate counterpart to the pulsar. For PSR J1907+0602, because it would imply an anomalously red spectrum for the pulsar and for PSR J2055+2539 because the pulsar would be unrealistically bright (r' = 20.34 ± 0.04) for the assumed distance and interstellar extinction. For PSR J1846+0919, we found no object sufficiently close to the expected position to claim a possible association, whereas for PSR J2043+2740 we confirm our previous findings that the object nearest to the pulsar position is an unrelated field star. We used our brightness limits (g' ≈ 27), the first obtained with a large-aperture telescope for both PSR J1846+0919 and PSR J2055+2539, to constrain the optical emission properties of these pulsars and investigate the presence of spectral turnovers at low energies in their multiwavelength spectra.
AB - © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. We used the 10.4 m Gran Telescopio Canarias to search for the optical counterparts to four isolated γ -ray pulsars, all detected in the X-rays by either XMM-Newton or Chandra but not yet in the optical. Three of them are middle-aged pulsars - PSR J1846+0919 (0.36Myr), PSR J2055+2539 (1.2 Myr), PSR J2043+2740 (1.2 Myr) - and one, PSR J1907+0602, is a young pulsar (19.5 kyr). For both PSR J1907+0602 and PSR J2055+2539 we found one object close to the pulsar position. However, in both cases such an object cannot be a viable candidate counterpart to the pulsar. For PSR J1907+0602, because it would imply an anomalously red spectrum for the pulsar and for PSR J2055+2539 because the pulsar would be unrealistically bright (r' = 20.34 ± 0.04) for the assumed distance and interstellar extinction. For PSR J1846+0919, we found no object sufficiently close to the expected position to claim a possible association, whereas for PSR J2043+2740 we confirm our previous findings that the object nearest to the pulsar position is an unrelated field star. We used our brightness limits (g' ≈ 27), the first obtained with a large-aperture telescope for both PSR J1846+0919 and PSR J2055+2539, to constrain the optical emission properties of these pulsars and investigate the presence of spectral turnovers at low energies in their multiwavelength spectra.
KW - PSR J1907+0602
KW - PSR J2043+2740
KW - PSR J2055+2539
KW - Pulsars: Individual: PSR J1846+0919
KW - Stars: Neutron
U2 - 10.1093/mnras/sty1020
DO - 10.1093/mnras/sty1020
M3 - Article
VL - 478
SP - 332
EP - 341
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
SN - 0035-8711
IS - 1
ER -