TY - JOUR AU - Rosalba Perna AU - Wynn Ho AU - Licia Verde AU - M. van Adelsberg AU - Raul Jimenez BT - The Astrophysical Journal DA - 2012-04 DO - 10.1088/0004-637X/748/2/116 PY - 2012 EP - 116 T2 - The Astrophysical Journal TI - Signatures of Photon-Axion Conversion in the Thermal Spectra and Polarization of Neutron Stars VL - 748 ER -