Search for Near-Infrared Pulsation of the Anomalous X-ray Pulsar 4U 0142+61 TeX Export

@article{citeulike:3338399, abstract = {We have searched for pulsation of the anomalous X-ray pulsar (AXP) 4U 0142+61 in the K' band (\$\lambda\_{\rm eff} = 2.11\$ \$\mu\$m) using the fast-readout mode of IRCS at the Subaru 8.2-m telescope. We found no significant signal at the pulse frequency expected by the precise ephemeris obtained by the X-ray monitoring observation with RXTE. Nonetheless, we obtained a best upper limit of 17\% (90\% C.L.) for the root-mean-square pulse fraction in the K' band. Combined with i' band pulsation (Dhillon et al. 2005), the slope of the pulsed component (\$F\_\nu \propto \nu^\alpha\$) was constrained to \$\alpha \> -0.87\$ (90\% C.L.) for an interstellar extinction of \$A\_{V} = 3.5\$.}, archivePrefix = {arXiv}, author = {Morii, Mikio and Kobayashi, Naoto and Kawai, Nobuyuki and Terada, Hiroshi and Tanaka, Yasuyuki T. and Kitamoto, Shunji and Shibazaki, Noriaki}, citeulike-article-id = {3338399}, citeulike-linkout-0 = {http://arxiv.org/abs/0809.2638}, citeulike-linkout-1 = {http://arxiv.org/pdf/0809.2638}, day = {16}, eprint = {0809.2638}, keywords = {0142, infrared}, month = {Sep}, posted-at = {2008-09-26 00:41:38}, priority = {2}, title = {Search for Near-Infrared Pulsation of the Anomalous X-ray Pulsar 4U 0142+61}, url = {http://arxiv.org/abs/0809.2638}, year = {2008} }

TY - JOUR ID - citeulike:3338399 L3 - citeulike-article-id:3338399 N2 - We have searched for pulsation of the anomalous X-ray pulsar (AXP) 4U 0142+61 in the K' band ($\lambda_{\rm eff} = 2.11$ $\mu$m) using the fast-readout mode of IRCS at the Subaru 8.2-m telescope. We found no significant signal at the pulse frequency expected by the precise ephemeris obtained by the X-ray monitoring observation with RXTE. Nonetheless, we obtained a best upper limit of 17% (90% C.L.) for the root-mean-square pulse fraction in the K' band. Combined with i' band pulsation (Dhillon et al. 2005), the slope of the pulsed component ($F_\nu \propto \nu^\alpha$) was constrained to $\alpha > -0.87$ (90% C.L.) for an interstellar extinction of $A_{V} = 3.5$. TI - Search for Near-Infrared Pulsation of the Anomalous X-ray Pulsar 4U 0142+61 KW - 0142 KW - infrared AU - Morii, Mikio AU - Kobayashi, Naoto AU - Kawai, Nobuyuki AU - Terada, Hiroshi AU - Tanaka, Yasuyuki AU - Kitamoto, Shunji AU - Shibazaki, Noriaki PY - 2008/Sep/16/ UR - http://arxiv.org/abs/0809.2638 ER -