Optical observations of PSR J2021+3651 with the GTC

[摘要] We analyzed first optical observations of 17 kyr-old PSR J2021+3651 and its pulsar wind nebula obtained with the 10.4-m Gran Telescopio Canarias (GTC) telescope in the Sloan r' band. In addition, we reanalyzed archival X-ray data obtained with Chandra. The pulsar and the nebula were not detected in the optical down to 27.20 and 24.85 magnitude 3σ limits, respectively. Using the optical and X-ray data we conclude that PSR J2021+3651, like the Vela pulsar, is a very inefficient nonthermal emitter in the optical and X-rays, while its gamma-ray efficiency is consistent with an average efficiency for all gamma-ray pulsars of similar ages.

[发布机构] St. Petersburg Polytechnic University, Politekhnicheskaya 29, St. Petersburg; 195251, Russia^1;Ioffe Institute, Politekhnicheskaya 26, St. Petersburg; 194021, Russia^2;Department of Medical Biophysics, Sunnybrook Hospital M6 623, 2075 Bayview Avenue, Toronto; M4N 3M5, Canada^3;Department of Physics, George Washington University, Washington; DC; 20052, United States^4;Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park; PA; 16802, United States^5;Instituto de Astrofisica de Canarias, La Laguna, Tenerife; E-38205, Spain^6;Universidad de la Laguna, Dept. Astrofisica, La Laguna, Tenerife; E-38206, Spain^7

[效力级别] 天文学 [学科分类] 天文学(综合)

[关键词] Average efficiencies;Chandra;Gran telescopio canarias;Nonthermal;Optical observations;Pulsar wind nebula;X ray data