Spectral index map of the Crab Nebula in the optical range

15th Russian Youth Conference on Physics and Astronomy

物理学;天文学

Dolindo, N.I.^1 ; Shibanov, Yu.A.^1,2

St. Petersburg State Polytechnical University, Polytechnicheskaya, 29, St.-Petersburg, 195251, Russia^1

Ioffe Physical Technical Institute, Politekhnicheskaya 26, St.-Petersburg, 194021, Russia^2

关键词: Hubble space telescopes;    Optical range;    Physical process;    Pulsar wind nebulae;    Spatial resolution;    Spectral indices;    Spectral slopes;    Synchrotron emission;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/461/1/012013/pdf
DOI  :  10.1088/1742-6596/461/1/012013

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

Information about spatial distribution of the spectral index of the pulsar wind nebulae is important for understanding the structure of the nebulae and physical processes responsible for their formation. We present preliminary results on construction of a detailed index map of the Crab Nebula based on archival optical data obtained with the Hubble Space Telescope. Our map has much better spatial resolution than the previous one obtained by Veron-Cetty and Woltjer in 1993. It allows us to study in great details how the spectral slope of the synchrotron emission of the Crab varies along its torus and jet-like structures.