RADIO AND GAMMA-RAY PULSED EMISSION FROM MILLISECOND PULSARS

	RADIO AND GAMMA-RAY PULSED EMISSION FROM MILLISECOND PULSARS
	Du, Y. J.1,2; Qiao, G. J.3; Chen, D.1
刊名	ASTROPHYSICAL JOURNAL
	2013-01-20
卷号	763 期号:1 页码:29
关键词	acceleration of particles gamma rays: stars pulsars: general pulsars: individual (J0034-0534 radiation mechanisms: non-thermal J0101-6422 J0437-4715)
ISSN号	0004-637X
通讯作者	北京8701信箱
中文摘要	Pulsed γ-ray emission from millisecond pulsars (MSPs) has been detected by the sensitive Fermi space telescope, which sheds light on studies of the emission region and its mechanism. In particular, the specific patterns of radio and γ-ray emission from PSR J0101-6422 challenge the popular pulsar models, e.g., outer gap and two-pole caustic models. Using the three-dimensional annular gap model, we have jointly simulated radio and γ-ray light curves for three representative MSPs (PSR J0034-0534, PSR J0101-6422, and PSR J0437-4715) with distinct radio phase lags, and present the best simulated results for these MSPs, particularly for PSR J0101-6422 with complex radio and γ-ray pulse profiles, and for PSR J0437-4715 with a radio interpulse. We have found that both the γ-ray and radio emission originate from the annular gap region located in only one magnetic pole, and the radio emission region is not primarily lower than the γ-ray region in most cases. In addition, the annular gap model with a small magnetic inclination angle instead of an "orthogonal rotator" can account for the MSPs' radio interpulse with a large phase separation from the main pulse. The annular gap model is a self-consistent model not only for young pulsars but also MSPs, and multi-wavelength light curves can be fundamentally explained using this model.
英文摘要	Pulsed gamma-ray emission from millisecond pulsars (MSPs) has been detected by the sensitive Fermi space telescope, which sheds light on studies of the emission region and its mechanism. In particular, the specific patterns of radio and gamma-ray emission from PSR J0101-6422 challenge the popular pulsar models, e.g., outer gap and two-pole caustic models. Using the three-dimensional annular gap model, we have jointly simulated radio and gamma-ray light curves for three representative MSPs (PSR J0034-0534, PSR J0101-6422, and PSR J0437-4715) with distinct radio phase lags, and present the best simulated results for these MSPs, particularly for PSR J0101-6422 with complex radio and gamma-ray pulse profiles, and for PSR J0437-4715 with a radio interpulse. We have found that both the gamma-ray and radio emission originate from the annular gap region located in only one magnetic pole, and the radio emission region is not primarily lower than the gamma-ray region in most cases. In addition, the annular gap model with a small magnetic inclination angle instead of an "orthogonal rotator" can account for the MSPs' radio interpulse with a large phase separation from the main pulse. The annular gap model is a self-consistent model not only for young pulsars but also MSPs, and multi-wavelength light curves can be fundamentally explained using this model.
学科主题	空间技术
语种	英语
内容类型	期刊论文
源URL	[http://ir.cssar.ac.cn/handle/122/813]
专题	国家空间科学中心_空间技术部
作者单位	1.Chinese Acad Sci, Natl Space Sci Ctr, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 3.Peking Univ, Sch Phys, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Du, Y. J.,Qiao, G. J.,Chen, D.. RADIO AND GAMMA-RAY PULSED EMISSION FROM MILLISECOND PULSARS[J]. ASTROPHYSICAL JOURNAL,2013,763(1):29.
APA	Du, Y. J.,Qiao, G. J.,&Chen, D..(2013).RADIO AND GAMMA-RAY PULSED EMISSION FROM MILLISECOND PULSARS.ASTROPHYSICAL JOURNAL,763(1),29.
MLA	Du, Y. J.,et al."RADIO AND GAMMA-RAY PULSED EMISSION FROM MILLISECOND PULSARS".ASTROPHYSICAL JOURNAL 763.1(2013):29.