天文研究与技术－国家天文台台刊
天文研究與技術－國傢天文檯檯刊
천문연구여기술－국가천문태태간
ASTRONOMICAL RESEARCH & TECHNOLOGY-PUBLICATIONS OF NATIONAL ASTRONOMICAL OBSERVATORIES OF CHINA
2007年
1期
11-20
,共10页
活动星系核%射电源%平谱射电类星体%BLLac星体
活動星繫覈%射電源%平譜射電類星體%BLLac星體
활동성계핵%사전원%평보사전류성체%BLLac성체
AGN%radio sources%FSRQs%BL Lacertae objects
文章研究了162个射电源,其中包括了47个BL Lacs, 21个galaxies, 94个平谱射电类星体 ( FSRQs ), 这些源是通过Michigan大学的26m的射电望远镜观测的.大多数源都包含了3个波段的观测数据:4.8GHz, 8GHz和14.5GHz. 文中计算了3个子类的平均的流量密度,并且得到了相应的谱指数(αwei), αBL=0.08±0.28, αGAL=-0.91±0.32, αFSRQ=-0.14±0.4. 同时也讨论了这些源的射电性质,其中包含了谱指数,流量密度和红移之间的关系,流量密度和谱指数之间的关系.
文章研究瞭162箇射電源,其中包括瞭47箇BL Lacs, 21箇galaxies, 94箇平譜射電類星體 ( FSRQs ), 這些源是通過Michigan大學的26m的射電望遠鏡觀測的.大多數源都包含瞭3箇波段的觀測數據:4.8GHz, 8GHz和14.5GHz. 文中計算瞭3箇子類的平均的流量密度,併且得到瞭相應的譜指數(αwei), αBL=0.08±0.28, αGAL=-0.91±0.32, αFSRQ=-0.14±0.4. 同時也討論瞭這些源的射電性質,其中包含瞭譜指數,流量密度和紅移之間的關繫,流量密度和譜指數之間的關繫.
문장연구료162개사전원,기중포괄료47개BL Lacs, 21개galaxies, 94개평보사전류성체 ( FSRQs ), 저사원시통과Michigan대학적26m적사전망원경관측적.대다수원도포함료3개파단적관측수거:4.8GHz, 8GHz화14.5GHz. 문중계산료3개자류적평균적류량밀도,병차득도료상응적보지수(αwei), αBL=0.08±0.28, αGAL=-0.91±0.32, αFSRQ=-0.14±0.4. 동시야토론료저사원적사전성질,기중포함료보지수,류량밀도화홍이지간적관계,류량밀도화보지수지간적관계.
In this paper, 162 radio sources, including 47 BL Lacs,21 galaxies and 94 flat spectral radio quasars (FSRQs) are studied.All sources were extracted from the University of Michigan Radio Astronomy Observatory (UMRAO) database observed by the 26-meter Michigan Radio Telescope. Most of the sources were observed at three bands: 4.8GHz, 8GHz and 14.5GHz. The average flux densities of the three subclasses are calculated and the weighted average spectral index (αwei), αBL=0.08±0.28, αGAL=-0.91±0.32, αFSRQ=-0.14±0.4 are obtained. Some radio properties are discussed in this paper, including the spectral index, the relation between the flux and the redshift, the relation between the flux and the spectral index.
