Is There a Link Between Emission-Line Widths and X-Ray Continuum Slopes in Narrow Line Seyfert 1 Galaxies? |
| |
摘 要: | 1 IntroductionTheNarrowLineSeyfert 1Galaxies (NLSI ,Osterbrock&Pogge 1 985 )areapeculiarsub classofactivegalacticnuclei (AGNs) ,thedescriptivecriteria (Goodrich 1 989)usedtodefineNLS1are :( 1 )theBalmerlinesareonlyslightlybroaderthantheforbiddenlinessuchas〔OⅢ〕 ,〔NⅡ〕 ,and…
|
本文献已被 CNKI 等数据库收录! |
|