Analysis of Double-Peaked Profile Lines in 3C390.3
نویسندگان
چکیده
منابع مشابه
Long-term Profile Variability of Double Peaked Emission Lines in Active Galactic Nuclei
We present up to two decades of spectroscopic monitoring of the double-peaked broad Hα emission lines of seven broad-line radio galaxies. These extremely broad, double-peaked lines are successfully modeled by emission from gas in the outer accretion disk, and their profiles vary on timescales of months to years. This variability is a valuable probe for understanding the structure and dynamics o...
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اندیشمندان و صاحب نظران علوم اجتماعی بر این باورند که مرحله تازه ای در تاریخ جوامع بشری اغاز شده است. ویژگیهای این جامعه نو را می توان پدیده هایی از جمله اقتصاد اطلاعاتی جهانی ، هندسه متغیر شبکه ای، فرهنگ مجاز واقعی ، توسعه حیرت انگیز فناوری های دیجیتال، خدمات پیوسته و نیز فشردگی زمان و مکان برشمرد. از سوی دیگر قدرت به عنوان موضوع اصلی علم سیاست جایگاه مهمی در روابط انسانی دارد، قدرت و بازتولید...
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Using an empirical relation between the broad line region size and optical continuum luminosity, we estimated the black hole mass and accretion rate for 135 AGNs with double-peaked broad emission lines in two samples, one from the SDSS and the other from a survey of radio-loud broad emission line AGNs. With black hole masses in a range from 3×10M⊙ to 5×10 M⊙, these AGNs have the dimensionless a...
متن کاملThe Ultraviolet Spectra of Active Galaxies With Double-Peaked Emission Lines
We present the results of UV spectroscopy of AGNs with double-peaked Balmer emission lines. In 2/3 of the objects, the far-UV resonance lines are strong, with single-peaked profiles resembling those of Seyfert galaxies. The Mg ii line is the only UV line with a doublepeaked profile. In the remaining objects, the far-UV resonance lines are relatively weak but still single-peaked. The latter grou...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 2001
ISSN: 0074-1809
DOI: 10.1017/s0074180900220482