The X-rays wind connection in PG 2112+059
نویسندگان
چکیده
We study the connection between X-ray and UV properties of broad absorption line (BAL) wind in highly variable quasar PG 2112+059 by comparing Chandra-ACIS data with contemporaneous HST/STIS spectra three different epochs. observe a correlation whereby an increase equivalent-widths (EWs) BALs is accompanied redder spectrum. The growth EWs also significant dimming soft emission (<2 keV), consistent increased absorption. Variations hard (>2 keV) are only minor spectral variations UV-BALs do not show changes EW BALs. These trends suggest wind-shield scenario where outflow inclination respect to sight decreasing and/or mass increasing. elevate covering fraction column densities likely nearly density shield.
منابع مشابه
The Seyfert-starburst Connection in X-rays. I. the Data
We analyze X-ray spectra and images of a sample of Seyfert 2 galaxies that unambiguously contain starbursts, based on their optical and UV characteristics. Although all sample members contain active galactic nuclei (AGNs), supermassive black holes or other related processes at the galactic centers alone cannot account for the total X-ray emission in all instances. Eleven of the twelve observed ...
متن کاملX-rays from the radio-quiet quasar PG 1407+265: relativistic jet or accretion disc emission?
We present two XMM-Newton observations of the luminous (Lx > 10 erg s ), radioquiet quasar, PG 1407+265, separated by eleven months. The data indicate two distinct states: a highly variable, bright state (first epoch); and a quiescent, low-flux one (second epoch). During the low-flux state the spectrum is consistent with a single, unabsorbed power law. However, during the brighter state a highl...
متن کاملThe Seyfert-starburst Connection in X-rays. Ii. Results and Implications
We present the results of X-ray imaging and spectroscopic analysis of a sample of Seyfert 2 galaxies that contain starbursts, based on their optical and UV characteristics. These composite galaxies exhibit extended, soft, thermal X-ray emission, which we attribute to their starburst components. Comparing their X-ray and far-infrared properties with ordinary Seyfert and starburst galaxies, we id...
متن کاملDiagnostic Utility of Chest X-rays in Neonatal Respiratory Distress: Determining the Sensitivity and Specificity
Background: Chest radiography is one of the most usual diagnostic tools for respiratory distress. Objective: The purpose of this study is to assess the specificity, sensitivity and clinical value of chest radiography of neonates with respiratory distress.Patients and Methods: A descriptive- analytical study was conducted on 102 neonates that were in neonatal intensive care unit of Imam Reza and...
متن کاملFolding ion rays in comet C / 2004 Q 2 ( Machholz ) and the connection with the solar wind ?
Aims. The appearance of folding ion rays in cometary comae is still not very well understood, so our aim is to gain more insight into the role of the local solar wind in the formation of these structures. Methods. Comet C/2004 Q2 (Machholz) was intensively monitored during its closest approach to Earth (January 2005) with the CCD camera Merope mounted on the Flemish 1.2m Mercator telescope, in ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2021
ISSN: ['0035-8711', '1365-8711', '1365-2966']
DOI: https://doi.org/10.1093/mnras/stab1706