activity
20002026
most citedThe Hot and Energetic Universe: A White Paper presenting the science theme motivating the Athena+ mission

395 citations · 5.4k across the 130 of their papers we have counts for

collaborators
Showing 2006Show all

6 papers · 1 filter

astro-ph2006★ 86 cited

Chemical Abundances in AGN Environment: X-Ray/UV Campaign on the MRK 279 Outflow

Nahum Arav, Jack R. Gabel, Kirk T. Korista +11

We present the first reliable determination of chemical abundances in an AGN outflow. The abundances are extracted from the deep and simultaneous FUSE and HST/STIS observations of…

astro-ph2006★ 17 cited

X-Ray Emission from Planetary Nebulae Calculated by 1D Spherical Numerical Simulations

Muhammad Akashi, Noam Soker, Ehud Behar +1

We calculate the X-ray emission from both constant and time evolving shocked fast winds blown by the central stars of planetary nebulae (PNs) and compare with observations. Using s…

astro-ph2006★ 11 cited

Hubble Space Telescope Ultraviolet Spectroscopy of Fourteen Low-Redshift Quasars

Rajib Ganguly, Michael S. Brotherton, Nahum Arav +35

We present low-resolution ultraviolet spectra of 14 low redshift (z<0.8) quasars observed with HST/STIS as part of a Snap project to understand the relationship between quasar outf…

astro-ph2006★ 3 cited

High-resolution X-ray Spectroscopy of BD +30 3639

Joel H. Kastner, Young Sam Yu, John Houck +3

We present preliminary results from the first X-ray gratings spectrometer observations of a planetary nebula (PN). We have used the Chandra X-ray Observatory Low Energy Transmissio…

astro-ph2006

A hot transient outflow from eta Carinae

Ehud Behar, Raanan Nordon, Eyal Ben-Bassat +1

eta Carinae is a stellar binary system with a period of 5.54 years. It harbors one of the brightest and most massive stars in our galaxy. This paper presents spectroscopic evidence…

astro-ph2006★ 24 cited

Accretion onto the Companion of Eta Carinae During the Spectroscopic Event: III. the He II 4686 Line

Noam Soker, Ehud Behar

We continue to explore the accretion model of the massive binary system eta Carinae by studying the anomalously high He II 4686 line. The line appears just before periastron and di…