X-ray photoionized plasma diagnostics with Helium-like ions. Application to Warm Absorber-Emitter in Active Galactic Nuclei

By D. Porquet, J. Dubau. 2000

172 citations recorded by the source corpus.

Subfields: Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/f719b50312895aa610b9213b60333cb0d411db30

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. S. Bianchi
2. M. Guainazzi
3. N. Brickhouse
4. Lawrence Livermore National Laboratory
5. D. O. Astronomy
6. S. M. H. C. F. Astrophysics
7. E. Jiménez-Bailón
8. D. Liedahl

In Atomic and Molecular Physics, and Optics

1. N. Schulz
2. N. Brickhouse
3. S. Mathur
4. S. Bianchi
5. M. Guainazzi
6. H. Böhringer
7. J. Bregman
8. M. Gudel

Citations in the corpus

• Evidence for Accretion: High-Resolution X-Ray Spectroscopy of the Classical T Tauri Star TW Hydrae (2001, background): “…on the assumption that the EUV continuum from TW Hya is not driving the He-like lines to their high-density ratios (an intense EUV radiation field can depopulate the metastable level, thereby weakening the forbidden line and enhancing the intercombination line; e.g., Porquet & Dubau 2000).”
• Collisional Plasma Models with APEC/APED: Emission-Line Diagnostics of Hydrogen-like and Helium-like Ions (2001, unknown): “Pure radiative recombination also leads to a larger value of Lyb/Lya in H-like ions, similarly to the well-known effects on line ratios for He-like ions in photoionized plasmas (Porquet & Dubau 2000; Bautista & Kallman 2000).”
• On the origin of soft X-rays in obscured AGN: answers from high-resolution spectroscopy with XMM–Newton (2006, background): “This explains why standard plasma diagnostics (Porquet & Dubau 2000) fail to properly interpret the physical nature of the spectra.”
• Toward a Self-Consistent Model of the Ionized Absorber in NGC 3783 (2003, methodology): “Using the O vii triplet plasma diagnostics by Porquet & Dubau (2000), an upper limit for the electron density in the O vii line formation region of ne < 2.5 × 10 10 cm−3 can be imposed, consistent with the one obtained by Morales et al. (2003, in preparation, ne < 2× 10 10 cm−3).”
• The Compact, Conical, Accretion-Disk Warm Absorber of the Seyfert 1 Galaxy NGC 4051 and Its Implications for IGM-Galaxy Feedback Processes (2007, background): “According to Porquet & Dubau(2000), in photoionized plasma, even at electron densities ∼ 1010 cm−3 the O VII forbidden line should be ≈3 times brighter than the resonance line.”