The Highest Resolution X-ray View of the Nuclear Region of NGC 4151

Junfeng Wang, Margarita Karovska, Martin Elvis, Guido Risaliti, A. Zezas, Carole Mundell

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We report high resolution imaging of the nucleus of the Seyfert 1 galaxy NGC 4151 obtained with a 50 ks Chandra HRC observation. The HRC image resolves the emission on spatial scales of 0.5 arcsec (30 pc), showing an extended X-ray morphology overall consistent with the narrow line region seen in optical line emission. Removal of the bright point-like nuclear source and image deconvolution technique both reveal X-ray enhancements that closely match the substructures seen in the HST [OIII] image and prominent knots in the radio jet. We find that most of the NLR clouds in NGC 4151 have [OIII] to soft X-ray ratio consistent with the values observed in NLRs of some Seyfert 2 galaxies, which indicates a uniform ionization parameter even at large radii and a density dependence ∝ r^{-2} as expected in the disk wind scenario. We examine various X-ray emission mechanisms of the radio jet and consider thermal emission from interaction between radio outflow and the NLR clouds the most probable origin for the X-ray emission associated with the jet.
Original languageEnglish
Title of host publicationChandra's First Decade of Discovery
Subtitle of host publicationProceedings of the conference held 22-25 September, 2009 in Boston, MA
EditorsS. Wolk, A. Fruscione, D. Swartz
Publication statusPublished - Sep 2009

Fingerprint

high resolution
x rays
galaxies
thermal emission
substructures
ionization
nuclei
radii
augmentation
interactions

Cite this

Wang, J., Karovska, M., Elvis, M., Risaliti, G., Zezas, A., & Mundell, C. (2009). The Highest Resolution X-ray View of the Nuclear Region of NGC 4151. In S. Wolk, A. Fruscione, & D. Swartz (Eds.), Chandra's First Decade of Discovery: Proceedings of the conference held 22-25 September, 2009 in Boston, MA [204]

The Highest Resolution X-ray View of the Nuclear Region of NGC 4151. / Wang, Junfeng; Karovska, Margarita; Elvis, Martin; Risaliti, Guido; Zezas, A.; Mundell, Carole.

Chandra's First Decade of Discovery: Proceedings of the conference held 22-25 September, 2009 in Boston, MA. ed. / S. Wolk; A. Fruscione; D. Swartz. 2009. 204.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Wang, J, Karovska, M, Elvis, M, Risaliti, G, Zezas, A & Mundell, C 2009, The Highest Resolution X-ray View of the Nuclear Region of NGC 4151. in S Wolk, A Fruscione & D Swartz (eds), Chandra's First Decade of Discovery: Proceedings of the conference held 22-25 September, 2009 in Boston, MA., 204.
Wang J, Karovska M, Elvis M, Risaliti G, Zezas A, Mundell C. The Highest Resolution X-ray View of the Nuclear Region of NGC 4151. In Wolk S, Fruscione A, Swartz D, editors, Chandra's First Decade of Discovery: Proceedings of the conference held 22-25 September, 2009 in Boston, MA. 2009. 204
Wang, Junfeng ; Karovska, Margarita ; Elvis, Martin ; Risaliti, Guido ; Zezas, A. ; Mundell, Carole. / The Highest Resolution X-ray View of the Nuclear Region of NGC 4151. Chandra's First Decade of Discovery: Proceedings of the conference held 22-25 September, 2009 in Boston, MA. editor / S. Wolk ; A. Fruscione ; D. Swartz. 2009.
@inproceedings{196299b374924234b69dcdf172ddac2b,
title = "The Highest Resolution X-ray View of the Nuclear Region of NGC 4151",
abstract = "We report high resolution imaging of the nucleus of the Seyfert 1 galaxy NGC 4151 obtained with a 50 ks Chandra HRC observation. The HRC image resolves the emission on spatial scales of 0.5 arcsec (30 pc), showing an extended X-ray morphology overall consistent with the narrow line region seen in optical line emission. Removal of the bright point-like nuclear source and image deconvolution technique both reveal X-ray enhancements that closely match the substructures seen in the HST [OIII] image and prominent knots in the radio jet. We find that most of the NLR clouds in NGC 4151 have [OIII] to soft X-ray ratio consistent with the values observed in NLRs of some Seyfert 2 galaxies, which indicates a uniform ionization parameter even at large radii and a density dependence ∝ r^{-2} as expected in the disk wind scenario. We examine various X-ray emission mechanisms of the radio jet and consider thermal emission from interaction between radio outflow and the NLR clouds the most probable origin for the X-ray emission associated with the jet.",
author = "Junfeng Wang and Margarita Karovska and Martin Elvis and Guido Risaliti and A. Zezas and Carole Mundell",
year = "2009",
month = "9",
language = "English",
editor = "S. Wolk and A. Fruscione and D. Swartz",
booktitle = "Chandra's First Decade of Discovery",

}

TY - GEN

T1 - The Highest Resolution X-ray View of the Nuclear Region of NGC 4151

AU - Wang, Junfeng

AU - Karovska, Margarita

AU - Elvis, Martin

AU - Risaliti, Guido

AU - Zezas, A.

AU - Mundell, Carole

PY - 2009/9

Y1 - 2009/9

N2 - We report high resolution imaging of the nucleus of the Seyfert 1 galaxy NGC 4151 obtained with a 50 ks Chandra HRC observation. The HRC image resolves the emission on spatial scales of 0.5 arcsec (30 pc), showing an extended X-ray morphology overall consistent with the narrow line region seen in optical line emission. Removal of the bright point-like nuclear source and image deconvolution technique both reveal X-ray enhancements that closely match the substructures seen in the HST [OIII] image and prominent knots in the radio jet. We find that most of the NLR clouds in NGC 4151 have [OIII] to soft X-ray ratio consistent with the values observed in NLRs of some Seyfert 2 galaxies, which indicates a uniform ionization parameter even at large radii and a density dependence ∝ r^{-2} as expected in the disk wind scenario. We examine various X-ray emission mechanisms of the radio jet and consider thermal emission from interaction between radio outflow and the NLR clouds the most probable origin for the X-ray emission associated with the jet.

AB - We report high resolution imaging of the nucleus of the Seyfert 1 galaxy NGC 4151 obtained with a 50 ks Chandra HRC observation. The HRC image resolves the emission on spatial scales of 0.5 arcsec (30 pc), showing an extended X-ray morphology overall consistent with the narrow line region seen in optical line emission. Removal of the bright point-like nuclear source and image deconvolution technique both reveal X-ray enhancements that closely match the substructures seen in the HST [OIII] image and prominent knots in the radio jet. We find that most of the NLR clouds in NGC 4151 have [OIII] to soft X-ray ratio consistent with the values observed in NLRs of some Seyfert 2 galaxies, which indicates a uniform ionization parameter even at large radii and a density dependence ∝ r^{-2} as expected in the disk wind scenario. We examine various X-ray emission mechanisms of the radio jet and consider thermal emission from interaction between radio outflow and the NLR clouds the most probable origin for the X-ray emission associated with the jet.

M3 - Conference contribution

BT - Chandra's First Decade of Discovery

A2 - Wolk, S.

A2 - Fruscione, A.

A2 - Swartz, D.

ER -