Publication details for Prof David AlexanderLansbury, George B., Jarvis, Miranda E., Harrison, Chris M., Alexander, David M., Moro, Agnese Del, Edge, Alastair C., Mullaney, James R. & Thomson, Alasdair P. (2018). Storm in a Teacup: X-Ray View of an Obscured Quasar and Superbubble. The Astrophysical Journal Letters 856(1): L1.
- Publication type: Journal Article
- ISSN/ISBN: 2041-8213 (electronic)
- DOI: 10.3847/2041-8213/aab357
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Author(s) from Durham
We present the X-ray properties of the "Teacup AGN" (SDSS J1430+1339), a z = 0.085 type 2 quasar that is interacting dramatically with its host galaxy. Spectral modeling of the central quasar reveals a powerful, highly obscured active galactic nucleus (AGN) with a column density of N H = (4.2–6.5) × 1023 cm−2 and an intrinsic luminosity of L 2–10 keV = (0.8–1.4) × 1044 erg s−1. The current high bolometric luminosity inferred (L bol ≈1045–1046 erg s−1) has ramifications for previous interpretations of the Teacup as a fading/dying quasar. High-resolution Chandra imaging data reveal a ≈10 kpc loop of X-ray emission, cospatial with the "eastern bubble" previously identified in luminous radio and ionized gas (e.g., [O iii] line) emission. The X-ray emission from this structure is in good agreement with a shocked thermal gas, with T = (4–8) × 106 K, and there is evidence for an additional hot component with T gsim 3 × 107 K. Although the Teacup is a radiatively dominated AGN, the estimated ratio between the bubble power and the X-ray luminosity is in remarkable agreement with observations of ellipticals, groups, and clusters of galaxies undergoing AGN feedback.