Zobrazeno 1 - 10
of 299
pro vyhledávání: '"Hickox, Ryan C."'
Coupling between relativistic jets launched by accreting supermassive black holes and the surrounding gaseous media is a vital ingredient in galaxy evolution models. To constrain the environments in which this feedback takes place over cosmic time, w
Externí odkaz:
http://arxiv.org/abs/2407.18744
Autor:
Podjed, Stephanie A., Hickox, Ryan C., Isler, Jedidah C., Böttcher, Markus, Schutte, Hester M.
Publikováno v:
ApJ 968 (2024) 130 (12pp)
Spectropolarimetry is a powerful tool to investigate the central regions of active galactic nuclei (AGNs) as polarization signatures are key to probing magnetic field structure, evolution, and the physics of particle acceleration in jets. Optical lin
Externí odkaz:
http://arxiv.org/abs/2406.17687
JWST is revolutionizing our view of the early Universe by pushing the boundaries of detectable galaxies and black holes in redshift (upward) and mass (downward). The Little Red Dots (LRDs), detected by several surveys at $z > 4$, present a significan
Externí odkaz:
http://arxiv.org/abs/2406.10329
Autor:
Ananna, Tonima Tasnim, Bogdán, Ákos, Kovács, Orsolya E., Natarajan, Priyamvada, Hickox, Ryan C.
The discovery of Little Red Dots (LRDs) -- a population of compact, high-redshift, dust-reddened galaxies -- is one of the most surprising results from JWST. However, the nature of LRDs is still debated: does the near-infrared emission originate from
Externí odkaz:
http://arxiv.org/abs/2404.19010
Autor:
Laloux, Brivael, Georgakakis, Antonis, Alexander, David M., Buchner, Johannes, Andonie, Carolina, Acharya, Nischal, Aird, James, Alonso-Tetilla, Alba V., Bongiorno, Angela, Hickox, Ryan C., Lapi, Andrea, Musiimenta, Blessing, Almeida, Cristina Ramos, Vellforth, Carolin, Shankar, Francesco
We adopt a Bayesian X-ray spectral approach to investigate the accretion properties of unobscured ($20<\log(N_{\rm H}/{\rm cm}^{-2}<22$) and obscured ($22< \log(N_{\rm H}/{\rm cm}^{-2}<24$) active galactic nuclei (AGN) to shed light on the orientatio
Externí odkaz:
http://arxiv.org/abs/2403.07109
Autor:
Purohit, Rujuta A., Fragione, Giacomo, Rasio, Frederic A., Petter, Grayson C., Hickox, Ryan C.
Intermediate-mass black holes (IMBHs) are believed to be the missing link between the supermassive black holes (BHs) found at the centers of massive galaxies and BHs formed through stellar core collapse. One of the proposed mechanisms for their forma
Externí odkaz:
http://arxiv.org/abs/2401.06731
Autor:
Pfeifle, Ryan W., Boorman, Peter G., Weaver, Kimberly A., Buchner, Johannes, Civano, Francesca, Madsen, Kristin, Stern, Daniel, Torres-Albà, Núria, Nardini, Emanuele, Ricci, Claudio, Marchesi, Stefano, Ballantyne, D. R., Sicilian, Dominic, Chen, Chien-Ting, Kammoun, Elias, Hickox, Ryan C., García, Javier A., Mallick, Labani
A fundamental goal of modern-day astrophysics is to understand the connection between supermassive black hole (SMBH) growth and galaxy evolution. Merging galaxies offer one of the most dramatic channels for galaxy evolution known, capable of driving
Externí odkaz:
http://arxiv.org/abs/2311.05154
Autor:
Coil, Alison L., Perrotta, Serena, Rupke, David S. N., Lochhaas, Cassandra, Tremonti, Christy A., Diamond-Stanic, Aleks, Fielding, Drummond, Geach, James, Hickox, Ryan C., Moustakas, John, Rudnick, Gregory H., Sell, Paul, Whalen, Kelly E.
A new class of extragalactic astronomical sources discovered in 2021, named Odd Radio Circles (ORCs, Norris et al. 2021), are large rings of faint, diffuse radio continuum emission spanning ~1 arcminute on the sky. Galaxies at the centers of several
Externí odkaz:
http://arxiv.org/abs/2310.15162
Autor:
Andonie, Carolina, Alexander, David M., Greenwell, Claire, Puglisi, Annagrazia, Laloux, Brivael, Alonso-Tetilla, Alba V., Rivera, Gabriela Calistro, Harrison, Chris, Hickox, Ryan C., Kaasinen, Melanie, Lapi, Andrea, López, Iván E., Petter, Grayson, Almeida, Cristina Ramos, Rosario, David J., Shankar, Francesco, Villforth, Carolin
In the standard quasar model, the accretion disk obscuration is due to the canonical dusty torus. Here, we argue that a substantial part of the quasar obscuration can come from the interstellar medium (ISM) when the quasars are embedded in compact st
Externí odkaz:
http://arxiv.org/abs/2310.02330
Autor:
Hviding, Raphael E., Hickox, Ryan C., Hainline, Kevin N., Carroll, Christopher M., DiPompeo, Michael A., Yan, Wei, Jones, Mackenzie L.
We present the results of an optical spectroscopic survey of 46 heavily obscured quasar candidates. Objects are selected using their mid-infrared (mid-IR) colours and magnitudes from the Wide-Field Infrared Survey Explorer (WISE) anzd their optical m
Externí odkaz:
http://hdl.handle.net/10150/627140
http://arizona.openrepository.com/arizona/handle/10150/627140
http://arizona.openrepository.com/arizona/handle/10150/627140