Zobrazeno 1 - 10
of 83
pro vyhledávání: '"Foord, Adi"'
Autor:
Barrera, Natalia Porraz, Lopez, Sebastian, Lopez, Laura A., Foord, Adi, Nguyen, Dustin D., Thompson, Todd A., Mathur, Smita, Bolatto, Alberto D.
We analyze 330 ks of {\it Chandra} X-ray imaging and spectra of the nearby, edge-on starburst and Seyfert Type 2 galaxy NGC 4945 to measure the hot gas properties along the galactic outflows. We extract and model spectra from 15 regions extending fro
Externí odkaz:
http://arxiv.org/abs/2312.08444
Autor:
Sandoval, Brandon, Foord, Adi, Allen, Steven W., Volonteri, Marta, Stemo, Aaron, Chen, Nianyi, Di Matteo, Tiziana, Gultekin, Kayhan, Habouzit, Melanie, Puerto-Sanchez, Clara, Hodges-Kluck, Edmund, Dubois, Yohan
We present an analysis searching for dual AGN among 62 high-redshift ($2.5 < z < 3.5$) X-ray sources selected from publicly available deep Chandra fields. We aim to quantify the frequency of dual AGN in the high-redshift Universe, which holds implica
Externí odkaz:
http://arxiv.org/abs/2312.02311
Overdense regions at high redshift ($z \gtrsim 2$) are perfect laboratories to study the relations between environment and SMBH growth, and the AGN feedback processes on the surrounding galaxies and diffuse gas. In this white paper, we discuss how AX
Externí odkaz:
http://arxiv.org/abs/2311.08466
Hot gas around a supermassive black hole (SMBH) should be captured within the gravitational "sphere of influence", characterized by the Bondi radius. Deep Chandra observations have spatially resolved the Bondi radii of at least five nearby SMBHs. Con
Externí odkaz:
http://arxiv.org/abs/2311.08458
This study presents the capabilities of the AXIS telescope in estimating redshifts from X-ray spectra alone (X-ray redshifts, XZs). Through extensive simulations, we establish that AXIS observations enable reliable XZ estimates for more than 5500 obs
Externí odkaz:
http://arxiv.org/abs/2311.08449
Jets powered by AGN in the early Universe ($z \gtrsim 6$) have the potential to not only define the trajectories of the first-forming massive galaxies but to enable the accelerated growth of their associated SMBHs. Under typical assumptions, jets cou
Externí odkaz:
http://arxiv.org/abs/2311.08451
This white paper explores the detectability of intermediate-mass black holes (IMBHs) wandering in the Milky Way (MW) and massive local galaxies, with a particular emphasis on the role of AXIS. IMBHs, ranging within $10^{3-6} \, M_\odot$, are commonly
Externí odkaz:
http://arxiv.org/abs/2311.08448
Autor:
Cappelluti, Nico, Foord, Adi, Marchesi, Stefano, Pacucci, Fabio, Ricarte, Angelo, Habouzit, Melanie, Vito, Fabio, Powell, Meredith, Koss, Michael, Mushotzky, Richard, AGN-SWG, the AXIS
The nature and origin of supermassive black holes (SMBHs) remain an open matter of debate within the scientific community. While various theoretical scenarios have been proposed, each with specific observational signatures, the lack of sufficiently s
Externí odkaz:
http://arxiv.org/abs/2311.07669
Autor:
Foord, Adi, Cappelluti, Nico, Liu, Tingting, Volonteri, Marta, Habouzit, Melanie, Pacucci, Fabio, Marchesi, Stefano, Chen, Nianyi, Di Matteo, Tiziana, Mallick, Labani, Koss, Michael
We present an analysis showcasing how the Advanced X-ray Imaging Satellite (AXIS), a proposed NASA Probe-class mission, will significantly increase our understanding of supermassive black holes undergoing mergers -- from kpc to sub-pc scales. In part
Externí odkaz:
http://arxiv.org/abs/2311.07664
Autor:
Reynolds, Christopher S., Kara, Erin A., Mushotzky, Richard F., Ptak, Andrew, Koss, Michael J., Williams, Brian J., Allen, Steven W., Bauer, Franz E., Bautz, Marshall, Bodaghee, Arash, Burdge, Kevin B., Cappelluti, Nico, Cenko, Brad, Chartas, George, Chan, Kai-Wing, Corrales, Lía, Daylan, Tansu, Falcone, Abraham D., Foord, Adi, Grant, Catherine E., Habouzit, Mélanie, Haggard, Daryl, Herrmann, Sven, Hodges-Kluck, Edmund, Kargaltsev, Oleg, King, George W., Kounkel, Marina, Lopez, Laura A., Marchesi, Stefano, McDonald, Michael, Meyer, Eileen, Miller, Eric D., Nynka, Melania, Okajima, Takashi, Pacucci, Fabio, Russell, Helen R., Safi-Harb, Samar, Stassun, Keivan G., Falcão, Anna Trindade, Walker, Stephen A., Wilms, Joern, Yukita, Mihoko, Zhang, William W.
The Advanced X-ray Imaging Satellite (AXIS) is a Probe-class concept that will build on the legacy of the Chandra X-ray Observatory by providing low-background, arcsecond-resolution imaging in the 0.3-10 keV band across a 450 arcminute$^2$ field of v
Externí odkaz:
http://arxiv.org/abs/2311.00780