Zobrazeno 1 - 10
of 12 659
pro vyhledávání: '"Cann A"'
Autor:
Bierschenk, M., Ricci, C., Temple, M. J., Satyapal, S., Cann, J., Xie, Y., Diaz, Y., Ichikawa, K., Koss, M. J., Bauer, F. E., Rojas, A., Kakkad, D., Tortosa, A., Ricci, F., Mushotzky, R., Kawamuro, T., Gupta, K. K., Trakhtenbrot, B., Chang, C. S., Riffel, R., Oh, K., Harrison, F., Powell, M., Stern, D., Urry, C. M.
We analyze the Spitzer spectra of 140 active galactic nuclei (AGN) detected in the hard X-rays (14-195 keV) by the Burst Alert Telescope (BAT) on board Swift. This sample allows us to probe several orders of magnitude in black hole masses ($10^6-10^9
Externí odkaz:
http://arxiv.org/abs/2409.17334
Autor:
McKaig, Jeffrey D., Satyapal, Shobita, Laor, Ari, Abel, Nicholas P., Doan, Sara M., Ricci, Claudio, Cann, Jenna M.
Forbidden collisionally excited optical atomic transitions from high ionization potential (IP$\geq$54.8\,eV) ions, such as Ca$^{\mathrm{4+}}$, Ne$^{\mathrm{4+}}$, Fe$^{\mathrm{6+}}$, Fe$^{\mathrm{10+}}$, Fe$^{\mathrm{13+}}$, Ar$^{\mathrm{9+}}$, and S
Externí odkaz:
http://arxiv.org/abs/2408.15229
Autor:
Doan, Sara, Satyapal, Shobita, Matzko, William, Abel, Nicholas P., Böker, Torsten, Bohn, Thomas, Canalizo, Gabriela, Cann, Jenna M., Fischer, Jacqueline, LaMassa, Stephanie, Madden, Suzanne C., McKaig, Jeffrey D., Schaerer, D., Secrest, Nathan J., Seth, Anil, Blecha, Laura, Molina, Mallory, Rothberg, Barry
Local low metallicity galaxies with signatures of possible accretion activity are ideal laboratories in which to search for the lowest mass black holes and study their impact on the host galaxy. Here we present the first JWST NIRSpec IFS observations
Externí odkaz:
http://arxiv.org/abs/2408.04774
Autor:
Weaver, Kimberly A., Cann, Jenna M., Pfeifle, Ryan W., Sobolewska, Malgorzata, Pinto, Ciro, Azadi, Mojegan, Porquet, Delphine, Chakraborty, Priyanka, Rogantini, Daniele, Schellenberger, Gerrit, Tanner, Ryan, Mei, Simona, Bogdan, Akos, Nguyen, Dustin
This white paper discusses the breadth of science related to active galactic nuclei (AGN) and associated phenomena to be enabled by a mission with microcalorimeter energy resolution in the soft X-ray band, a large collecting area, and wide-field imag
Externí odkaz:
http://arxiv.org/abs/2406.18743
Autor:
Weaver, Kimberly A., Cann, Jenna M., Valencic, Lynne, Pfeifle, Ryan W., Kuntz, K. D., Campbell, Joel F., Engle, Kimberly, Tanner, Ryan, Hodges-Kluck, Edmund, Carlton, Isabella, McCarthy, Miranda
NGC 4945 contains a well-known heavily obscured active galactic nucleus (AGN) at its core, with prior reports of strong nuclear and off-nuclear neutral Fe K$\alpha$ emission due to the AGN activity. We report the discovery of very extended Fe K$\alph
Externí odkaz:
http://arxiv.org/abs/2404.03730
Autor:
Khabibullin, Ildar, Galeazzi, Massimiliano, Bogdan, Akos, Cann, Jenna M., Churazov, Eugene, Dolag, Klaus, Drake, Jeremy J., Forman, William, Hernquist, Lars, Koutroumpa, Dimitra, Kraft, Ralph, Kuntz, K. D., Markevitch, Maxim, McCammon, Dan, Ogorzalek, Anna, Pfeifle, Ryan, Pillepich, Annalisa, Plucinsky, Paul P., Ponti, Gabriele, Schellenberger, Gerrit, Truong, Nhut, Valentini, Milena, Veilleux, Sylvain, Vladutescu-Zopp, Stephan, Wang, Q. Daniel, Weaver, Kimberly
The Line Emission Mapper (LEM) is an X-ray Probe with with spectral resolution ~2 eV FWHM from 0.2 to 2.5 keV and effective area >2,500 cm$^2$ at 1 keV, covering a 33 arcmin diameter Field of View with 15 arcsec angular resolution, capable of perform
Externí odkaz:
http://arxiv.org/abs/2310.16038
Autor:
Cann, Jenna M., Martinez, Arturo O., Barnes, Amethyst, Doan, Sara, Ilesanmi, Feyi, Lazzarini, Margaret, Monsue, Teresa, Pinedo, Carlos, Salazar, Nicole Cabrera, Steele, Amy
In line with the Astro2020 Decadal Report State of the Profession findings and the NASA core value of Inclusion, the NASA Science Mission Directorate (SMD) Bridge Program was created to provide financial and programmatic support to efforts that work
Externí odkaz:
http://arxiv.org/abs/2310.15287
Autor:
Cann, Jenna M., Weaver, Kimberly A., Pfeifle, Ryan W., Secrest, Nathan J., Satyapal, Shobita, Gliozzi, Mario
One of the primary outstanding questions in extragalactic astronomy is the formation and early evolution of the supermassive black holes that are seen in nearly every massive galaxy. Low metallicity dwarf galaxies may offer the most representative lo
Externí odkaz:
http://arxiv.org/abs/2310.02999
Autor:
Brightman, Murray, Hameury, Jean-Marie, Lasota, Jean-Pierre, Baldi, Ranieri D., Bruni, Gabriele, Cann, Jenna M., Earnshaw, Hannah, Fürst, Felix, Heida, Marianne, Jaodand, Amruta, Lazzarini, Margaret, Middleton, Matthew J., Walton, Dominic J., Weaver, Kimberly A.
Ultraluminous X-ray sources (ULXs) are our best laboratories for studying extreme super-Eddington accretion. Most studies of these objects are of relatively persistent sources, however there is growing evidence to suggest a large fraction of these so
Externí odkaz:
http://arxiv.org/abs/2305.01693
Online discourse covers a wide range of topics and many actors tailor their content to impact online discussions through carefully crafted messages and targeted campaigns. Yet the scale and diversity of online media content make it difficult to evalu
Externí odkaz:
http://arxiv.org/abs/2303.16694