Zobrazeno 1 - 10
of 208
pro vyhledávání: '"Ptak, Andrew"'
Autor:
Sarkar, Arnab, Grant, Catherine E., Miller, Eric D., Bautz, Mark, Schneider, Benjamin, Foster, Rick F., Schellenberger, Gerrit, Allen, Steven, Kraft, Ralph P., Wilkins, Dan, Falcone, Abe, Ptak, Andrew
Galactic cosmic ray (GCR) particles have a significant impact on the particle-induced background of X-ray observatories, and their flux exhibits substantial temporal variability, potentially influencing background levels. In this study, we present on
Externí odkaz:
http://arxiv.org/abs/2405.06602
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
Autor:
Günther, Hans Moritz, Cheimets, Peter, Miller, Eric D., DeRoo, Casey, Smith, Randall K., Ptak, Andrew, Heilmann, Ralf K.
Arcus is a concept for a probe class mission to deliver high-resolution FUV and X-ray spectroscopy. For X-rays, it combines cost-effective silicon pore optics (SPO) with high-throughput critical-angle transmission (CAT) gratings to achieve $R> 3000$
Externí odkaz:
http://arxiv.org/abs/2309.16939
Autor:
Miller, Eric D., Bautz, Marshall W., Grant, Catherine E., Foster, Richard F., LaMarr, Beverly, Malonis, Andrew, Prigozhin, Gregory, Schneider, Benjamin, Leitz, Christopher, Herrmann, Sven, Allen, Steven W., Chattopadhyay, Tanmoy, Orel, Peter, Morris, R. Glenn, Stueber, Haley, Falcone, Abraham D., Ptak, Andrew, Reynolds, Christopher
AXIS is a Probe-class mission concept that will provide high-throughput, high-spatial-resolution X-ray spectral imaging, enabling transformative studies of high-energy astrophysical phenomena. To take advantage of the advanced optics and avoid photon
Externí odkaz:
http://arxiv.org/abs/2309.00717
Autor:
Lambrides, Erini, Chiaberge, Marco, Long, Arianna, Liu, Daizhong, Akins, Hollis B., Ptak, Andrew F., Andika, Irham Taufik, Capetti, Alessandro, Casey, Caitlin M., Champagne, Jaclyn B., Chworowsky, Katherine, Clarke, Tracy E., Cooper, Olivia R., Ding, Xuheng, Dong, Dillon Z., Faisst, Andreas L., Forman, Jordan Y., Franco, Maximilien, Gillman, Steven, Gozaliasl, Ghassem, Hall, Kirsten R., Harish, Santosh, Hayward, Christopher C., Hirschmann, Michaela, Hutchison, Taylor A., Jahnke, Knud, Jin, Shuowen, Kartaltepe, Jeyhan S., Kleiner, Emma T., Koekemoer, Anton M., Kokorev, Vasily, Manning, Sinclaire M., Martin, Crystal L., McKinney, Jed, Norman, Colin, Nyland, Kristina, Onoue, Masafusa, Robertson, Brant E., Shuntov, Marko, Silverman, John D., Stiavelli, Massimo, Trakhtenbrot, Benny, Vardoulaki, Eleni, Zavala, Jorge A., Allen, Natalie, Ilbert, Olivier, McCracken, Henry Joy, Paquereau, Louise, Rhodes, Jason, Toft, Sune
In this letter, we report the discovery of the highest redshift, heavily obscured, radio-loud AGN candidate selected using JWST NIRCam/MIRI, mid-IR, sub-mm, and radio imaging in the COSMOS-Web field. Using multi-frequency radio observations and mid-I
Externí odkaz:
http://arxiv.org/abs/2308.12823
Autor:
Garofali, Kristen, Basu-Zych, Antara R., Johnson, Benjamin D., Tzanavaris, Panayiotis, Jaskot, Anne, Richardson, Chris T., Lehmer, Bret D., Yukita, Mihoko, Hodges-Kluck, Edmund, Hornschemeier, Ann, Ptak, Andrew, Vulic, Neven
We present a methodology for modeling the joint ionizing impact due to a "simple X-ray population" (SXP) and its corresponding simple stellar population (SSP), where "simple" refers to a single age and metallicity population. We construct composite s
Externí odkaz:
http://arxiv.org/abs/2307.00050
Autor:
Rossland, Steven, Wik, Daniel, Grefenstette, Brian, Cappelluti, Nico, Civano, Francesca, Gastaldello, Fabio, Gilli, Roberto, Harrison, Fiona, Hornschemeier, Ann, Hickox, Ryan, Krivonos, Roman, Madsen, Kristin, Molendi, Silvano, Ptak, Andrew, Stern, Daniel, Zoglauer, Andreas
By characterizing the contribution of stray light to large datasets from the NuSTAR X-ray observatory collected over 2012--2017, we report a measurement of the cosmic X-ray background in the 3--20 keV energy range. These data represent $\sim20\%$ sky
Externí odkaz:
http://arxiv.org/abs/2304.07962
Autor:
Doore, Keith, Eufrasio, Rafael T., Lehmer, Bret D., Monson, Erik B., Basu-Zych, Antara, Garofali, Kristen, Ptak, Andrew
Publikováno v:
ApJ 923 (2021) 26
We develop and implement an inclination-dependent attenuation prescription for spectral energy distribution (SED) fitting and study its impact on derived star-formation histories. We apply our prescription within the SED fitting code Lightning to a c
Externí odkaz:
http://arxiv.org/abs/2109.05039
Autor:
Kovlakas, Konstantinos, Zezas, Andreas, Andrews, Jeff J., Basu-Zych, Antara, Fragos, Tassos, Hornschemeier, Ann, Kouroumpatzakis, Konstantinos, Lehmer, Bret, Ptak, Andrew
We present the Heraklion Extragalactic Catalogue, or HECATE, an all-sky value-added galaxy catalogue, aiming to facilitate present and future multi-wavelength and multi-messenger studies in the local Universe. It contains 204,733 galaxies up to a red
Externí odkaz:
http://arxiv.org/abs/2106.12101
Autor:
Garofali, Kristen, Lehmer, Bret D., Basu-Zych, Antara, West, Lacey A., Wik, Daniel, Yukita, Mihoko, Vulic, Neven, Ptak, Andrew, Hornschemeier, Ann
Binary population synthesis combined with cosmological models suggest that X-ray emission from star-forming galaxies, consisting primarily of emission from X-ray binaries (XRBs) and the hot interstellar medium (ISM), could be an important, and perhap
Externí odkaz:
http://arxiv.org/abs/2009.08985