Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Ptak, Andrew"'
Autor:
Garofali, Kristen, Basu-Zych, Antara R., Johnson, Benjamin D., Tzanavaris, Panayiotis, Jaskot, Anne, Richardson, Chris, 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
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::533d96340fc68528fba54857993c41e8
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa60055e3a73cfe678badcb3c6c68699
Autor:
Hodges-Kluck, Edmund, Lopez, Laura A., Yukita, Mihoko, Ptak, Andrew, Swartz, Douglas, Tzanavaris, Panayiotis, Veilleux, Sylvain, Bregman, Joel N.
Stellar feedback -- stars regulating further star formation through the injection of energy and momentum into the interstellar medium -- operates through a complex set of processes that originate in star clusters but shape entire galaxies. A mature t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a9fea3f2bdf22f676d1211b37fcde46
Autor:
Harrison, Fiona A., Craig, William W., Christensen, Finn E., Hailey, Charles J., Zhang, Will W., Boggs, Steven E., Stern, Daniel, Cook, W. Rick, Forster, Karl, Giommi, Paolo, Grefenstette, Brian W., Kim, Yunjin, Kitaguchi, Takao, Koglin, Jason E, Madsen, Kristin K., Mao, Peter H., Miyasaka, Hiromasa, Mori, Kaya, Perri, Matteo, Pivovaroff, Michael J., Puccetti, Simonetta, Rana, Vikram R., Westergaard, Niels J., Willis, Jason, Zoglauer, Andreas, An, Hongjun, Bachetti, Matteo, Barriere, Nicolas M., Bellm, Eric C., Bhalerao, Varun, Brejnholt, Nicolai F., Fuerst, Felix, Liebe, Carl C., Markwardt, Craig B., Nynka, Melania, Vogel, Julia K., Walton, Dominic J., Wik, Daniel R., Alexander, David M., Cominsky, Lynn R., Hornschemeier, Ann E., Hornstrup, Allan, Kaspi, Victoria M., Madejski, Greg M., Matt, Giorgio, Molendi, Silvano, Smith, David M., Tomsick, John A., Ajello, Marco, Ballantyne, David R., Balokovic, Mislav, Barret, Diddier, Bauer, Franz E., Blandford, Roger D., Brandt, W. Niel, Brenneman, Laura W., Chiang, James, Chakrabarty, Deepto, Chenevez, Jerome, Comastri, Andrea, Elvis, Martin, Fabian, Andrew C., Farrah, Duncan, Fryer, Chris L., Gotthelf, Eric V., Grindlay, Jonathan E., Helfand, David J., Krivonos, Roman, Meier, David L., Miller, Jon M., Natalucci, Lorenzo, Ogle, Patrick, Ofek, Eran O., Ptak, Andrew, Reynolds, Stephen P., Rigby, Jand R., Tagliaferri, Gianpiero, Thorsett, Stephen E., Treister, Ezequiel, Urry, C. Megan
The Nuclear Spectroscopic Telescope Array (NuSTAR) mission, launched on 13 June 2012, is the first focusing high-energy X-ray telescope in orbit. NuSTAR operates in the band from 3 -- 79 keV, extending the sensitivity of focusing far beyond the ~10 k
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8ca07c4776541e9060d694fc23a5681
Using the spectra of a sample of $\sim$28,000 nearby obscured active galaxies from Data Release 7 of the Sloan Digital Sky Survey (SDSS), we probe the connection between AGN activity and star formation over a range of radial scales in the host galaxy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82f86c19f1e87a1a3228101484d5babe
We present a {\it Chandra} observation of IRAS 19254--7245, a nearby ULIRG also known as {\it the Superantennae}. The high spatial resolution of {\it Chandra} allows us to disentangle for the first time the diffuse starburst emission from the embedde
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c14bccc74355e8486f87935e0aa9449
Autor:
LaMassa, Stephanie M., Heckman, Timothy M., Ptak, Andrew, Martins, Lucimara, Wild, Vivienne, Sonnentrucker, Paule, Tremonti, Christy
We consider five indicators for intrinsic AGN luminosity: the luminosities of the [OIII]$\lambda$5007 line, the [OIV]25.89$\mu$m line, the mid-infrared (MIR) continuum emission by the torus, and the radio and hard X-ray (E $>$ 10keV) continuum emissi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db3fa19a8e2c51400cd67f481292ab53
Autor:
Strickland, David K., Hornschemeier, Ann, Ptak, Andrew, Schlegel, Eric, Tremonti, Christy, Tsuru, Takeshi, Tuellmann, Ralph, Zezas, Andreas
What is the contribution of mass, metals and energy from starburst galaxies to the Intergalactic Medium? Starburst galaxies drive galactic-scale outflows or "superwinds" that may be responsible for removing metals from galaxies and polluting the Inte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b52033814c64b54dbf124d1e024206be
Autor:
Ho, Luis C., Feigelson, Eric D., Townsley, Leisa K., Sambruna, Rita M., Garmire, Gordon P., Brandt, W. N., Filippenko, Alexei V., Griffiths, Richard E., Ptak, Andrew F., Sargent, Wallace L. W.
We report preliminary results from an arcsecond-resolution X-ray survey of nearby galaxies using ACIS on board Chandra. The total sample consists of 41 low-luminosity AGNs, including Seyferts, LINERs, and LINER/H II transition objects. In the initial
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5aad2cdb9fa4e7712c171b858bb4bf96