Zobrazeno 1 - 10
of 4 756
pro vyhledávání: '"A. P. Ballantyne"'
Autor:
Ray, Paul S., Roming, Peter W. A., Argan, Andrea, Arzoumanian, Zaven, Ballantyne, David R., Bogdanov, Slavko, Bonvicini, Valter, Brandt, Terri J., Bursa, Michal, Cackett, Edward M., Chakrabarty, Deepto, Christophersen, Marc, Coderre, Kathleen M., De Geronimo, Gianluigi, Del Monte, Ettore, DeRosa, Alessandra, Dietz, Harley R., Evangelista, Yuri, Feroci, Marco, Ford, Jeremy J., Froning, Cynthia, Fryer, Christopher L., Gendreau, Keith C., Goldstein, Adam, Gonzalez, Anthony H., Hartmann, Dieter, Hernanz, Margarita, Hutcheson, Anthony, Zand, Jean in `t, Jenke, Peter, Kennea, Jamie, Lloyd-Ronning, Nicole M., Maccarone, Thomas J., Maes, Dominic, Markwardt, Craig B., Michalska, Malgorzata, Okajima, Takashi, Patruno, Alessandro, Persyn, Steven C., Phillips, Mark L., Prescod-Weinstein, Chanda, Redfern, Jillian A., Remillard, Ronald A., Santangelo, Andrea, Schwendeman, Carl L., Sleator, Clio, Steiner, James, Strohmayer, Tod E., Svoboda, Jiri, Tenzer, Christoph, Thompson, Steven P., Warwick, Richard W., Watts, Anna L., Wilson-Hodge, Colleen A., Wu, Xin, Wulf, Eric A., Zampa, Gianluigi
We give an overview of the science objectives and mission design of the Spectroscopic Time-Resolving Observatory for Broadband Energy X-rays (STROBE-X) observatory, which has been proposed as a NASA probe-class (~$1.5B) mission in response to the Ast
Externí odkaz:
http://arxiv.org/abs/2410.08342
The accretion flow onto a neutron star will be impacted due to irradiation by a Type I X-ray burst. The burst radiation exerts Poynting-Robertson (PR) drag on the accretion disk, leading to an enhanced mass accretion rate. Observations of X-ray burst
Externí odkaz:
http://arxiv.org/abs/2409.05737
Autor:
A. Bastos, P. Ciais, F. Chevallier, C. Rödenbeck, A. P. Ballantyne, F. Maignan, Y. Yin, M. Fernández-Martínez, P. Friedlingstein, J. Peñuelas, S. L. Piao, S. Sitch, W. K. Smith, X. Wang, Z. Zhu, V. Haverd, E. Kato, A. K. Jain, S. Lienert, D. Lombardozzi, J. E. M. S. Nabel, P. Peylin, B. Poulter, D. Zhu
Publikováno v:
Atmospheric Chemistry and Physics, Vol 19, Pp 12361-12375 (2019)
Continuous atmospheric CO2 monitoring data indicate an increase in the amplitude of seasonal CO2-cycle exchange (SCANBP) in northern high latitudes. The major drivers of enhanced SCANBP remain unclear and intensely debated, with land-use change, CO2
Externí odkaz:
https://doaj.org/article/ae0a9570a15a4c709636b1b88a03ad11
Autor:
T. L. Fletcher, L. Warden, J. S. Sinninghe Damsté, K. J. Brown, N. Rybczynski, J. C. Gosse, A. P. Ballantyne
Publikováno v:
Climate of the Past, Vol 15, Pp 1063-1081 (2019)
The mid-Pliocene is a valuable time interval for investigating equilibrium climate at current atmospheric CO2 concentrations because atmospheric CO2 concentrations are thought to have been comparable to the current day and yet the climate and distrib
Externí odkaz:
https://doaj.org/article/3c33fa5866214f5fad612fe9beb240b1
Autor:
Palit, B., Rozanska, A., Petrucci, P. O., Gronkiewicz, D., Barnier, S., Bianchi, S., Ballantyne, D. R., Gianolli, V. E., Middei, R., Belmont, R., Ursini, F.
In the X-ray spectra of AGNs, a noticeable excess of soft X-rays is typically detected beyond the extrapolation of the power-law trend observed between 2-10 keV. In the scenario of warm Comptonization, observations propose a warm corona temperature r
Externí odkaz:
http://arxiv.org/abs/2406.14378
Autor:
Vaia, B., Ursini, F., Matt, G., Ballantyne, D. R., Bianchi, S., De Rosa, A., Middei, R., Petrucci, P. O., Piconcelli, E., Tortosa, A.
Publikováno v:
A&A 688, A189 (2024)
The enigmatic and intriguing phenomenon of the "soft excess" observed in the X-ray spectra of luminous quasars continues to be a subject of considerable interest and debate in the field of high-energy astrophysics. This study focuses on the quasar HE
Externí odkaz:
http://arxiv.org/abs/2405.13479
Autor:
Greenwell, Claire L., Klindt, Lizelke, Lansbury, George B., Rosario, David J., Alexander, David M., Aird, James, Stern, Daniel, Forster, Karl, Koss, Michael J., Bauer, Franz E., Ricci, Claudio, Tomsick, John, Brandt, William N., Connor, Thomas, Boorman, Peter G., Annuar, Adlyka, Ballantyne, David R., Chen, Chien-Ting, Civano, Francesca, Comastri, Andrea, Fawcett, Victoria A., Fornasini, Francesca M., Gandhi, Poshak, Harrison, Fiona, Heida, Marianne, Hickox, Ryan, Kammoun, Elias S., Lanz, Lauranne, Marchesi, Stefano, Noirot, Gaël, Romero-Colmenero, Encarni, Treister, Ezequiel, Urry, C. Megan, Väisänen, Petri, van Soelen, Brian
We present a catalog of hard X-ray serendipitous sources detected in the first 80 months of observations by the Nuclear Spectroscopic Telescope Array (NuSTAR). The NuSTAR serendipitous survey 80-month (NSS80) catalog has an unprecedented $\sim$ 62 Ms
Externí odkaz:
http://arxiv.org/abs/2404.17637
Autor:
Qutob, Nadia, Emami, Razieh, Su, Kung-Yi, Smith, Randall, Hernquist, Lars, Triani, Dian P., Hummels, Cameron, Fielding, Drummond, Hopkins, Philip F., Somerville, Rachel S., Ballantyne, David R., Vogelsberger, Mark, Tremblay, Grant, Steiner, James F., Finkbeiner, Douglas, Narayan, Ramesh, Park, Minjung, Grindlay, Josh, Natarajan, Priyamvada, Hayward, Christopher C., Kereš, Dušan, Ponnada, Sam B., Belli, Sirio, Davies, Rebecca, Maheson, Gabriel, Bugiani, Letizia, Li, Yijia
We make an in-depth analysis of different AGN jet models' signatures, inducing quiescence in galaxies with a halo mass of $10^{12} M_\odot$. Three jet models, including cosmic ray-dominant, hot thermal, and precessing kinetic jets, are studied at two
Externí odkaz:
http://arxiv.org/abs/2312.14809
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:
Piotrowska, J. M., García, J. A., Walton, D. J., Beckmann, R. S., Stern, D., Ballantyne, D. R., Wilkins, D. R., Bianchi, S., Boorman, P. G., Buchner, J., Chen, C. -T., Coppi, P., Dauser, T., Fabian, A. C., Kammoun, E., Madsen, K., Mallick, L., Matt, G., Matzeu, G., Nardini, E., Pizzetti, A., Puccetti, S., Ricci, C., Tombesi, F., Torres-Albà, N., Wong, K. -W., Collaboration, the HEX-P
Constraining the primary growth channel of supermassive black holes (SMBH) remains one the most actively debated questions in the context of cosmological structure formation. Owing to the expected connection between SMBH spin parameter evolution and
Externí odkaz:
http://arxiv.org/abs/2311.04752