Zobrazeno 1 - 10
of 2 220
pro vyhledávání: '"LEHMER, A."'
Autor:
Umehata, H., Steidel, C. C., Smail, I., Swinbank, A. M., Monson, E. B., Rosario, D., Lehmer, B. D., Nakanishi, K., Kubo, M., Iono, D., Alexander, D. M., Kohno, K., Tamura, Y., Ivison, R. J., Saito, T., Mitsuhashi, I., Huang, S., Matsuda, Y.
In the present-day universe, the most massive galaxies are ellipticals located in the cores of galaxy clusters, harboring the heaviest super-massive black holes (SMBHs). However the mechanisms that drive the early growth phase and subsequent transfor
Externí odkaz:
http://arxiv.org/abs/2410.22155
Autor:
Lehmer, Bret D., Monson, Erik B., Eufrasio, Rafael T., Amiri, Amirnezam, Doore, Keith, Basu-Zych, Antara, Garofali, Kristen, Oskinova, Lidia, Andrews, Jeff J., Antoniou, Vallia, Geda, Robel, Greene, Jenny E., Kovlakas, Konstantinos, Lazzarini, Margaret, Richardson, Chris T.
We present a new empirical framework modeling the metallicity and star-formation history (SFH) dependence of X-ray luminous ($L > 10^{36}$ ergs s$^{-1}$) point-source population luminosity functions (XLFs) in normal galaxies. We expect the X-ray poin
Externí odkaz:
http://arxiv.org/abs/2410.19901
Autor:
Moon, Hannah, Wik, Daniel R., Antoniou, V., Eracleous, M., Hornschemeier, Ann E., Lazzarini, Margaret, Lehmer, Bret D., Vulic, Neven, Williams, Benjamin F., Maccarone, T. J., Pottschmidt, K., Ptak, Andrew, Yukita, Mihoko, Zezas, Andreas
Publikováno v:
ApJ 970, 167, 2024
Using hard (E>10 keV) X-ray observations with NuSTAR, we are able to differentiate between accretion states, and thus compact object types, of neutron stars and black holes in X-ray binaries (XRBs) in M31, our nearest Milky Way-type neighbor. Using t
Externí odkaz:
http://arxiv.org/abs/2408.02828
Autor:
Amiri, Amirnezam, Knapen, Johan H., Comerón, Sébastien, Marconi, Alessandro, Lehmer, Bret. D.
Publikováno v:
A&A 689, A193 (2024)
Metallicity measurements in galaxies can give valuable clues about galaxy evolution. One of the mechanisms postulated for metallicity redistribution in galaxies is gas flows induced by AGN, but the details of this process remain elusive. We report th
Externí odkaz:
http://arxiv.org/abs/2407.12158
Autor:
Vito, Fabio, Brandt, William N., Comastri, Andrea, Gilli, Roberto, Ivison, Rob J., Lanzuisi, Giorgio, Lehmer, Bret D., Lopez, Ivan E., Tozzi, Paolo, Vignali, Cristian
Publikováno v:
A&A 689, A130 (2024)
Protoclusters at $z>2$ are gas-rich regions characterized by high star-formation activity. The same physical properties that enhance star formation in protoclusters are also thought to boost the growth of SMBHs. We aim to test this scenario by probin
Externí odkaz:
http://arxiv.org/abs/2406.13005
Drawing from the Chandra archive and using a carefully selected set of nearby dwarf galaxies, we present a calibrated high-mass X-ray binary (HMXB) luminosity function in the low-mass galaxy regime and search for an already hinted at dependence on me
Externí odkaz:
http://arxiv.org/abs/2401.14477
Autor:
Kyer, Rebecca, Albrecht, Shelby, Williams, Benjamin F., Hinton, Kyros, Binder, Breanna, Lazzarini, Margaret, Garofali, Kristen, Lehmer, Bret, Eracleous, Michael, Plucinsky, Paul P., Antoniou, Vallia
We present a new five-epoch Chandra X-ray Observatory monitoring survey of the nearby spiral galaxy M33 which probes X-ray variability with time sampling between two weeks and four months. We characterize the X-ray variability of 55 bright point sour
Externí odkaz:
http://arxiv.org/abs/2312.03075
Autor:
Russell, H. R., Lopez, L. A., Allen, S. W., Chartas, G., Choudhury, P. P., Dupke, R. A., Fabian, A. C., Flores, A. M., Garofali, K., Hodges-Kluck, E., Koss, M. J., Lanz, L., Lehmer, B. D., Li, J. -T., Maksym, W. P., Mantz, A. B., McDonald, M., Miller, E. D., Mushotzky, R. F., Qiu, Y., Reynolds, C. S., Tombesi, F., Tozzi, P., Trindade-Falcao, A., Walker, S. A., Wong, K. -W., Yukita, M., Zhang, C.
Stellar and black hole feedback heat and disperse surrounding cold gas clouds, launching gas flows off circumnuclear and galactic disks and producing a dynamic interstellar medium. On large scales bordering the cosmic web, feedback drives enriched ga
Externí odkaz:
http://arxiv.org/abs/2311.07661
Autor:
Mori, Kaya, Ponti, Gabriele, Bachetti, Matteo, Bodaghee, Arash, Grindlay, Jonathan, Hong, Jaesub, Krivonos, Roman, Kuznetsova, Ekaterina, Mandel, Shifra, Rodriguez, Antonio, Stel, Giovanni, Zhang, Shuo, Bao, Tong, Bauer, Franz, Clavel, Maica, Coughenour, Benjamin, Garcia, Javier A., Gerber, Julian, Grefenstette, Brian, Jaodand, Amruta, Lehmer, Bret, Madsen, Kristin, Nynka, Melania, Predehl, Peter, Salcedo, Ciro, Stern, Daniel, Tomsick, John
HEX-P is a probe-class mission concept that will combine high spatial resolution X-ray imaging ($<10"$ FWHM) and broad spectral coverage (0.2-80 keV) with an effective area far superior to current facilities' (including XMM-Newton and NuSTAR). These
Externí odkaz:
http://arxiv.org/abs/2311.04854
Autor:
Lehmer, Bret D., Garofali, Kristen, Binder, Breanna A., Fornasini, Francesca, Vulic, Neven, Zezas, Andreas, Hornschemeier, Ann, Lazzarini, Margaret, Moon, Hannah, Venters, Toni, Wik, Daniel, Yukita, Mihoko, Bachetti, Matteo, García, Javier A., Grefenstette, Brian, Madsen, Kristin, Mori, Kaya, Stern, Daniel
We construct simulated galaxy data sets based on the High Energy X-ray Probe (HEX-P) mission concept to demonstrate the significant advances in galaxy science that will be yielded by the HEX-P observatory. The combination of high spatial resolution i
Externí odkaz:
http://arxiv.org/abs/2311.04735