Zobrazeno 1 - 10
of 55 775
pro vyhledávání: '"A Bret"'
Autor:
Bret, Antoine, Pe'er, Asaf
Collisionless shocks are complex nonlinear structures that are not yet fully understood. In particular, the interaction between these shocks and the particles they accelerate remains elusive. Based on an instability analysis that relates the shock wi
Externí odkaz:
http://arxiv.org/abs/2412.12911
The evolution of a deformed subcritical fast magnetosonic shock front is compared between two two-dimensional PIC simulations with different orientations of the magnetic field relative to the simulation box. All other initial and simulation condition
Externí odkaz:
http://arxiv.org/abs/2411.13434
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:
Wadge, Elliot, Terko, Afan, Lertzman-Lepofsky, George, Omelchenko, Paul, Heinrich, Bret, Rojas, Manuel, Girt, Erol
Spin spirals form inside the magnetic layers of antiferromagnetic and noncollinearly-coupled magnetic multilayers in the presence of an external magnetic field. This spin structure can be modeled to extract the direct exchange stiffness of the magnet
Externí odkaz:
http://arxiv.org/abs/2408.16222
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:
Rignon-Bret, Antoine
The generalized second law states the total entropy of any closed system as the universe cannot decrease if we include black hole entropy. From the point of view of an asymptotic observer, a black hole can be described at late time as an open system
Externí odkaz:
http://arxiv.org/abs/2406.15843
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
Publikováno v:
JHEP10(2024)101
We show that quantum circuit complexity for the unitary time evolution operator of any time-independent Hamiltonian is bounded by linear growth at early times, independent of any choices of the fundamental gates or cost metric. Deviations from linear
Externí odkaz:
http://arxiv.org/abs/2406.12990
Autor:
Rignon-Bret, Antoine, Speziale, Simone
We propose a new set of BMS charges at null infinity, characterized by a super-translation flux that contains only the `hard' term. This is achieved with a specific corner improvement of the symplectic 2-form, and we spell the conditions under which
Externí odkaz:
http://arxiv.org/abs/2405.08808