Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Ponnada, Sam"'
Autor:
Ponnada, Sam B., Cochrane, Rachel K., Hopkins, Philip F., Butsky, Iryna S., Wellons, Sarah, Sanchez, N. Nicole, Hummels, Cameron, Lu, Yue Samuel, Kereš, Dušan, Hayward, Christopher C.
The far-infrared (FIR) - radio correlation (FRC) is one of the most promising empirical constraints on the role of cosmic-rays (CRs) and magnetic fields (\textbf{B}) in galaxy formation and evolution. While many theories have been proposed in order t
Externí odkaz:
http://arxiv.org/abs/2410.02971
We investigate the contribution of host galaxies to the overall Dispersion Measures (DMs) for Fast Radio Bursts (FRBs) using the Feedback in Realistic Environments (FIRE-2) cosmological zoom-in simulation suite. We calculate DMs from every star parti
Externí odkaz:
http://arxiv.org/abs/2406.03523
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
Carbon monoxide (CO) is a poor tracer of H$_{2}$ in the diffuse interstellar medium (ISM), where most of the carbon is not incorporated into CO molecules unlike the situation at higher extinctions. We present a novel, indirect method to constrain H$_
Externí odkaz:
http://arxiv.org/abs/2312.02274
Autor:
Su, Kung-Yi, Bryan, Greg L., Hayward, Christopher C., Somerville, Rachel S., Hopkins, Philip F., Emami, Razieh, Faucher-Giguère, Claude-André, Quataert, Eliot, Ponnada, Sam B., Fielding, Drummond, Kereš, Dušan
In the absence of supplementary heat, the radiative cooling of halo gas around massive galaxies (Milky Way mass and above) leads to an excess of cold gas or stars beyond observed levels. AGN jet-induced heating is likely essential, but the specific p
Externí odkaz:
http://arxiv.org/abs/2310.17692
Autor:
Byrne, Lindsey, Faucher-Giguère, Claude-André, Wellons, Sarah, Hopkins, Philip F., Anglés-Alcázar, Daniel, Sultan, Imran, Wijers, Nastasha, Moreno, Jorge, Ponnada, Sam
Feedback from supermassive black holes is believed to be a critical driver of the observed color bimodality of galaxies above the Milky Way mass scale. AGN feedback has been modeled in many galaxy formation simulations, but most implementations have
Externí odkaz:
http://arxiv.org/abs/2310.16086
Autor:
Ponnada, Sam B., Butsky, Iryna S., Skalidis, Raphael, Hopkins, Philip F., Panopoulou, Georgia V., Hummels, Cameron, Kereš, Dušan, Quataert, Eliot, Faucher-Giguère, Claude-André, Su, Kung-Yi
Cosmic rays (CRs) may drive outflows and alter the phase structure of the circumgalactic medium, with potentially important implications on galaxy formation. However, these effects ultimately depend on the dominant mode of transport of CRs within and
Externí odkaz:
http://arxiv.org/abs/2309.16752
Autor:
Ponnada, Sam B., Panopoulou, Georgia V., Butsky, Iryna S., Hopkins, Philip F., Skalidis, Raphael, Hummels, Cameron, Quataert, Eliot, Kereš, Dušan, Faucher-Giguère, Claude-André, Su, Kung-Yi
Synchrotron emission is one of few observable tracers of galactic magnetic fields (\textbf{B}) and cosmic rays (CRs). Much of our understanding of \textbf{B} in galaxies comes from utilizing synchrotron observations in conjunction with several simpli
Externí odkaz:
http://arxiv.org/abs/2309.04526
Autor:
Butsky, Iryna S., Hopkins, Philip F., Kempski, Philipp, Ponnada, Sam B., Quataert, Eliot, Squire, Jonathan
Cosmic rays (CRs) with energies $\ll$ TeV comprise a significant component of the interstellar medium (ISM). Major uncertainties in CR behavior on observable scales (much larger than CR gyroradii) stem from how magnetic fluctuations scatter CRs in pi
Externí odkaz:
http://arxiv.org/abs/2308.06316
Autor:
Butsky, Iryna S., Nakum, Shreya, Ponnada, Sam B., Hummels, Cameron B., Ji, Suoqing, Hopkins, Philip F.
Recent theoretical studies predict that the circumgalactic medium (CGM) around low-redshift, $\sim L_*$ galaxies could have substantial nonthermal pressure support in the form of cosmic rays. However, these predictions are sensitive to the specific m
Externí odkaz:
http://arxiv.org/abs/2210.14232