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5 papers · 2 filters
Extreme AGN variability: evidence of magnetically elevated accretion?
Jason Dexter, Mitchell C. Begelman
Rapid, large amplitude variability at optical to X-ray wavelengths is now seen in an increasing number of Seyfert galaxies and luminous quasars. The variations imply a global chang…
Is there a left-handed magnetic field in the solar neighborhood? Exploring helical magnetic fields in the interstellar medium through dust polarization power spectra
Andrea Bracco, Simon Candelaresi, Fabio Del Sordo +1
The full-sky Planck polarization data at 850um revealed unexpected properties of the E and B mode power spectra of dust emission in the interstellar medium (ISM). The positive cros…
Measuring the Local ISM along the Sight Lines of the Two Voyager Spacecraft with HST/STIS
Julia Zachary, Seth Redfield, Jeffrey L. Linsky +1
In 2012, Voyager 1 crossed the heliopause, becoming the first human-made object to exit the solar system. This milestone signifies the beginning of an important new era for local i…
Direct Collapse to Supermassive Black Hole Seeds with Radiation Transfer: Cosmological Halos
Kazem Ardaneh, Yang Luo, Isaac Shlosman +3
We have modeled direct collapse of a primordial gas within dark matter halos in the presence of radiative transfer, in high-resolution zoom-in simulations in a cosmological framewo…
Direct Collapse to Supermassive Black Hole Seeds with Radiative Transfer: Isolated Halos
Yang Luo, Kazem Ardaneh, Isaac Shlosman +3
Direct collapse within dark matter (DM) halos is a promising path to form supermassive black hole (SMBH) seeds at high redshifts. The outer part of this collapse remains optically…