Kavli Affiliate: Risa H. Wechsler | First 5 Authors: Ethan O. Nadler, Vera Gluscevic, Trey Driskell, Risa H. Wechsler, Leonidas A. Moustakas | Summary: The abundance of faint dwarf galaxies is determined by the underlying population of low-mass dark matter (DM) halos and the efficiency of galaxy formation in these systems. Here, we quantify potential […]
Kavli Affiliate: Roger W. Romani | First 5 Authors: Jack T. Dinsmore, Roger W. Romani, , , | Summary: By measuring photoelectron tracks, the gas pixel detectors of the Imaging X-ray Polarimetry Explorer satellite provide estimates of the photon detection location and its electric vector position angle (EVPA). However, imperfections in reconstructing event positions blur […]
Kavli Affiliate: Grzegorz Madejski | First 5 Authors: Manel Errando, Ioannis Liodakis, Alan P. Marscher, Herman L. Marshall, Riccardo Middei | Summary: Observations of linear polarization in the 2-8 keV energy range with the Imaging X-ray Polarimetry Explorer (IXPE) explore the magnetic field geometry and dynamics of the regions generating non-thermal radiation in relativistic jets […]
Kavli Affiliate: Vahe Petrosian | First 5 Authors: Maria Giovanna Dainotti, Elias Taira, Eric Wang, Elias Lehman, Aditya Narendra | Summary: Gamma-Ray Bursts (GRBs), due to their high luminosities are detected up to redshift 10, and thus have the potential to be vital cosmological probes of early processes in the universe. Fulfilling this potential requires […]
Kavli Affiliate: Sarah Church | First 5 Authors: Che-Yu Chen, Rachel Friesen, Jialu Li, Anika Schmiedeke, David Frayer | Summary: The internal velocity structure within dense gaseous cores plays a crucial role in providing the initial conditions for star formation in molecular clouds. However, the kinematic properties of dense gas at core scales (~0.01 – […]
Kavli Affiliate: Nicola Omodei | First 5 Authors: M. Lynne Saade, Philip Kaaret, Andrea Gnarini, Juri Poutanen, Francesco Ursini | Summary: We present the first X-ray polarimetric study of the dipping accreting neutron star 4U 1624$-$49 with the Imaging X-ray Polarimetry Explorer (IXPE). We report a detection of polarization in the non-dip time intervals with […]
Kavli Affiliate: Tom Abel | First 5 Authors: Karsten Jedamzik, Tom Abel, , , | Summary: Primordial magnetic fields (PMFs) may explain observations of magnetic fields on extragalactic scales. They are most cleanly constrained by observations of details of the cosmic microwave background radiation (CMB) Their effects on cosmic recombination may even be at the […]
Kavli Affiliate: Roger W. Romani | First 5 Authors: Tirth Surti, Roger W. Romani, Julia Scharwächter, Alison Peck, Greg B. Taylor | Summary: We report on IFU measurements of the host of the radio source 4C+37.11. This massive elliptical contains the only resolved double compact nucleus at pc-scale separation, likely a bound supermassive black hole […]
Kavli Affiliate: Risa H. Wechsler | First 5 Authors: Noah Glennon, Nathan Musoke, Ethan O. Nadler, Chanda Prescod-Weinstein, Risa H. Wechsler | Summary: We explore how dynamical friction in an ultralight dark matter (ULDM) background is affected by dark matter self-interactions. We calculate the force of dynamical friction on a point mass moving through a […]
Kavli Affiliate: Richard Dubois | First 5 Authors: Edward Karavakis, Wen Guan, Zhaoyu Yang, Tadashi Maeno, Torre Wenaus | Summary: The Vera C. Rubin Observatory will produce an unprecedented astronomical data set for studies of the deep and dynamic universe. Its Legacy Survey of Space and Time (LSST) will image the entire southern sky every […]