Kavli Affiliate: Avi Shporer | First 5 Authors: Justin M. Wittrock, Peter Plavchan, Bryson L. Cale, Thomas Barclay, Mathis R. Ludwig | Summary: AU Mic is a young (22 Myr) nearby exoplanetary system that exhibits excess TTVs that cannot be accounted for by the two known transiting planets nor stellar activity. We present the statistical […]
Kavli Affiliate: Michael Fausnaugh | First 5 Authors: Geoffrey Mo, Rahul Jayaraman, Michael Fausnaugh, Erik Katsavounidis, George R. Ricker | Summary: In 2017, the LIGO and Virgo gravitational wave (GW) detectors, in conjunction with electromagnetic (EM) astronomers, observed the first GW multi-messenger astrophysical event, the binary neutron star (BNS) merger GW170817. This marked the beginning […]
Kavli Affiliate: Dheeraj R. Pasham | First 5 Authors: Maia A. Williams, Jamie A. Kennea, S. Dichiara, Kohei Kobayashi, Wataru B. Iwakiri | Summary: We report the discovery of the unusually bright long-duration gamma-ray burst (GRB), GRB 221009A, as observed by the Neil Gehrels Swift Observatory (Swift), Monitor of All-sky X-ray Image (MAXI), and Neutron […]
Kavli Affiliate: Dheeraj R. Pasham | First 5 Authors: Maia A. Williams, Jamie A. Kennea, S. Dichiara, Kohei Kobayashi, Wataru B. Iwakiri | Summary: We report the discovery of the unusually bright long-duration gamma-ray burst (GRB), GRB 221009A, as observed by the Neil Gehrels Swift Observatory (Swift), Monitor of All-sky X-ray Image (MAXI), and Neutron […]
Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Alvaro Pozo, Tom Broadhurst, George F. Smoot, Tzihong Chiueh, Hoang Nhan Luu | Summary: Low mass galaxies in the Local Group are dominated by dark matter and comprise the well studied “dwarf Spheroidal" (dSph) class, with typical masses of $10^{9-10}M_odot$ and also the equally numerous “ultra faint […]
Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Alvaro Pozo, Tom Broadhurst, George F. Smoot, Tzihong Chiueh, Hoang Nhan Luu | Summary: Low mass galaxies in the Local Group are dominated by dark matter and comprise the well studied “dwarf Spheroidal" (dSph) class, with typical masses of $10^{9-10}M_odot$ and also the equally numerous “ultra faint […]
Kavli Affiliate: Ronald A. Remillard | First 5 Authors: Benjamin J. Ricketts, James F. Steiner, Cecilia Garraffo, Ronald A. Remillard, Daniela Huppenkothen | Summary: Black hole X-ray binary systems (BHBs) contain a close companion star accreting onto a stellar-mass black hole. A typical BHB undergoes transient outbursts during which it exhibits a sequence of long-lived […]
Kavli Affiliate: Ronald A. Remillard | First 5 Authors: Erin Barillier, Victoria Grinberg, David Horn, Michael A. Nowak, Ronald A. Remillard | Summary: 4U 1957+11 is a black hole candidate system that has been in a soft X-ray spectral state since its discovery. We present analyses of recent joint NICER and NuSTAR spectra, which are […]
Kavli Affiliate: Sara Seager | First 5 Authors: Dominic Oddo, Diana Dragomir, Alexis Brandeker, Hugh P. Osborn, Karen Collins | Summary: The radius valley carries implications for how the atmospheres of small planets form and evolve, but this feature is visible only with highly precise characterizations of many small planets. We present the characterization of […]
Kavli Affiliate: Dheeraj Pasham | First 5 Authors: Andrew Mummery, Thomas Wevers, Richard Saxton, Dheeraj Pasham, | Summary: We perform a comprehensive analysis of a population of 19 X-ray bright tidal disruption events (TDEs), fitting their X-ray spectra with a new, physically self consistent, relativistic accretion disc model. Not all of the TDEs inhabit regions […]