Kavli Affiliate: Craig Hogan | First 5 Authors: Kris Mackewicz, Craig Hogan, , , | Summary: A linear analytical solution is derived for the gravitational shock wave produced by a particle of mass $M$ that decays into a pair of null particles. The resulting space-time is shown to be unperturbed and isotropic, except for a […]
Kavli Affiliate: Linhua Jiang | First 5 Authors: Weiwei Xu, Huanyuan Shan, Ran Li, Chunxiang Wang, Linhua Jiang | Summary: The concentration-mass (c-M) relation encodes the key information of the assembly history of the dark matter halos, however its behavior at the high mass end has not been measured precisely in observations yet. In this […]
Kavli Affiliate: Michael Fausnaugh | First 5 Authors: Jason T. Hinkle, Thomas W. -S. Holoien, Benjamin. J. Shappee, Jack M. M. Neustadt, Katie Auchettl | Summary: We present observations of ASASSN-20hx, a nearby ambiguous nuclear transient (ANT) discovered in NGC 6297 by the All-Sky Automated Survey for Supernovae (ASAS-SN). We observed ASASSN-20hx from $-$30 to […]
Kavli Affiliate: Michael Fausnaugh | First 5 Authors: Jason T. Hinkle, Thomas W. -S. Holoien, Benjamin. J. Shappee, Jack M. M. Neustadt, Katie Auchettl | Summary: We present observations of ASASSN-20hx, a nearby ambiguous nuclear transient (ANT) discovered in NGC 6297 by the All-Sky Automated Survey for Supernovae (ASAS-SN). We observed ASASSN-20hx from $-$30 to […]
Oren Slone, Fangzhou Jiang, Mariangela Lisanti, Manoj Kaplinghat, | Summary: [[{“value”:”Dark matter self interactions can leave distinctive signatures on the properties of satellite galaxies around Milky Way–like hosts through their impact on tidal stripping, ram pressure, and gravothermal collapse. We delineate the regions of self-interacting dark matter parameter space — specified by interaction cross section […]
Kavli Affiliate: T. Higuchi | First 5 Authors: Belle II collaboration, F. Abudinén, I. Adachi, K. Adamczyk, L. Aggarwal | Summary: We report a measurement of the $D^0$ and $D^+$ lifetimes using $D^0to K^-pi^+$ and $D^+to K^-pi^+pi^+$ decays reconstructed in $e^+e^-to cbar{c}$ data recorded by the Belle II experiment at the SuperKEKB asymmetric-energy $e^+e^-$ collider. […]
Kavli Affiliate: E. P. S. Shellard | First 5 Authors: C. J. A. P. Martins, Patrick Peter, I. Yu. Rybak, E. P. S. Shellard, | Summary: We apply a recently developed formalism to study the evolution of a current-carrying string network under the simple but generic assumption of a linear equation of state. We demonstrate […]
Kavli Affiliate: Deepto Chakrabarty | First 5 Authors: Teruaki Enoto, Mason Ng, Chin-ping Hu, Tolga Guver, Gaurava K. Jaisawal | Summary: The soft gamma-ray repeater Swift J1555.2-5402 was discovered by means of a 12-ms duration short burst detected with Swift BAT on 2021 June 3. Then 1.6 hours after the first burst detection, NICER started […]
Kavli Affiliate: Jia Liu | First 5 Authors: Menglu Yu, Jia Liu, Chuan Wu, Bo Ji, Elizabeth S. Bentley | Summary: Recent years have witnessed a rapid growth of distributed machine learning (ML) frameworks, which exploit the massive parallelism of computing clusters to expedite ML training. However, the proliferation of distributed ML frameworks also introduces […]
Kavli Affiliate: Marcela Carena | First 5 Authors: Marcela Carena, Nina M. Coyle, Ying-Ying Li, Samuel D. McDermott, Yuhsin Tsai | Summary: Dark matter (DM) with a mass below a few keV must have a phase space distribution that differs substantially from the Standard Model particle thermal phase space: otherwise, it will free stream out […]