Polarization properties of 128 non-repeating fast radio bursts from the first CHIME/FRB baseband catalog

Kavli Affiliate: Kiyoshi W. Masui | First 5 Authors: Ayush Pandhi, Ziggy Pleunis, Ryan Mckinven, B. M. Gaensler, Jianing Su | Summary: We present a 400-800 MHz polarimetric analysis of 128 non-repeating fast radio bursts (FRBs) from the first CHIME/FRB baseband catalog, increasing the total number of FRB sources with polarization properties by a factor […]


Continue.. Polarization properties of 128 non-repeating fast radio bursts from the first CHIME/FRB baseband catalog

AT2019pim: A Luminous Orphan Afterglow from a Moderately Relativistic Outflow

Kavli Affiliate: Michael Fausnaugh | First 5 Authors: Daniel A. Perley, Anna Y. Q. Ho, Michael Fausnaugh, Gavin P. Lamb, Mansi M. Kasliwal | Summary: Classical gamma-ray bursts (GRBs) have two distinct emission episodes: prompt emission from ultra-relativistic ejecta and afterglow from shocked circumstellar material. While both components are extremely luminous in known GRBs, a […]


Continue.. AT2019pim: A Luminous Orphan Afterglow from a Moderately Relativistic Outflow

AT2019pim: A Luminous Orphan Afterglow from a Moderately Relativistic Outflow

Kavli Affiliate: Michael Fausnaugh | First 5 Authors: Daniel A. Perley, Anna Y. Q. Ho, Michael Fausnaugh, Gavin P. Lamb, Mansi M. Kasliwal | Summary: Classical gamma-ray bursts (GRBs) have two distinct emission episodes: prompt emission from ultra-relativistic ejecta and afterglow from shocked circumstellar material. While both components are extremely luminous in known GRBs, a […]


Continue.. AT2019pim: A Luminous Orphan Afterglow from a Moderately Relativistic Outflow

AT2019pim: A Luminous Orphan Afterglow from a Moderately Relativistic Outflow

Kavli Affiliate: Michael Fausnaugh | First 5 Authors: Daniel A. Perley, Anna Y. Q. Ho, Michael Fausnaugh, Gavin P. Lamb, Mansi M. Kasliwal | Summary: Classical gamma-ray bursts (GRBs) have two distinct emission episodes: prompt emission from ultra-relativistic ejecta and afterglow from shocked circumstellar material. While both components are extremely luminous in known GRBs, a […]


Continue.. AT2019pim: A Luminous Orphan Afterglow from a Moderately Relativistic Outflow

Discovery of two warm mini-Neptunes with contrasting densities orbiting the young K3V star TOI-815

Kavli Affiliate: Sara Seager | First 5 Authors: Angelica Psaridi, Hugh Osborn, François Bouchy, Monika Lendl, Léna Parc | Summary: We present the discovery and characterization of two warm mini-Neptunes transiting the K3V star TOI-815 in a K-M binary system. Analysis of the spectra and rotation period reveal it to be a young star with […]


Continue.. Discovery of two warm mini-Neptunes with contrasting densities orbiting the young K3V star TOI-815

Discovering group dynamics in synchronous time series via hierarchical recurrent switching-state models

Kavli Affiliate: Eric Miller | First 5 Authors: Michael Wojnowicz, Preetish Rath, Eric Miller, Jeffrey Miller, Clifford Hancock | Summary: We seek to model a collection of time series arising from multiple entities interacting over the same time period. Recent work focused on modeling individual time series is inadequate for our intended applications, where collective […]


Continue.. Discovering group dynamics in synchronous time series via hierarchical recurrent switching-state models

Discovering group dynamics in coordinated time series via hierarchical recurrent switching-state models

Kavli Affiliate: Eric Miller | First 5 Authors: Michael T. Wojnowicz, Kaitlin Gili, Preetish Rath, Eric Miller, Jeffrey Miller | Summary: We seek a computationally efficient model for a collection of time series arising from multiple interacting entities (a.k.a. "agents"). Recent models of spatiotemporal patterns across individuals fail to incorporate explicit system-level collective behavior that […]


Continue.. Discovering group dynamics in coordinated time series via hierarchical recurrent switching-state models

Intensive Swift and LCO monitoring of PG 1302$-$102: AGN disk reverberation mapping of a supermassive black hole binary candidate

Kavli Affiliate: Erin Kara | First 5 Authors: Tingting Liu, Rick Edelson, Juan V. Hernández Santisteban, Erin Kara, John Montano | Summary: We present an intensive multiwavelength monitoring campaign of the quasar PG 1302$-$102 with Swift and the Las Cumbres Observatory network telescopes. At $zsim0.3$, it tests the limits of the reverberation mapping (RM) technique […]


Continue.. Intensive Swift and LCO monitoring of PG 1302$-$102: AGN disk reverberation mapping of a supermassive black hole binary candidate

Black-Box Access is Insufficient for Rigorous AI Audits

Kavli Affiliate: Max Tegmark | First 5 Authors: Stephen Casper, Carson Ezell, Charlotte Siegmann, Noam Kolt, Taylor Lynn Curtis | Summary: External audits of AI systems are increasingly recognized as a key mechanism for AI governance. The effectiveness of an audit, however, depends on the degree of system access granted to auditors. Recent audits of […]


Continue.. Black-Box Access is Insufficient for Rigorous AI Audits

Black-Box Access is Insufficient for Rigorous AI Audits

Kavli Affiliate: Max Tegmark | First 5 Authors: Stephen Casper, Carson Ezell, Charlotte Siegmann, Noam Kolt, Taylor Lynn Curtis | Summary: External audits of AI systems are increasingly recognized as a key mechanism for AI governance. The effectiveness of an audit, however, depends on the degree of access granted to auditors. Recent audits of state-of-the-art […]


Continue.. Black-Box Access is Insufficient for Rigorous AI Audits