Wide Binary Orbits are Preferentially Aligned with the Orbits of Small Planets, but Probably Not Hot Jupiters

Kavli Affiliate: Andrew Vanderburg | First 5 Authors: Sam Christian, Andrew Vanderburg, Juliette Becker, Adam L. Kraus, Logan Pearce | Summary: Studying the relative orientations of the orbits of exoplanets and wide-orbiting binary companions (semimajor axis greater than 100 AU) can shed light on how planets form and evolve in binary systems. Previous observations by […]


Continue.. Wide Binary Orbits are Preferentially Aligned with the Orbits of Small Planets, but Probably Not Hot Jupiters

Occurrence Rates of Exosatellites Orbiting 3-30M$_{rm Jup}$ Hosts from 44 Spitzer Light Curves

Kavli Affiliate: Andrew Vanderburg | First 5 Authors: Mary Anne Limbach, Johanna M. Vos, Andrew Vanderburg, Fei Dai, | Summary: We conduct a comprehensive search for transiting exomoons and exosatellites within 44 archival Spitzer light curves of 32 substellar worlds with estimated masses ranging between 3-30M$_{rm Jup}$. This sample’s median host mass is 16M$_{rm Jup}$, […]


Continue.. Occurrence Rates of Exosatellites Orbiting 3-30M$_{rm Jup}$ Hosts from 44 Spitzer Light Curves

Studying geometry of the ultraluminous X-ray pulsar Swift J0243.6+6124 using X-ray and optical polarimetry

Kavli Affiliate: Herman L. Marshall | First 5 Authors: Juri Poutanen, Sergey S. Tsygankov, Victor Doroshenko, Sofia V. Forsblom, Peter Jenke | Summary: Discovery of pulsations from a number of ultra-luminous X-ray (ULX) sources proved that accretion onto neutron stars can produce luminosities exceeding the Eddington limit by a couple of orders of magnitude. The […]


Continue.. Studying geometry of the ultraluminous X-ray pulsar Swift J0243.6+6124 using X-ray and optical polarimetry

The oldest stars with low neutron-capture element abundances and origins in ancient dwarf galaxies

Kavli Affiliate: Anna Frebel | First 5 Authors: Hillary Diane Andales, Ananda Santos Figueiredo, Casey Gordon Fienberg, Mohammad K. Mardini, Anna Frebel | Summary: We present a detailed chemical abundance and kinematic analysis of six extremely metal-poor ($-4.2 leq$ [Fe/H] $leq-$2.9) halo stars with very low neutron-capture abundances ([Sr/H] and [Ba/H]) based on high-resolution Magellan/MIKE […]


Continue.. The oldest stars with low neutron-capture element abundances and origins in ancient dwarf galaxies

Long term variability of Cygnus X-1. VIII. A spectral-timing look at low energies with NICER

Kavli Affiliate: Erin Kara | First 5 Authors: Ole König, Guglielmo Mastroserio, Thomas Dauser, Mariano Méndez, Jingyi Wang | Summary: The Neutron Star Interior Composition Explorer (NICER) monitoring campaign of Cyg X-1 allows us to study its spectral-timing behavior at energies ${<}1$ keV across all states. The hard state power spectrum can be decomposed into […]


Continue.. Long term variability of Cygnus X-1. VIII. A spectral-timing look at low energies with NICER

A systematic study of the ultra-fast outflow responses to luminosity variations in active galactic nuclei

Kavli Affiliate: Erin Kara | First 5 Authors: Yerong Xu, Ciro Pinto, Daniele Rogantini, Didier Barret, Stefano Bianchi | Summary: The extreme velocities and high ionization states of ultra-fast outflows (UFOs) make them a promising candidate for AGN feedback on the evolution of the host galaxy. However, their exact underlying driving mechanism is not yet […]


Continue.. A systematic study of the ultra-fast outflow responses to luminosity variations in active galactic nuclei

TOI-2447 b / NGTS-29 b: a 69-day Saturn around a Solar analogue

Kavli Affiliate: Sara Seager | First 5 Authors: Samuel Gill, Daniel Bayliss, Solène Ulmer-Moll, Peter J. Wheatley, Rafael Brahm | Summary: Discovering transiting exoplanets with relatively long orbital periods ($>$10 days) is crucial to facilitate the study of cool exoplanet atmospheres ($T_{rm eq} < 700 K$) and to understand exoplanet formation and inward migration further […]


Continue.. TOI-2447 b / NGTS-29 b: a 69-day Saturn around a Solar analogue

Towards Guaranteed Safe AI: A Framework for Ensuring Robust and Reliable AI Systems

Kavli Affiliate: Max Tegmark | First 5 Authors: David “davidad” Dalrymple, Joar Skalse, Yoshua Bengio, Stuart Russell, Max Tegmark | Summary: Ensuring that AI systems reliably and robustly avoid harmful or dangerous behaviours is a crucial challenge, especially for AI systems with a high degree of autonomy and general intelligence, or systems used in safety-critical […]


Continue.. Towards Guaranteed Safe AI: A Framework for Ensuring Robust and Reliable AI Systems

Towards Guaranteed Safe AI: A Framework for Ensuring Robust and Reliable AI Systems

Kavli Affiliate: Max Tegmark | First 5 Authors: David “davidad” Dalrymple, Joar Skalse, Yoshua Bengio, Stuart Russell, Max Tegmark | Summary: Ensuring that AI systems reliably and robustly avoid harmful or dangerous behaviours is a crucial challenge, especially for AI systems with a high degree of autonomy and general intelligence, or systems used in safety-critical […]


Continue.. Towards Guaranteed Safe AI: A Framework for Ensuring Robust and Reliable AI Systems

Advancing Precision Particle Background Estimation for Future X-ray Missions: Correlated Variability between AMS and Chandra/XMM-Newton

Kavli Affiliate: Eric D. Miller | First 5 Authors: Arnab Sarkar, Catherine E. Grant, Eric D. Miller, Mark Bautz, Benjamin Schneider | Summary: Galactic cosmic ray (GCR) particles have a significant impact on the particle-induced background of X-ray observatories, and their flux exhibits substantial temporal variability, potentially influencing background levels. In this study, we present […]


Continue.. Advancing Precision Particle Background Estimation for Future X-ray Missions: Correlated Variability between AMS and Chandra/XMM-Newton