A broadband thermal emission spectrum of the ultra-hot Jupiter WASP-18b

Kavli Affiliate: Avi Shporer | First 5 Authors: [#item_custom_name[1]], [#item_custom_name[2]], [#item_custom_name[3]], [#item_custom_name[4]], [#item_custom_name[5]] | Summary: Close-in giant exoplanets with temperatures greater than 2,000 K (”ultra-hot Jupiters”) have been the subject of extensive efforts to determine their atmospheric properties using thermal emission measurements from the Hubble and Spitzer Space Telescopes. However, previous studies have yielded inconsistent […]


Continue.. A broadband thermal emission spectrum of the ultra-hot Jupiter WASP-18b

Characterization of a set of small planets with TESS and CHEOPS and an analysis of photometric performance

Kavli Affiliate: Sara Seager | First 5 Authors: [#item_custom_name[1]], [#item_custom_name[2]], [#item_custom_name[3]], [#item_custom_name[4]], [#item_custom_name[5]] | Summary: The radius valley carries implications for how the atmospheres of small planets form and evolve, but this feature is only visible with highly-precise characterizations of many small planets. We present the characterization of 9 planets and one planet candidate with […]


Continue.. Characterization of a set of small planets with TESS and CHEOPS and an analysis of photometric performance

From X-rays to physical parameters: a comprehensive analysis of thermal tidal disruption event X-ray spectra

Kavli Affiliate: Dheeraj Pasham | First 5 Authors: [#item_custom_name[1]], [#item_custom_name[2]], [#item_custom_name[3]], [#item_custom_name[4]], [#item_custom_name[5]] | 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 of parameter space […]


Continue.. From X-rays to physical parameters: a comprehensive analysis of thermal tidal disruption event X-ray spectra

X-ray polarimetry reveals the magnetic field topology on sub-parsec scales in Tycho’s supernova remnant

Kavli Affiliate: Herman L. Marshall | First 5 Authors: [#item_custom_name[1]], [#item_custom_name[2]], [#item_custom_name[3]], [#item_custom_name[4]], [#item_custom_name[5]] | Summary: Supernova remnants are commonly considered to produce most of the Galactic cosmic rays via diffusive shock acceleration. However, many questions about the physical conditions at shock fronts, such as the magnetic-field morphology close to the particle acceleration sites, remain […]


Continue.. X-ray polarimetry reveals the magnetic field topology on sub-parsec scales in Tycho’s supernova remnant

A Framework for Modeling Polycyclic Aromatic Hydrocarbon Emission in Galaxy Evolution Simulations

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: [#item_custom_name[1]], [#item_custom_name[2]], [#item_custom_name[3]], [#item_custom_name[4]], [#item_custom_name[5]] | Summary: We present a new methodology for simulating mid-infrared emission from polycyclic aromatic hydrocarbons (PAHs) in galaxy evolution simulations. To do this, we combine theoretical models of PAH emission features as they respond to varying interstellar radiation fields, grain size distributions, […]


Continue.. A Framework for Modeling Polycyclic Aromatic Hydrocarbon Emission in Galaxy Evolution Simulations

A Second Earth-Sized Planet in the Habitable Zone of the M Dwarf, TOI-700

Kavli Affiliate: Andrew Vanderburg | First 5 Authors: [#item_custom_name[1]], [#item_custom_name[2]], [#item_custom_name[3]], [#item_custom_name[4]], [#item_custom_name[5]] | Summary: We report the discovery of TOI-700 e, a 0.95 R$_oplus$ planet residing in the Optimistic Habitable Zone (HZ) of its host star. This discovery was enabled by multiple years of monitoring from NASA’s Transiting Exoplanet Survey Satellite (TESS) mission. The […]


Continue.. A Second Earth-Sized Planet in the Habitable Zone of the M Dwarf, TOI-700

An FRB Sent Me a DM: Constraining the Electron Column of the Milky Way Halo with Fast Radio Burst Dispersion Measures from CHIME/FRB

Kavli Affiliate: Kiyoshi W. Masui | First 5 Authors: [#item_custom_name[1]], [#item_custom_name[2]], [#item_custom_name[3]], [#item_custom_name[4]], [#item_custom_name[5]] | Summary: The CHIME/FRB project has detected hundreds of fast radio bursts (FRBs), providing an unparalleled population to probe statistically the foreground media that they illuminate. One such foreground medium is the ionized halo of the Milky Way (MW). We estimate […]


Continue.. An FRB Sent Me a DM: Constraining the Electron Column of the Milky Way Halo with Fast Radio Burst Dispersion Measures from CHIME/FRB

The IXPE view of GRB 221009A

Kavli Affiliate: Herman L. Marshall | First 5 Authors: [#item_custom_name[1]], [#item_custom_name[2]], [#item_custom_name[3]], [#item_custom_name[4]], [#item_custom_name[5]] | Summary: We present the IXPE observation of GRB 221009A which includes upper limits on the linear polarization degree of both prompt and afterglow emission in the soft X-ray energy band. GRB 221009A is an exceptionally bright gamma-ray burst (GRB) that […]


Continue.. The IXPE view of GRB 221009A

White dwarf — red giant star binaries as Type Ia supernova progenitors: with and without magnetic confinement

Kavli Affiliate: Saul A. Rappaport | First 5 Authors: [#item_custom_name[1]], [#item_custom_name[2]], [#item_custom_name[3]], [#item_custom_name[4]], [#item_custom_name[5]] | Summary: Various white-dwarf (WD) binary scenarios have been proposed trying to understand the nature and the diversity of Type Ia supernovae (SNe Ia). In this work, we study the evolution of carbon-oxygen WD — red giant (RG) binaries (including the […]


Continue.. White dwarf — red giant star binaries as Type Ia supernova progenitors: with and without magnetic confinement

Identifying Exoplanets with Deep Learning. V. Improved Light Curve Classification for TESS Full Frame Image Observations

Kavli Affiliate: Andrew Vanderburg | First 5 Authors: [#item_custom_name[1]], [#item_custom_name[2]], [#item_custom_name[3]], [#item_custom_name[4]], [#item_custom_name[5]] | Summary: The TESS mission produces a large amount of time series data, only a small fraction of which contain detectable exoplanetary transit signals. Deep learning techniques such as neural networks have proved effective at differentiating promising astrophysical eclipsing candidates from other […]


Continue.. Identifying Exoplanets with Deep Learning. V. Improved Light Curve Classification for TESS Full Frame Image Observations