The life cycle of stars and their planets from the high energy perspective

Kavli Affiliate: David A. Principe | First 5 Authors: Lia Corrales, Keivan G. Stassun, Tim Cunningham, Girish Duvvuri, Jeremy J. Drake | Summary: One of the key research themes identified by the Astro2020 decadal survey is Worlds and Suns in Context. The Advanced X-ray Imaging Satellite (AXIS) is a proposed NASA APEX mission that will […]


Continue.. The life cycle of stars and their planets from the high energy perspective

Prospects for Time-Domain and Multi-Messenger Science with AXIS

Kavli Affiliate: Erin Kara | First 5 Authors: The AXIS Time-Domain, Multi-Messenger Science Working Group, :, Riccardo Arcodia, Franz E. Bauer | Summary: The Advanced X-ray Imaging Satellite (AXIS) promises revolutionary science in the X-ray and multi-messenger time domain. AXIS will leverage excellent spatial resolution (<1.5 arcsec), sensitivity (80x that of Swift), and a large […]


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TESS Giants Transiting Giants V — Two hot Jupiters orbiting red-giant hosts

Kavli Affiliate: Sara Seager | First 5 Authors: Filipe Pereira, Samuel K. Grunblatt, Angelica Psaridi, Tiago L. Campante, Margarida S. Cunha | Summary: In this work we present the discovery and confirmation of two hot Jupiters orbiting red-giant stars, TOI-4377 b and TOI-4551 b, observed by TESS in the southern ecliptic hemisphere and later followed-up […]


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Highly Significant Detection of X-Ray Polarization from the Brightest Accreting Neutron Star Sco X-1

Kavli Affiliate: Herman L. Marshall | First 5 Authors: Fabio La Monaca, Alessandro Di Marco, Juri Poutanen, Matteo Bachetti, Sara E. Motta | Summary: The Imaging X-ray Polarimetry Explorer measured with high significance the X-ray polarization of the brightest Z-source Sco X-1, resulting in the nominal 2-8 keV energy band in a polarization degree of […]


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Modeling the Morphology of Fast Radio Bursts and Radio Pulsars with fitburst

Kavli Affiliate: Kiyoshi W. Masui | First 5 Authors: Emmanuel Fonseca, Ziggy Pleunis, Daniela Breitman, Ketan R. Sand, Bikash Kharel | Summary: We present a framework for modeling astrophysical pulses from radio pulsars and fast radio bursts (FRBs). This framework, called fitburst, generates synthetic representations of dynamic spectra that are functions of several physical and […]


Continue.. Modeling the Morphology of Fast Radio Bursts and Radio Pulsars with fitburst

Modeling the Morphology of Fast Radio Bursts and Radio Pulsars with fitburst

Kavli Affiliate: Kiyoshi W. Masui | First 5 Authors: Emmanuel Fonseca, Ziggy Pleunis, Daniela Breitman, Ketan R. Sand, Bikash Kharel | Summary: We present a framework for modeling astrophysical pulses from radio pulsars and fast radio bursts (FRBs). This framework, called fitburst, generates synthetic representations of dynamic spectra that are functions of several physical and […]


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Tracking the X-ray Polarization of the Black Hole Transient Swift J1727.8-1613 during a State Transition

Kavli Affiliate: Herman L. Marshall | First 5 Authors: Adam Ingram, Niek Bollemeijer, Alexandra Veledina, Michal Dovciak, Juri Poutanen | Summary: We report on a campaign on the bright black hole X-ray binary Swift J1727.8$-$1613 centered around five observations by the Imaging X-ray Polarimetry Explorer (IXPE). This is the first time it has been possible […]


Continue.. Tracking the X-ray Polarization of the Black Hole Transient Swift J1727.8-1613 during a State Transition

Tracking the X-ray Polarization of the Black Hole Transient Swift J1727.8-1613 during a State Transition

Kavli Affiliate: Herman L. Marshall | First 5 Authors: Adam Ingram, Niek Bollemeijer, Alexandra Veledina, Michal Dovciak, Juri Poutanen | Summary: We report on an observational campaign on the bright black hole X-ray binary Swift J1727.8$-$1613 centered around five observations by the Imaging X-ray Polarimetry Explorer (IXPE). These observations track for the first time the […]


Continue.. Tracking the X-ray Polarization of the Black Hole Transient Swift J1727.8-1613 during a State Transition

The Strength and Variability of the Helium 10830 Å Triplet in Young Stars, with Implications for Exosphere Detection

Kavli Affiliate: Andrew Vanderburg | First 5 Authors: Daniel M. Krolikowski, Adam L. Kraus, Benjamin M. Tofflemire, Caroline V. Morley, Andrew W. Mann | Summary: Young exoplanets trace planetary evolution, particularly the atmospheric mass loss that is most dynamic in youth. However, the high activity level of young stars can mask or mimic the spectroscopic […]


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The High Energy X-ray Probe (HEX-P): resolving the nature of Sgr A* flares, compact object binaries and diffuse X-ray emission in the Galactic Center and beyond

Kavli Affiliate: Melania Nynka | First 5 Authors: Kaya Mori, Gabriele Ponti, Matteo Bachetti, Arash Bodaghee, Jonathan Grindlay | Summary: HEX-P is a probe-class mission concept that will combine high spatial resolution X-ray imaging ($<10"$ FWHM) and broad spectral coverage (0.2-80 keV) with an effective area far superior to current facilities’ (including XMM-Newton and NuSTAR). […]


Continue.. The High Energy X-ray Probe (HEX-P): resolving the nature of Sgr A* flares, compact object binaries and diffuse X-ray emission in the Galactic Center and beyond