Relativistic X-ray reverberation from super-Eddington accretion flow

Kavli Affiliate: Erin Kara | First 5 Authors: Lars Lund Thomsen, Jane Lixin Dai, Erin Kara, Chris Reynolds, | Summary: X-ray reverberation is a powerful technique which maps out the structure of the inner regions of accretion disks around black holes using the echoes of the coronal emission reflected by the disk. While the theory […]


Continue.. Relativistic X-ray reverberation from super-Eddington accretion flow

The TESS Mission Target Selection Procedure

Kavli Affiliate: Christopher J. Burke | First 5 Authors: Michael Fausnaugh, Ed Morgan, Roland Vanderspek, Joshua Pepper, Christopher J. Burke | Summary: We describe the target selection procedure by which stars are selected for 2-minute and 20-second observations by TESS. We first list the technical requirements of the TESS instrument and ground systems processing that […]


Continue.. The TESS Mission Target Selection Procedure

Calibration of the MaGIXS experiment II: Flight Instrument Calibration

Kavli Affiliate: Ralf K. Heilmann | First 5 Authors: P. S. Athiray, Amy R. Winebarger, Patrick Champey, Ken Kobayashi, Sabrina Savage | Summary: The Marshall Grazing Incidence X-ray Spectrometer (MaGIXS) is a sounding rocket experiment that observes the soft X-ray spectrum of the Sun from 6.0 – 24 Angstrom (0.5 – 2.0 keV), successfully launched […]


Continue.. Calibration of the MaGIXS experiment II: Flight Instrument Calibration

Calibration of the MaGIXS experiment II: Flight Instrument Calibration

Kavli Affiliate: Ralf K. Heilmann | First 5 Authors: P. S. Athiray, Amy R. Winebarger, Patrick Champey, Ken Kobayashi, Sabrina Savage | Summary: The Marshall Grazing Incidence X-ray Spectrometer (MaGIXS) is a sounding rocket experiment that observes the soft X-ray spectrum of the Sun from 6.0 – 24 Angstrom (0.5 – 2.0 keV), successfully launched […]


Continue.. Calibration of the MaGIXS experiment II: Flight Instrument Calibration

Three roads to the geometric constraint formulation of gravitational theories with boundaries

Kavli Affiliate: J. S. Villasenor | First 5 Authors: Fernando Barbero, Marc Basquens, Valle Varo, Eduardo J. S. Villaseñor, | Summary: The Hamiltonian description of mechanical or field models defined by singular Lagrangians plays a central role in physics. A number of methods are known for this purpose, the most popular of them being the […]


Continue.. Three roads to the geometric constraint formulation of gravitational theories with boundaries

Machine-Learning media bias

Kavli Affiliate: Max Tegmark | First 5 Authors: Samantha D’Alonzo, Max Tegmark, , , | Summary: We present an automated method for measuring media bias. Inferring which newspaper published a given article, based only on the frequencies with which it uses different phrases, leads to a conditional probability distribution whose analysis lets us automatically map […]


Continue.. Machine-Learning media bias

Concordance: In-flight Calibration of X-ray Telescopes without Absolute References

Kavli Affiliate: Herman L. Marshall | First 5 Authors: Herman L. Marshall, Yang Chen, Jeremy J. Drake, Matteo Guainazzi, Vinay L. Kashyap | Summary: We describe a process for cross-calibrating the effective areas of X-ray telescopes that observe common targets. The targets are not assumed to be "standard candles" in the classic sense, in that […]


Continue.. Concordance: In-flight Calibration of X-ray Telescopes without Absolute References

TOI-1518b: A Misaligned Ultra-hot Jupiter with Iron in its Atmosphere

Kavli Affiliate: Edward H. Morgan | First 5 Authors: Samuel H. C. Cabot, Aaron Bello-Arufe, João M. Mendonça, René Tronsgaard, Ian Wong | Summary: We present the discovery of TOI-1518b — an ultra-hot Jupiter orbiting a bright star $V = 8.95$. The transiting planet is confirmed using high-resolution optical transmission spectra from EXPRES. It is […]


Continue.. TOI-1518b: A Misaligned Ultra-hot Jupiter with Iron in its Atmosphere

Estimating the effective lifetime of the $zsim6$ quasar population from the composite proximity zone profile

Kavli Affiliate: Robert A. Simcoe | First 5 Authors: Karna A. Morey, Anna-Christina Eilers, Frederick B. Davies, Joseph F. Hennawi, Robert A. Simcoe | Summary: The lifetime of quasars can be estimated by means of their proximity zone sizes, which are regions of enhanced flux bluewards of the Lyman-$alpha$ emission line observed in the rest-frame […]


Continue.. Estimating the effective lifetime of the $zsim6$ quasar population from the composite proximity zone profile