Representing low mass black hole seeds in cosmological simulations: A new sub-grid stochastic seed model

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Aklant K Bhowmick, Laura Blecha, Paul Torrey, Rainer Weinberger, Luke Zoltan Kelley | Summary: The nature of the first seeds of supermassive black holes (SMBHs) is currently unknown, with postulated initial masses ranging from $sim10^5~M_{odot}$ to as low as $sim10^2~M_{odot}$. However, most existing cosmological simulations resolve BHs […]


Continue.. Representing low mass black hole seeds in cosmological simulations: A new sub-grid stochastic seed model

TOI-199 b: A well-characterized 100-day transiting warm giant planet with TTVs seen from Antarctica

Kavli Affiliate: Robert F. Goeke | First 5 Authors: Melissa J. Hobson, Trifon Trifonov, Thomas Henning, Andrés Jordán, Felipe Rojas | Summary: We present the spectroscopic confirmation and precise mass measurement of the warm giant planet TOI-199 b. This planet was first identified in TESS photometry and confirmed using ground-based photometry from ASTEP in Antarctica […]


Continue.. TOI-199 b: A well-characterized 100-day transiting warm giant planet with TTVs seen from Antarctica

TOI-199 b: A well-characterized 100-day transiting warm giant planet with TTVs seen from Antarctica

Kavli Affiliate: Robert F. Goeke | First 5 Authors: Melissa J. Hobson, Trifon Trifonov, Thomas Henning, Andrés Jordán, Felipe Rojas | Summary: We present the spectroscopic confirmation and precise mass measurement of the warm giant planet TOI-199 b. This planet was first identified in TESS photometry and confirmed using ground-based photometry from ASTEP in Antarctica […]


Continue.. TOI-199 b: A well-characterized 100-day transiting warm giant planet with TTVs seen from Antarctica

101 Eclipsing Quadruple Star Candidates Discovered in TESS Full Frame Images

Kavli Affiliate: Saul A. Rappaport | First 5 Authors: Veselin B. Kostov, Brian P. Powell, Saul A. Rappaport, Tamas Borkovits, Robert Gagliano | Summary: We present our second catalog of quadruple star candidates, containing 101 systems discovered in TESS Full-Frame Image data. The targets were initially detected as eclipsing binary stars with the help of […]


Continue.. 101 Eclipsing Quadruple Star Candidates Discovered in TESS Full Frame Images

101 Eclipsing Quadruple Star Candidates Discovered in TESS Full Frame Images

Kavli Affiliate: Saul A. Rappaport | First 5 Authors: Veselin B. Kostov, Brian P. Powell, Saul A. Rappaport, Tamas Borkovits, Robert Gagliano | Summary: We present our second catalog of quadruple star candidates, containing 101 systems discovered in TESS Full-Frame Image data. The targets were initially detected as eclipsing binary stars with the help of […]


Continue.. 101 Eclipsing Quadruple Star Candidates Discovered in TESS Full Frame Images

First X-ray polarization measurement confirms the low black-hole spin in LMC X-3

Kavli Affiliate: Herman L. Marshall | First 5 Authors: Jiří Svoboda, Michal Dovčiak, James F. Steiner, Fabio Muleri, Adam Ingram | Summary: X-ray polarization is a powerful tool to investigate the geometry of accreting material around black holes, allowing independent measurements of the black hole spin and orientation of the innermost parts of the accretion […]


Continue.. First X-ray polarization measurement confirms the low black-hole spin in LMC X-3

NICER observations of thermonuclear bursts from 4U 1728-34: Detection of oscillations prior to the onset of two bursts

Kavli Affiliate: Deepto Chakrabarty | First 5 Authors: Funda Bostanci, Tugba Boztepe, Tolga Guver, Tod E. Strohmayer, Yuri Cavecchi | Summary: We present temporal and time-resolved spectral analyses of all the thermonuclear X-ray bursts observed from the neutron star low-mass X-ray binary (LMXB) 4U 1728-34 with NICER from June 2017 to September 2019. In total, […]


Continue.. NICER observations of thermonuclear bursts from 4U 1728-34: Detection of oscillations prior to the onset of two bursts

Emergent Chern-Simons Interactions in 3+1 Dimensions

Kavli Affiliate: Frank Wilczek | First 5 Authors: Marcus Stålhammar, Darya Rudneva, Thors Hans Hansson, Frank Wilczek, | Summary: Parity violating superconductors can support a low-dimension local interaction that becomes, upon condensation, a purely spatial Chern-Simons term. Solutions to the resulting generalized London equations can be obtained from solutions of the ordinary London equations with […]


Continue.. Emergent Chern-Simons Interactions in 3+1 Dimensions

Emergent Chern-Simons Interactions in 3+1 Dimensions

Kavli Affiliate: Frank Wilczek | First 5 Authors: Marcus Stålhammar, Darya Rudneva, Thors Hans Hansson, Frank Wilczek, | Summary: Parity violating superconductors can support a low-dimension local interaction that becomes, upon condensation, a purely spatial Chern-Simons term. Solutions to the resulting generalized London equations can be obtained from solutions of the ordinary London equations with […]


Continue.. Emergent Chern-Simons Interactions in 3+1 Dimensions

TESS Spots a Super-Puff: The Remarkably Low Density of TOI-1420b

Kavli Affiliate: Sara Seager | First 5 Authors: Stephanie Yoshida, Shreyas Vissapragada, David W. Latham, Allyson Bieryla, Daniel P. Thorngren | Summary: We present the discovery of TOI-1420b, an exceptionally low-density ($rho = 0.08pm0.02$ g cm$^{-3}$) transiting planet in a $P = 6.96$ day orbit around a late G dwarf star. Using transit observations from […]


Continue.. TESS Spots a Super-Puff: The Remarkably Low Density of TOI-1420b