On the robustness of the velocity anisotropy parameter in probing the stellar kinematics in Milky Way like galaxies: Take away from TNG50 simulation

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Razieh Emami, Lars Hernquist, Mark Vogelsberger, Xuejian Shen, Joshua S. Speagle | Summary: We analyze the velocity anisotropy of stars in real and energy space for a sample of Milky Way-like galaxies in the TNG50 simulation. We employ different selection criteria, including spatial, kinematic and metallicity cuts, […]


Continue.. On the robustness of the velocity anisotropy parameter in probing the stellar kinematics in Milky Way like galaxies: Take away from TNG50 simulation

97 Eclipsing Quadruple Star Candidates Discovered in TESS Full Frame Images

Kavli Affiliate: Andrew Vanderburg | First 5 Authors: Veselin B. Kostov, Brian P. Powell, Saul A. Rappaport, Tamas Borkovits, Robert Gagliano | Summary: We present a catalog of 97 uniformly-vetted candidates for quadruple star systems. The candidates were identified in TESS Full Frame Image data from Sectors 1 through 42 through a combination of machine […]


Continue.. 97 Eclipsing Quadruple Star Candidates Discovered in TESS Full Frame Images

The origin of the unfocused XMM-Newton background, its variability and lessons learned for ATHENA

Kavli Affiliate: Catherine E. Grant | First 5 Authors: Fabio Gastaldello, Martino Marelli, Silvano Molendi, Iacopo Bartalucci, Patrick Kühl | Summary: We analyzed the unexposed to the sky outFOV region of the MOS2 detector on board XMM-Newton covering 15 years of data amounting to 255 Ms. We show convincing evidence that the origin of the […]


Continue.. The origin of the unfocused XMM-Newton background, its variability and lessons learned for ATHENA

The impact of galaxy selection on the splashback boundaries of galaxy clusters

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Stephanie O’Neil, Josh Borrow, Mark Vogelsberger, Benedikt Diemer, | Summary: We explore how the splashback radius ($R_{rm sp}$) of galaxy clusters, measured using the number density of the subhalo population, changes based on various selection criteria using the IllustrisTNG cosmological galaxy formation simulation. We identify $R_{rm sp}$ […]


Continue.. The impact of galaxy selection on the splashback boundaries of galaxy clusters

Predicting the Exoplanet Yield of the TESS Prime and Extended Missions Through Years 1-7

Kavli Affiliate: Roland Vanderspek | First 5 Authors: Michelle Kunimoto, Joshua N. Winn, George R. Ricker, Roland Vanderspek, | Summary: The Transiting Exoplanet Survey Satellite (TESS) has discovered $sim$5000 planets and planet candidates after three and a half years of observations. With a planned second Extended Mission spanning Years 5 – 7 on the horizon, […]


Continue.. Predicting the Exoplanet Yield of the TESS Prime and Extended Missions Through Years 1-7

Exceptional dynamics of interacting spin liquids

Kavli Affiliate: Frank Wilczek | First 5 Authors: Kang Yang, Daniel Varjas, Emil J. Bergholtz, Sid Morampudi, Frank Wilczek | Summary: We show that interactions in quantum spin liquids can result in non-Hermitian phenomenology that differs qualitatively from mean-field expectations. We demonstrate this in two prominent cases through the effects of phonons and disorder on […]


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Detection of Cosmological 21 cm Emission with the Canadian Hydrogen Intensity Mapping Experiment

Kavli Affiliate: Kiyoshi Masui | First 5 Authors: CHIME Collaboration, Mandana Amiri, Kevin Bandura, Tianyue Chen, Meiling Deng | Summary: We present a detection of 21-cm emission from large-scale structure (LSS) between redshift 0.78 and 1.43 made with the Canadian Hydrogen Intensity Mapping Experiment (CHIME). Radio observations acquired over 102 nights are used to construct […]


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A transiting, temperate mini-Neptune orbiting the M dwarf TOI-1759 unveiled by TESS

Kavli Affiliate: Sara Seager | First 5 Authors: Néstor Espinoza, Enric Pallé, Jonas Kemmer, Rafael Luque, José A. Caballero | Summary: We report the discovery and characterization of TOI-1759~b, a temperate (400 K) sub-Neptune-sized exoplanet orbiting the M~dwarf TOI-1759 (TIC 408636441). TOI-1759 b was observed by TESS to transit on sectors 16, 17 and 24, […]


Continue.. A transiting, temperate mini-Neptune orbiting the M dwarf TOI-1759 unveiled by TESS

Mitigating the effects of particle background on the Athena Wide-Field Imager

Kavli Affiliate: Catherine E. Grant | First 5 Authors: Eric D. Miller, Catherine E. Grant, Marshall W. Bautz, Silvano Molendi, Ralph Kraft | Summary: The Wide Field Imager (WFI) flying on Athena will usher in the next era of studying the hot and energetic Universe. WFI observations of faint, diffuse sources will be limited by […]


Continue.. Mitigating the effects of particle background on the Athena Wide-Field Imager