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Effects of radiation pressure on the evaporative wind of HD 209458b
Murray-Clay, Ruth; Frank, Adam; Fossati, Luca +4 more
The role of radiation pressure in shaping exoplanet photoevaporation remains a topic of contention. Radiation pressure from the exoplanet's host star has been proposed as a mechanism to drive the escaping atmosphere into a 'cometary' tail and explain the high velocities observed in systems where mass-loss is occurring. In this paper, we present re…
Resolving the Crab pulsar wind nebula at teraelectronvolt energies
H. E. S. S. Collaboration
The Crab nebula is one of the most-studied cosmic particle accelerators, shining brightly across the entire electromagnetic spectrum up to very-high-energy gamma rays1,2. It is known from observations in the radio to gamma-ray part of the spectrum that the nebula is powered by a pulsar, which converts most of its rotational energy losse…
deepCR: Cosmic Ray Rejection with Deep Learning
Zhang, Keming; Bloom, Joshua S.
Cosmic ray (CR) identification and replacement are critical components of imaging and spectroscopic reduction pipelines involving solid-state detectors. We present deepCR, a deep-learning-based framework for CR identification and subsequent image inpainting based on the predicted CR mask. To demonstrate the effectiveness of this framework, we trai…
Large-scale CO Spiral Arms and Complex Kinematics Associated with the T Tauri Star RU Lup
Wilner, David J.; Andrews, Sean M.; Huang, Jane +9 more
While protoplanetary disks often appear to be compact and well organized in millimeter continuum emission, CO spectral line observations are increasingly revealing complex behavior at large distances from the host star. We present deep Atacama Large Millimeter/submillimeter Array maps of the J = 2-1 transition of 12CO, 13CO, …
The Hubble Space Telescope PanCET Program: An Optical to Infrared Transmission Spectrum of HAT-P-32Ab
Nikolov, Nikolay; Mikal-Evans, Thomas; Sing, David K. +14 more
We present a 0.3-5 µm transmission spectrum of the hot Jupiter HAT-P-32Ab observed with the Space Telescope Imaging Spectrograph and Wide Field Camera 3 instruments mounted on the Hubble Space Telescope, combined with Spitzer Infrared Array Camera photometry. The spectrum is composed of 51 spectrophotometric bins with widths ranging between …
Integral Field Spectroscopy of Fast Outflows in Dwarf Galaxies with AGNs
Veilleux, Sylvain; Liu, Weizhe; Bohn, Thomas +4 more
Feedback likely plays a vital role in the formation of dwarf galaxies. While stellar processes have long been considered the main source of feedback, recent studies have revealed tantalizing signs of active galactic nucleus (AGN) feedback in dwarf galaxies. In this paper, we report the results from an integral field spectroscopic study of a sample…
Impact of polarised extragalactic sources on the measurement of CMB B-mode anisotropies
Lagache, G.; Montier, L.; Tucci, M. +2 more
One of the main goals of cosmology is to search for the imprint of primordial gravitational waves in the polarisation filed of the cosmic microwave background to probe inflation theories. One of the obstacles in detecting the primordial signal is that the cosmic microwave background B-mode polarisation must be extracted from among astrophysical co…
Distances and Statistics of Local Molecular Clouds in the First Galactic Quadrant
Su, Yang; Yan, Qing-Zeng; Sun, Yan +2 more
We present an analysis of local molecular clouds ( $-6\lt {V}_{\mathrm{LSR}}\lt 30$ km s-1, i.e., <1.5 kpc) in the first Galactic quadrant ( $25\buildrel{\circ}\over{.} 8\lt l\lt 49\buildrel{\circ}\over{.} 7$ and $| b| \lt 5^\circ $ ), a pilot region of the Milky Way Imaging Scroll Painting (MWISP) CO survey. Using the Spectral Clust…
Search for Optically Dark Infrared Galaxies without Counterparts of Subaru Hyper Suprime-Cam in the AKARI North Ecliptic Pole Wide Survey Field
Momose, Rieko; Hashimoto, Tetsuya; Goto, Tomotsugu +25 more
We present the physical properties of AKARI sources without optical counterparts in optical images from the Hyper Suprime-Cam (HSC) on the Subaru telescope. Using the AKARI infrared (IR) source catalog and HSC optical catalog, we select 583 objects that do not have HSC counterparts in the AKARI North Ecliptic Pole wide survey field (∼5 deg2
Swift-XRT follow-up of gravitational wave triggers during the third aLIGO/Virgo observing run
Troja, E.; Cenko, S. B.; Sakamoto, T. +41 more
The Neil Gehrels Swift Observatory followed up 18 gravitational wave (GW) triggers from the LIGO/Virgo collaboration during the O3 observing run in 2019/2020, performing approximately 6500 pointings in total. Of these events, four were finally classified (if real) as binary black hole (BH) triggers, six as binary neutron star (NS) events, two each…