output
19912026
Showing 2021Show all

475 papers · 1 filter

astro-ph.EP2021★ 19 cited

Has the impact flux of small and large asteroids varied through time on Mars, the Earth and the Moon?

Anthony Lagain, Mikhail Kreslavsky, David Baratoux +6

The impact flux over the last 3 Ga in the inner Solar System is commonly assumed to be constant through time. However, asteroid break-up events in the main belt may have been respo…

cs.LG2021★ 5 cited

Unintended Selection: Persistent Qualification Rate Disparities and Interventions

Reilly Raab, Yang Liu

Realistically -- and equitably -- modeling the dynamics of group-level disparities in machine learning remains an open problem. In particular, we desire models that do not suppose…

astro-ph.HE2021★ 13 cited

Follow-up Observations of the Prolonged, super-Eddington, Tidal Disruption Event Candidate 3XMM~J150052.0+015452: the Slow Decline Continues

Dacheng Lin, Olivier Godet, Natalie A. Webb +7

The X-ray source 3XMM~J150052.0+015452 was discovered as a spectacular tidal disruption event candidate during a prolonged ( yrs) outburst (Lin et al. 2017). It exhibited uniq…

eess.SY2021★ 20 cited

Robust interaction control of a dielectric elastomer actuator with variable stiffness

Gianluca Rizzello, Francesco Ferrante, David Naso +1

This paper presents an interaction control algorithm for a dielectric elastomer membrane actuator. The proposed method permits efficient exploitation of the controllable stiffness…

astro-ph.HE2021★ 31 cited

A Carbon/Oxygen-dominated Atmosphere Days After Explosion for the "Super-Chandrasekhar" Type Ia SN 2020esm

Georgios Dimitriadis, Ryan J. Foley, Nikki Arendse +18

Seeing pristine material from the donor star in a Type Ia supernova (SN Ia) explosion can reveal the nature of the binary system. In this paper, we present photometric and spectros…

hep-ph2021★ 12 cited

Loopy Determinations of and

Wolfgang Altmannshofer, Nathan Lewis

We use loop induced processes like meson oscillations and rare b hadron decays to determine the absolute values of the CKM matrix elements and and compare our…

astro-ph.CO2021★ 8 cited

Type Ia Supernova Magnitude Step from the local Dark Matter Environment

Heinrich Steigerwald, Davi Rodrigues, Stefano Profumo +1

Residuals in the Hubble diagram at optical wavelengths and host galaxy stellar mass are observed to correlate in Type Ia supernovae (SNe Ia) (`magnitude step'). Among possible prog…

astro-ph.EP2021★ 17 cited

Dust Accumulation near the Magnetospheric Truncation of Protoplanetary Discs around T Tauri Stars

Rixin Li, Yi-Xian Chen, Douglas N. C. Lin

The prevalence of short-period super-Earths that are independent of host metallicity challenges the theoretical construction of their origin. We propose that dust trapping in the g…

astro-ph.GA2021★ 45 cited

The Prevalence of Galaxy Overdensities Around UV-Luminous Lyman Emitters in the Epoch of Reionization

E. Leonova, P. A. Oesch, Y. Qin +19

Before the end of the epoch of reionization, the Hydrogen in the Universe was predominantly neutral. This leads to a strong attenuation of Ly lines of galaxies in th…

astro-ph.EP2021★ 5 cited

An Investigation of Libration Heating and the Thermal State of Enceladus's Ice Shell

Wencheng D. Shao, Francis Nimmo

Tidal dissipation is thought to be responsible for the observed high heat loss on Enceladus. Forced librations can enhance tidal dissipation in the ice shell, but how such libratio…

astro-ph.EP2021★ 19 cited

A new method to measure the spectra of transiting exoplanet atmospheres using multi-object spectroscopy

Vatsal Panwar, Jean-Michel Désert, Kamen O. Todorov +5

Traditionally, ground-based spectrophotometric observations probing transiting exoplanet atmospheres have employed a linear map between comparison and target star light curves (e.g…

astro-ph.GA2021★ 26 cited

Fe II emission in active galactic nuclei

C. Martin Gaskell, Neha Thakur, Betsy Tian +1

We review problems raised by Fe II emission in AGNs and address the question of its relationship to other broad-line region (BLR) lines. The self-shielding, stratified, BLR model o…

astro-ph.SR2021★ 6 cited

H-band light curves of Milky Way Cepheids via Difference Imaging

Tarini Konchady, Ryan J. Oelkers, David O. Jones +4

We present H-band light curves of Milky Way Classical Cepheids observed as part of the DEHVILS survey with the Wide-Field Infrared Camera on the United Kingdom InfraRed Telescope.…

astro-ph.HE2021★ 22 cited

Updated Photometry of the Yellow Supergiant Progenitor and Late-time Observations of the Type IIb Supernova 2016gkg

Charles D. Kilpatrick, David A. Coulter, Ryan J. Foley +4

We present Hubble Space Telescope (HST) observations of the type IIb supernova (SN) 2016gkg at 652, 1698, and 1795 days with the Advanced Camera for Surveys (ACS) and Wide Field Ca…

astro-ph.GA2021★ 30 cited

KODIAQ-Z: Metals and Baryons in the Cool Intergalactic and Circumgalactic Gas at 2.2<z<3.6

Nicolas Lehner, Claire Kopenhafer, John O'Meara +8

We present the KODIAQ-Z survey aimed to characterize the cool, photoionized gas at 2.2<z<3.6 in 202 HI-selected absorbers with 14.6<log N(HI)<20, i.e., the gaseous interface betwee…

astro-ph.GA2021★ 52 cited

Sizes of Lensed Lower-luminosity z=4-8 Galaxies from the Hubble Frontier Field Program

R. J. Bouwens, G. D. Illingworth, P. G. van Dokkum +3

We constrain the rest-UV size-luminosity relation for star-forming galaxies at z~4 and z~6, 7, and 8 identified behind clusters from the Hubble Frontier Fields (HFF) program. The s…

cs.CV2021★ 25 cited

Relational Graph Learning for Grounded Video Description Generation

Wenqiao Zhang, Xin Eric Wang, Siliang Tang +5

Grounded video description (GVD) encourages captioning models to attend to appropriate video regions (e.g., objects) dynamically and generate a description. Such a setting can help…

astro-ph.GA2021★ 30 cited

SDSS-IV MaNGA: Understanding Ionized Gas Turbulence using Integral Field Spectroscopy of 4500 Star-Forming Disk Galaxies

David R. Law, Francesco Belfiore, Matthew A. Bershady +8

The Sloan Digital Sky Survey MaNGA program has now obtained integral field spectroscopy for over 10,000 galaxies in the nearby universe. We use the final MaNGA data release DR17 to…

astro-ph.GA2021

SDSS-IV MaNGA: Cannibalism Caught in the Act -- on the Frequency of Occurrence of Multiple Cores in Brightest Cluster Galaxies

Yun-Hsin Hsu, Yen-Ting Lin, Song Huang +16

Although it is generally accepted that massive galaxies form in a two-phased fashion, beginning with a rapid mass buildup through intense starburst activities, followed by primaril…

astro-ph.HE2021★ 11 cited

Handing off the outcome of binary neutron star mergers for accurate and long-term post-merger simulations

Federico G. Lopez Armengol, Zachariah B. Etienne, Scott C. Noble +20

We perform binary neutron star (BNS) merger simulations in full dynamical general relativity with IllinoisGRMHD, on a Cartesian grid with adaptive-mesh refinement. After the remnan…

astro-ph.HE2021★ 55 cited

Pulsational pair-instability supernovae: gravitational collapse, black-hole formation, and beyond

Ninoy Rahman, Hans-Thomas Janka, Georg Stockinger +1

We investigate the final collapse of rotating and non-rotating pulsational pair-instability supernova progenitors with zero-age-main-sequence masses of 60, 80, and 115$\mathrm{M}_\…

hep-ex2021★ 30 cited

Modelling and computational improvements to the simulation of single vector-boson plus jet processes for the ATLAS experiment

ATLAS Collaboration

This paper presents updated Monte Carlo configurations used to model the production of single electroweak vector bosons (W, Z/) in association with jets in proton-proton col…

astro-ph.CO2021★ 5 cited

HeII Ly Transmission Spikes and Absorption Troughs in Eight High-resolution Spectra Probing the End of HeII Reionization

Kirill Makan, Gábor Worseck, Frederick B. Davies +3

We present statistics of HeII Lya transmission spikes and large-scale absorption troughs using archival high-resolution (-) far-UV spectra of eight HeI…

astro-ph.HE2021★ 3 cited

Exploring the MeV Sky with a Combined Coded Mask and Compton Telescope: The Galactic Explorer with a Coded Aperture Mask Compton Telescope (GECCO)

Elena Orlando, Eugenio Bottacini, Alexander Moiseev +33

The sky at MeV energies is currently poorly explored. Here we present an innovative mission concept that builds on and improves past and currently proposed missions at such energie…