output
19922026
Showing 2020 · astro-ph.HEShow all

46 papers · 2 filters

astro-ph.HE2020★ 37 cited

Searches after Gravitational Waves Using ARizona Observatories (SAGUARO): Observations and Analysis from Advanced LIGO/Virgo's Third Observing Run

K. Paterson, M. J. Lundquist, J. C. Rastinejad +34

With the conclusion of the third observing run for Advanced LIGO/Virgo (O3), we present a detailed analysis of both triggered and serendipitous observations of 17 gravitational wav…

astro-ph.HE2020★ 20 cited

A search for time-dependent astrophysical neutrino emission with IceCube data from 2012 to 2017

IceCube Collaboration, R. Abbasi, M. Ackermann +361

High-energy neutrinos are unique messengers of the high-energy universe, tracing the processes of cosmic-ray acceleration. This paper presents analyses focusing on time-dependent n…

astro-ph.HE2020★ 26 cited

Follow-up of astrophysical transients in real time with the IceCube Neutrino Observatory

R. Abbasi, M. Ackermann, J. Adams +360

In multi-messenger astronomy, rapid investigation of interesting transients is imperative. As an observatory with a 4 steradian field of view and 99\% uptime, the IceCube…

astro-ph.HE2020★ 380 cited

The IceCube high-energy starting event sample: Description and flux characterization with 7.5 years of data

R. Abbasi, M. Ackermann, J. Adams +362

The IceCube Neutrino Observatory has established the existence of a high-energy all-sky neutrino flux of astrophysical origin. This discovery was made using events interacting with…

astro-ph.HE2020★ 8 cited

First all-flavor search for transient neutrino emission using 3-years of IceCube DeepCore data

R. Abbasi, M. Ackermann, J. Adams +359

Since the discovery of a flux of high-energy astrophysical neutrinos, searches for their origins have focused primarily at TeV-PeV energies. Compared to sub-TeV searches, high-ener…

astro-ph.HE2020★ 74 cited

Early spectral evolution of classical novae: consistent evidence for multiple distinct outflows

E. Aydi, L. Chomiuk, L. Izzo +18

The physical mechanism driving mass ejection during a nova eruption is still poorly understood. Possibilities include ejection in a single ballistic event, a common envelope intera…

astro-ph.HE2020★ 38 cited

High-Cadence, Early-Time Observations of Core-Collapse Supernovae From the TESS Prime Mission

P. J. Vallely, C. S. Kochanek, K. Z. Stanek +2

We present observations from the Transiting Exoplanet Survey Satellite (TESS) of twenty bright core-collapse supernovae with peak TESS-band magnitudes mag. We reduce t…

astro-ph.HE2020★ 44 cited

Gravitational-Wave Signatures from Compact Object Binaries in the Galactic Center

Huiyi Wang, Alexander P. Stephan, Smadar Naoz +2

Almost every galaxy has a supermassive black hole (SMBH) residing at its center, the Milky Way included. Recent studies suggest that these unique places are expected to host a high…

astro-ph.HE2020★ 38 cited

Super-virial temperature or Neon overabundance?: Suzaku observations of the Milky Way circumgalactic Medium

Anjali Gupta, Joshua Kingsbury, Smita Mathur +4

We analyzed Suzaku and Chandra observations of the soft diffuse X-ray background toward four sightlines with the goal of characterizing the X-ray emission from the Milky Way circum…

astro-ph.HE2020★ 6 cited

A search for ultrahigh-energy neutrinos associated with astrophysical sources using the third flight of ANITA

C. Deaconu, L. Batten, P. Allison +60

The ANtarctic Impulsive Transient Antenna (ANITA) long-duration balloon experiment is sensitive to interactions of ultra high-energy (E > 10^{18} eV) neutrinos in the Antarctic ice…

astro-ph.HE2020★ 6 cited

The Antesonic Condition for the Explosion of Core-Collapse Supernovae II: Rotation and Turbulence

Matthias J. Raives, Todd A. Thompson, Sean M. Couch

In the problem of steady free-fall onto a standing shockwave around acentral mass, the "antesonic" condition limits the regime of stable accretion to $c_T^2/v_\mathrm{esc}^2\leq3/1…

astro-ph.HE2020★ 123 cited

ASASSN-14ko is a Periodic Nuclear Transient in ESO 253-G003

Anna V. Payne, Benjamin J. Shappee, Jason T. Hinkle +24

We present the discovery that ASASSN-14ko is a periodically flaring AGN at the center of the galaxy ESO 253-G003. At the time of its discovery by the All-Sky Automated Survey for S…

astro-ph.HE2020★ 39 cited

The Chandra Deep Wide-Field Survey: A New Chandra Legacy Survey in the Boötes Field I. X-ray Point Source Catalog, Number Counts and Multi-Wavelength Counterparts

A. Masini, R. C. Hickox, C. M. Carroll +30

We present a new, ambitious survey performed with the Chandra X-ray Observatory of the 9.3 deg Boötes field of the NOAO Deep Wide-Field Survey. The wide field probes a statisti…

astro-ph.HE2020★ 12 cited

Experimental tests of sub-surface reflectors as an explanation for the ANITA anomalous events

D. Smith, D. Z. Besson, C. Deaconu +31

The balloon-borne ANITA experiment is designed to detect ultra-high energy neutrinos via radio emissions produced by an in-ice shower. Although initially purposed for interactions…

astro-ph.HE2020★ 25 cited

SN2019yvq Does Not Conform to SN Ia Explosion Models

M. A. Tucker, C. Ashall, B. J. Shappee +7

We present new photometric and spectroscopic observations of SN 2019yvq, a Type Ia supernova (SN Ia) exhibiting several peculiar properties including an excess of UV/optical flux w…

astro-ph.HE2020★ 45 cited

Model Light Curves for Type Ib and Ic Supernovae

Stan Woosley, Tuguldur Sukhbold, Daniel Kasen

Using the Monte Carlo code, SEDONA, multiband photometry and spectra are calculated for supernovae derived from stripped helium stars with presupernova masses from 2.2 to 10.0 $M_\…

astro-ph.HE2020★ 24 cited

SN 2017ivv: two years of evolution of a transitional Type II supernova

C. P. Gutiérrez, A. Pastorello, A. Jerkstrand +39

We present the photometric and spectroscopic evolution of the Type II supernova (SN II) SN 2017ivv (also known as ASASSN-17qp). Located in an extremely faint galaxy (M ma…

astro-ph.HE2020★ 538 cited

IceCube-Gen2: The Window to the Extreme Universe

Gen2 Collaboration, M. G. Aartsen, R. Abbasi +431

The observation of electromagnetic radiation from radio to -ray wavelengths has provided a wealth of information about the universe. However, at PeV (10 eV) energies and…

astro-ph.HE2020★ 15 cited

Multimessenger Gamma-Ray and Neutrino Coincidence Alerts using HAWC and IceCube sub-threshold Data

H. A. Ayala Solares, S. Coutu, J. J. DeLaunay +446

The High Altitude Water Cherenkov (HAWC) and IceCube observatories, through the Astrophysical Multimessenger Observatory Network (AMON) framework, have developed a multimessenger j…

astro-ph.HE2020★ 33 cited

Unusual Near-horizon Cosmic-ray-like Events Observed by ANITA-IV

ANITA Collaboration, P. W. Gorham, A. Ludwig +57

ANITA's fourth long-duration balloon flight in late 2016 detected 29 cosmic-ray (CR)-like events on a background of anthropogenic events. CRs are mainly seen…

astro-ph.HE2020★ 69 cited

Exciting Prospects for Detecting Late-Time Neutrinos from Core-Collapse Supernovae

Shirley Weishi Li, Luke F. Roberts, John F. Beacom

The importance of detecting neutrinos from a Milky Way core-collapse supernova is well known. An under-studied phase is proto-neutron star cooling. For SN 1987A, this seemingly beg…

astro-ph.HE2020★ 10 cited

Spatially-Resolved Study of Recombining Plasma in W49B Using XMM-Newton

Tyler Holland-Ashford, Laura A. Lopez, Katie Auchettl

W49B is the youngest SNR to date that exhibits recombining plasma. The two prevailing theories of this overionization are rapid cooling via adiabatic expansion or through thermal c…

astro-ph.HE2020★ 14 cited

ASASSN-18am/SN 2018gk : An overluminous Type IIb supernova from a massive progenitor

Subhash Bose, Subo Dong, C. S. Kochanek +29

ASASSN-18am/SN 2018gk is a newly discovered member of the rare group of luminous, hydrogen-rich supernovae (SNe) with a peak absolute magnitude of mag that is in…

astro-ph.HE2020

A DESGW Search for the Electromagnetic Counterpart to the LIGO/Virgo Gravitational Wave Binary Neutron Star Merger Candidate S190510g

DES Collaboration, A. Garcia, R. Morgan +87

We present the results from a search for the electromagnetic counterpart of the LIGO/Virgo event S190510g using the Dark Energy Camera (DECam). S190510g is a binary neutron star (B…