Publications (28)
An origin for short g-ray bursts unassociated with current star formation
S. D. Barthelmy, G. Chincarini, D. N. Burrows +28
Two short (<2 s) g-ray bursts (GRBs) have recently been localized and fading afterglow counterparts detected. The combination of these two results left unclear the nature of the ho…
Wide dynamic range magnetic field cycler: Harnessing quantum control at low and high fields
A. Ajoy, X. Lv, E. Druga +11
We describe the construction of a fast field cycling device capable of sweeping a 4-order-of-magnitude range of magnetic fields, from ~1mT to 7T, in under 700ms. Central to this sy…
A Search for TeV Gamma-ray Emission from Pulsar Tails by VERITAS
Wystan Benbow, A. Brill, James Buckley +56
We report on the search for very-high-energy gamma-ray emission from the regions around three nearby supersonic pulsars (PSR B0355+54, PSR J0357+3205 and PSR J1740+1000) that exhib…
Phonon downconversion to suppress correlated errors in superconducting qubits
V. Iaia, J. Ku, A. Ballard +6
Quantum error correction can preserve quantum information in the presence of local errors, but correlated errors are fatal. For superconducting qubits, high-energy particle impacts…
Massive star-formation rates of gamma-ray burst host galaxies: an unobscured view in X-rays
D. Watson, J. Hjorth, P. Jakobsson +3
The hard X-ray (2-10keV) luminosity of a star-forming galaxy tracks its population of high mass X-ray binaries and is essentially unobscured. It is therefore a practically unbiased…
Multi-Wavelength Observation Campaign of the TeV Gamma-Ray Binary HESS J0632+057 with NuSTAR, VERITAS, MDM, and Swift
Y. M. Tokayer, H. An, J. P. Halpern +53
HESS J0632+057 belongs to a rare subclass of binary systems which emits gamma-rays above 100 GeV. It stands out for its distinctive high-energy light curve, which features a sharp…
The evolution of the star formation activity per halo mass up to redshift ~ 1.6 as seen by Herschel
P. Popesso, A. Biviano, G. Rodighiero +40
Star formation in massive galaxies is quenched at some point during hierarchical mass assembly. To understand where and when the quenching processes takes place, we study the evolu…
Statistics of Strongly Coupled Defects in Superconducting Qubits
S. Weeden, D. C. Harrison, S. Patel +8
Decoherence in superconducting qubits is dominated by defects that reside at amorphous interfaces. Interaction with discrete defects results in dropouts that complicate qubit opera…
Tuning Terahertz Optomechanics of MoS2 Bilayers with Homogeneous In-plane Strain
S. Patel, Jose D. Mella, S. Puri +2
Homogeneous in-plane biaxial tensile strain strengthens the out-of-plane van der Waals (vdW) interaction in \MoS\ bilayers (BLs) and can be used to fine-tune their terahertz (THz)…
VTSCat: The VERITAS Catalog of Gamma-Ray Observations
A. Acharyya, C. B. Adams, A. Archer +86
The ground-based gamma-ray observatory VERITAS (Very Energetic Radiation Imaging Telescope Array System) is sensitive to photons of astrophysical origin with energies in the range…
Variability and Spectral Characteristics of Three Flaring Gamma-ray Quasars Observed by VERITAS and Fermi-LAT
C. B. Adams, J. Batshoun, W. Benbow +63
Flat spectrum radio quasars (FSRQs) are the most luminous blazars at GeV energies, but only rarely emit detectable fluxes of TeV gamma rays, typically during bright GeV flares. We…
Precise Localization of the Soft Gamma Repeater SGR 1627-41 and the Anomalous X-ray Pulsar AXP 1E1841-045 with Chandra
S. Wachter, S. Patel, C. Kouveliotou +7
We present precise localizations of AXP 1E1841-045 and SGR 1627-41 with Chandra. We obtained new infrared observations of SGR 1627-41 and reanalyzed archival observations of AXP 1E…
Chandra Observation of Abell 2142: Survival of Dense Subcluster Cores in a Merger
M. Markevitch, T. J. Ponman, P. E. J. Nulsen +19
We use Chandra data to map the gas temperature in the central region of the merging cluster A2142. The cluster is markedly nonisothermal; it appears that the central cooling flow h…
Biaxial strain tuning of excitons in monolayer MoSe by high-temperature physical vapor deposition
S. Patel, T. Faltermeier, S. Puri +6
We present strain tuning of excitonic emission in monolayer MoSe by using a high-temperature physical vapor deposition (PVD). The use of two amorphous substrates, SiN$_{4…
Atomic Structure of Amorphous Optical Coatings of TiO-doped GeO by Grazing-Incidence Total X-ray Scattering Measurements
K. Prasai, J. Jiang, K. Lee +13
Reducing coating thermal noise in future gravitational-wave detectors requires identifying the atomic motifs that control mechanical loss in amorphous optical coatings. We combine…
Substrate interference and strain in the second harmonic generation from MoSe monolayers
S. Puri, S. Patel, J. L. Cabellos +4
Nonlinear optical materials of atomic thickness--such as non-centrosymmetric 2H transition metal dichalcogenide monolayers--have a second order nonlinear susceptibility (…
Gauge Dependences of Higher-Order Corrections to NMSSM Higgs Boson Masses and the Charged Higgs Decay
T. N. Dao, L. Fritz, M. Krause +2
In this paper we compute the electroweak corrections to the charged Higgs boson decay into a boson and a neutral Higgs boson in the CP-conserving NMSSM. We calculate the proces…
Identification of the Infrared Counterpart to a Newly Discovered X-ray Source in the Galactic Center
V. J. Mikles, S. S. Eikenberry, M. P. Muno +2
We present first results of a campaign to find and identify new compact objects in the Galactic Center. Selecting candidates from a combination of Chandra and 2MASS survey data, we…
The HiggsTools Handbook: Concepts and observables for deciphering the Nature of the Higgs Sector
M. Boggia, J. M. Cruz-Martinez, Hjalte Frellesvig +15
This Report summarizes some of the activities of the HiggsTools Initial Training Network working group in the period 2015-2017. The main goal of this working group was to produce a…
Spurious Antenna Modes of the Transmon Qubit
O. Rafferty, S. Patel, C. H. Liu +4
Superconducting qubits are resonant absorbers of pair-breaking radiation. The metal pads that form the qubit capacitance support standing wave modes at frequencies of order 100~GHz…
A facility for the analysis of the electronic structures of solids and their surfaces by synchrotron radiation photoelectron spectroscopy
M. Hoesch, T. K. Kim, P. Dudin +15
A synchrotron radiation beamline in the photon energy range of 18 - 240 eV and an electron spectroscopy end station have been constructed at the 3 GeV Diamond Light Source storage…
Electroweak Corrections to Dark Matter Direct Detection in a Vector Dark Matter Model
S. Glaus, M. Mühlleitner, J. Müller +2
Although many astrophysical and cosmological observations point towards the existence of Dark Matter (DM), the nature of the DM particle has not been clarified to date. In this pap…
VERITAS contributions to the 37th International Cosmic Ray Conference
C. B. Adams, A. Archer, W. Benbow +58
Compilation of papers presented by the VERITAS Collaboration at the 37th International Cosmic Ray Conference (ICRC), held July 12 through July 23, 2021 (online) in Berlin, Germany.
The throughput calibration of the VERITAS telescopes
C. B. Adams, W. Benbow, A. Brill +42
Context. The response of imaging atmospheric Cherenkov telescopes to incident γ-ray-initiated showers in the atmosphere changes as the telescopes age due to exposure to light and…
Observation of the gamma-ray binary HESS J0632+057 with the H.E.S.S., MAGIC, and VERITAS telescopes
C. B. Adams, W. Benbow, A. Brill +409
The results of gamma-ray observations of the binary system HESS J0632+057 collected during 450 hours over 15 years, between 2004 and 2019, are presented. Data taken with the atmosp…
Imaging the Sunyaev-Zel'dovich Effect
J. E. Carlstrom, M. K. Joy, L. Grego +5
We report on results of interferometric imaging of the Sunyaev-Zel'dovich Effect (SZE) with the OVRO and BIMA mm-arrays. Using low-noise cm-wave receivers on the arrays, we have ob…
An Archival Search for Neutron-Star Mergers in Gravitational Waves and Very-High-Energy Gamma Rays
C. B. Adams, W. Benbow, A. Brill +59
The recent discovery of electromagnetic signals in coincidence with neutron-star mergers has solidified the importance of multimessenger campaigns in studying the most energetic as…
Gamma-Ray Observations of a Giant Flare from The Magnetar SGR 1806-20
D. M. Palmer, S. Barthelmy, N. Gehrels +25
Magnetars comprise two classes of rotating neutron stars (Soft Gamma Repeaters (SGRs) and Anomalous X-ray Pulsars), whose X-ray emission is powered by an ultrastrong magnetic field…