Skip to main content

Research Repository

Advanced Search

All Outputs (542)

BAT AGN Spectroscopic Survey - IV: Near-Infrared Coronal Lines, Hidden Broad Lines, and Correlation with Hard X-ray Emission (2017)
Journal Article
Lamperti, I., Koss, M., Trakhtenbrot, B., Schawinski, K., Ricci, C., Oh, K., …Veilleux, S. (2017). BAT AGN Spectroscopic Survey - IV: Near-Infrared Coronal Lines, Hidden Broad Lines, and Correlation with Hard X-ray Emission. Monthly Notices of the Royal Astronomical Society, 467(1), 540-572. https://doi.org/10.1093/mnras/stx055

We provide a comprehensive census of the near-infrared (NIR, 0.8–2.4 μm) spectroscopic properties of 102 nearby (z < 0.075) active galactic nuclei (AGN), selected in the hard X-ray band (14–195 keV) from the Swift-Burst Alert Telescope survey. With t... Read More about BAT AGN Spectroscopic Survey - IV: Near-Infrared Coronal Lines, Hidden Broad Lines, and Correlation with Hard X-ray Emission.

The Phoenix galaxy as seen by NuSTAR (2017)
Journal Article
Masini, A., Comastri, A., Puccetti, S., Baloković, M., Gandhi, P., Guainazzi, M., …Zhang, W. (2017). The Phoenix galaxy as seen by NuSTAR. Astronomy & Astrophysics, 597, Article A100. https://doi.org/10.1051/0004-6361/201629444

Aims. We study the long-term variability of the well-known Seyfert 2 galaxy Mrk 1210 (also known as UGC 4203, or the Phoenix galaxy). Methods. The source was observed by many X-ray facilities in the last 20 yr. Here we present a NuSTAR observation an... Read More about The Phoenix galaxy as seen by NuSTAR.

Thermally activated delayed fluorescent phenothiazine–dibenzo[a,j]phenazine–phenothiazine triads exhibiting tricolor-changing mechanochromic luminescence (2017)
Journal Article
Okazaki, M., Takeda, Y., Data, P., Pander, P., Higginbotham, H., Monkman, A. P., & Minakata, S. (2017). Thermally activated delayed fluorescent phenothiazine–dibenzo[a,j]phenazine–phenothiazine triads exhibiting tricolor-changing mechanochromic luminescence. Chemical Science, 8(4), 2677-2686. https://doi.org/10.1039/c6sc04863c

Novel U-shaped donor–acceptor–donor (D–A–D) π-conjugated multi-functional molecules comprising dibenzo[a,j]phenazine (DBPHZ) as an acceptor and phenothiazines (PTZ) as donors have been developed. Most importantly, the D–A–D compounds exhibit not only... Read More about Thermally activated delayed fluorescent phenothiazine–dibenzo[a,j]phenazine–phenothiazine triads exhibiting tricolor-changing mechanochromic luminescence.

Sphalerons in composite and non-standard Higgs models (2017)
Journal Article
Spannowsky, M., & Tamarit, C. (2017). Sphalerons in composite and non-standard Higgs models. Physical Review D, 95(1), Article 015006. https://doi.org/10.1103/physrevd.95.015006

After the discovery of the Higgs boson and the rather precise measurement of all electroweak boson’s masses the local structure of the electroweak symmetry breaking potential is already quite well established. However, despite being a key ingredient... Read More about Sphalerons in composite and non-standard Higgs models.

Integrating mass spectrometry with MD simulations reveals the role of lipids in Na+/H+ antiporters (2017)
Journal Article
Landreh, M., Marklund, E., Uzdavinys, P., Degiacomi, M., Coincon, M., Gault, J., …Robinson, C. (2017). Integrating mass spectrometry with MD simulations reveals the role of lipids in Na+/H+ antiporters. Nature Communications, 8, Article 13993. https://doi.org/10.1038/ncomms13993

Na+/H+ antiporters are found in all kingdoms of life and exhibit catalysis rates that are among the fastest of all known secondary-active transporters. Here we combine ion mobility mass spectrometry and molecular dynamics simulations to study the con... Read More about Integrating mass spectrometry with MD simulations reveals the role of lipids in Na+/H+ antiporters.

The cosmic assembly of stellar haloes in massive Early-Type Galaxies (2017)
Journal Article
Buitrago, F., Trujillo, I., Curtis-Lake, E., Montes, M., Cooper, A. P., Bruce, V. A., …Cirasuolo, M. (2017). The cosmic assembly of stellar haloes in massive Early-Type Galaxies. Monthly Notices of the Royal Astronomical Society, 466(4), 4888-4903. https://doi.org/10.1093/mnras/stw3382

Using the exquisite depth of the Hubble Ultra Deep Field (HUDF12 programme) data set, we explore the ongoing assembly of the outermost regions of the most massive galaxies (Mstellar ≥ 5× 1010 M⊙) at z ≤ 1. The outskirts of massive objects, particular... Read More about The cosmic assembly of stellar haloes in massive Early-Type Galaxies.

Discovery of the most metal-poor damped Lyman-α system (2017)
Journal Article
Cooke, R. J., Pettini, M., & Steidel, C. C. (2017). Discovery of the most metal-poor damped Lyman-α system. Monthly Notices of the Royal Astronomical Society, 467(1), 802-811. https://doi.org/10.1093/mnras/stx037

We report the discovery and analysis of the most metal-poor damped Lyman α (DLA) system currently known, based on observations made with the Keck HIRES spectrograph. The metal paucity of this system has only permitted the determination of three eleme... Read More about Discovery of the most metal-poor damped Lyman-α system.

Symmetry Reduction in the Quantum Kagome Antiferromagnet Herbertsmithite (2017)
Journal Article
Zorko, A., Herak, M., Gomilšek, M., van Tol, J., Velázquez, M., Khuntia, P., …Mendels, P. (2017). Symmetry Reduction in the Quantum Kagome Antiferromagnet Herbertsmithite. Physical Review Letters, 118(1), Article 017202. https://doi.org/10.1103/physrevlett.118.017202

Employing complementary torque magnetometry and electron spin resonance on single crystals of herbertsmithite, the closest realization to date of a quantum kagome antiferromagnet featuring a spin-liquid ground state, we provide novel insight into dif... Read More about Symmetry Reduction in the Quantum Kagome Antiferromagnet Herbertsmithite.

Adiabatic physics of an exchange-coupled spin-dimer system: Magnetocaloric effect, zero-point fluctuations, and possible two-dimensional universal behavior (2017)
Journal Article
Brambleby, J., Goddard, P., Singleton, J., Jaime, M., Lancaster, T., Huang, L., …Manson, J. (2017). Adiabatic physics of an exchange-coupled spin-dimer system: Magnetocaloric effect, zero-point fluctuations, and possible two-dimensional universal behavior. Physical Review B, 95(2), Article 024404. https://doi.org/10.1103/physrevb.95.024404

We present the magnetic and thermal properties of the bosonic-superfluid phase in a spin-dimer network using both quasistatic and rapidly changing pulsed magnetic fields. The entropy derived from a heat-capacity study reveals that the pulsed-field me... Read More about Adiabatic physics of an exchange-coupled spin-dimer system: Magnetocaloric effect, zero-point fluctuations, and possible two-dimensional universal behavior.

Top-quark loop corrections in Z+jet and Z + 2 jet production (2017)
Journal Article
Campbell, J. M., & Ellis, R. K. (2017). Top-quark loop corrections in Z+jet and Z + 2 jet production. Journal of High Energy Physics, 2017(01), Article 020. https://doi.org/10.1007/jhep01%282017%29020

The sophistication of current predictions for Z+jet production at hadron colliders necessitates a re-evaluation of any approximations inherent in the theoretical calculations. In this paper we address one such issue, the inclusion of mass effects in... Read More about Top-quark loop corrections in Z+jet and Z + 2 jet production.

Densification of a-IGZO with low-temperature annealing for flexible electronics applications (2017)
Journal Article
Troughton, J., Downs, P., Price, R., & Atkinson, D. (2017). Densification of a-IGZO with low-temperature annealing for flexible electronics applications. Applied Physics Letters, 110(1), Article 011903. https://doi.org/10.1063/1.4973629

Amorphous InGaZnO (a-IGZO) thin-film transistors are a leading contender for active channel materials in next generation flat panel displays and flexible electronics. Improved electronic functionality has been linked to the increased density of a-IGZ... Read More about Densification of a-IGZO with low-temperature annealing for flexible electronics applications.

Quantum-critical spin dynamics in a Tomonaga-Luttinger liquid studied with muon-spin relaxation (2017)
Journal Article
Möller, J., Lancaster, T., Blundell, S., Pratt, F., Baker, P., Xiao, F., …Landee, C. (2017). Quantum-critical spin dynamics in a Tomonaga-Luttinger liquid studied with muon-spin relaxation. Physical Review B, 95(2), Article 020402(R). https://doi.org/10.1103/physrevb.95.020402

We demonstrate that quantum-critical spin dynamics can be probed in high magnetic fields using muon-spin relaxation (μ+SR). Our model system is the strong-leg spin ladder bis(2,3-dimethylpyridinium) tetrabromocuprate (DIMPY). In the gapless Tomonaga-... Read More about Quantum-critical spin dynamics in a Tomonaga-Luttinger liquid studied with muon-spin relaxation.

Photometry and Spectrum measurements of the Laser Guide Star beam emission at Observatorio del Roque de Los Muchachos with the Gran Telescope Canarias (2017)
Presentation / Conference Contribution
Lombardi, G., Calia, B., Centrone, M., Talavera, M. R. G., Morris, T., Pfrommer, T., …Postigoh, A. D. U. (2017). Photometry and Spectrum measurements of the Laser Guide Star beam emission at Observatorio del Roque de Los Muchachos with the Gran Telescope Canarias. In Proceedings of the Adaptive Optics for Extremely Large Telescopes 5 (AO4ELT5) : Tenerife, Canary Islands, Spain, June 25-30, 2017 (1-7). https://doi.org/10.26698/ao4elt5.0045

In the past years ESO has built together with industry a transportable Laser Guide Star Unit (WLGSU) to test the laser technology while supporting some strategic experiments for the LGS-AO technologies. Since July 2016, the WLGSU has been installed a... Read More about Photometry and Spectrum measurements of the Laser Guide Star beam emission at Observatorio del Roque de Los Muchachos with the Gran Telescope Canarias.

Reducing the Field of View in Correlating Wavefront Sensors for Solar Adaptive Optics (2017)
Presentation / Conference Contribution
Townson, M. J., & Saunter, C. D. (2017). Reducing the Field of View in Correlating Wavefront Sensors for Solar Adaptive Optics. In Proceedings of the Adaptive Optics for Extremely Large Telescopes 5 (AO4ELT5) : Tenerife, Canary Islands, Spain, June 25-30, 2017. https://doi.org/10.26698/ao4elt5.0156

Wavefront sensing for solar adaptive optics currently requires the use of extended-field Shack-Hartmann wavefront sensors. Such wavefront sensors suffer from a reduced sensitivity to high altitude turbulence due effects of measuring wavefront gradien... Read More about Reducing the Field of View in Correlating Wavefront Sensors for Solar Adaptive Optics.

Preliminary on-sky results of the CANARY experiment with an ELT-elongated sodium LGS (2017)
Presentation / Conference Contribution
Bardou, L., Gendron, E., Rousset, G., Gratadour, D., Basden, A. G., Bonaccini, D., …Reyes Garcia-Talavera, M. (2017). Preliminary on-sky results of the CANARY experiment with an ELT-elongated sodium LGS. In Proceedings of the Adaptive Optics for Extremely Large Telescopes 5 (AO4ELT5) : Tenerife, Canary Islands, Spain, June 25-30, 2017. https://doi.org/10.26698/ao4elt5.0126

We present on-sky results of wavefront sensing on an elongated LGS. These results are derived from observations made with the multi-object AO demonstrator CANARY on the William Herschel Telescope (WHT) in La Palma. The laser guide star is produced us... Read More about Preliminary on-sky results of the CANARY experiment with an ELT-elongated sodium LGS.

Creating the Baryon Asymmetry from Lepto-Bubbles (2017)
Presentation / Conference Contribution
Pascoli, S., Turner, J., Zhou, Y., Lodovico, F. D., Pascoli, S., & Ballett, P. (2017). Creating the Baryon Asymmetry from Lepto-Bubbles. In Proceedings, Prospects in Neutrino Physics (NuPhys2016) : London, UK, December 12-14, 2016

We propose a new mechanism of baryogenesis which proceeds via a CP-violating phase transition. During this phase transition, the coupling of the Weinberg operator is dynamically realised and subsequently a lepton asymmetry is generated via the non-ze... Read More about Creating the Baryon Asymmetry from Lepto-Bubbles.

Flavour symmetric connections with CLFV (2017)
Presentation / Conference Contribution
Zhou, Y., Lodovico, F. D., Pascoli, S., & Ballett, P. (2017). Flavour symmetric connections with CLFV. In Proceedings, Prospects in Neutrino Physics (NuPhys2016) : London, UK, December 12-14, 2016

Flavons are crucial for understanding lepton mixing in models with non-Abelian discrete symmetries. They also result in charged lepton flavour violation (CLFV) via the couplings with leptons. I emphasise that the flavon-triggered CLFV succeeds strong... Read More about Flavour symmetric connections with CLFV.

A 13CO Detection in a Brightest Cluster Galaxy (2017)
Journal Article
Vantyghem, A., McNamara, B., Edge, A., Combes, F., Russell, H., Fabian, A., …Salomé, P. (2017). A 13CO Detection in a Brightest Cluster Galaxy. Astrophysical Journal, 848(2), Article 101. https://doi.org/10.3847/1538-4357/aa8fd0

We present ALMA Cycle 4 observations of CO(1-0), CO(3-2), and 13CO(3-2) line emission in the brightest cluster galaxy (BCG) of RXJ0821+0752. This is one of the first detections of 13CO line emission in a galaxy cluster. Half of the CO(3-2) line emiss... Read More about A 13CO Detection in a Brightest Cluster Galaxy.

Witnessing galaxy assembly in an extended z~3 structure (2017)
Journal Article
Fumagalli, M., Mackenzie, R., Trayford, J., Theuns, T., Cantalupo, S., Christensen, L., …Shanks, T. (2017). Witnessing galaxy assembly in an extended z~3 structure. Monthly Notices of the Royal Astronomical Society, 471(3), 3686-3698. https://doi.org/10.1093/mnras/stx1896

We present new observations acquired with the Multi Unit Spectroscopic Explorer instrument on the Very Large Telescope in a quasar field that hosts a high column density damped Lyα absorber (DLA) at z ≈ 3.25. We detect Lyα emission from a nebula at t... Read More about Witnessing galaxy assembly in an extended z~3 structure.