All Outputs (432)

Quasar feedback survey: multiphase outflows, turbulence, and evidence for feedback caused by low power radio jets inclined into the galaxy disc (2022)
Journal Article
Girdhar, A., Harrison, C., Mainieri, V., Bittner, A., Costa, T., Kharb, P., …Ward, S. (2022). Quasar feedback survey: multiphase outflows, turbulence, and evidence for feedback caused by low power radio jets inclined into the galaxy disc. Monthly Notices of the Royal Astronomical Society, 512(2), 1608-1628. https://doi.org/10.1093/mnras/stac073

We present a study of a luminous, z = 0.15, type-2 quasar (L[OIII] = 1042.8 erg s−1) from the Quasar Feedback Survey. It is classified as ‘radio-quiet’ (L1.4 GHz = 1023.8 W Hz−1); however, radio imaging reveals ∼ 1 kpc low-power radio jets (Pjet = 10... Read More about Quasar feedback survey: multiphase outflows, turbulence, and evidence for feedback caused by low power radio jets inclined into the galaxy disc.

Deep sub-arcsecond wide-field imaging of the Lockman Hole field at 144 MHz (2022)
Journal Article
Sweijen, F., van Weeren, R., Röttgering, H., Morabito, L., Jackson, N., Offringa, A., …Thomson, A. (2022). Deep sub-arcsecond wide-field imaging of the Lockman Hole field at 144 MHz. Nature Astronomy, 6(3), 350-356. https://doi.org/10.1038/s41550-021-01573-z

Recent observations of the radio sky show that the vast majority of sources detected at 144 MHz are unresolved at the typical resolution of a few arcseconds1, demonstrating the need for sub-arcsecond-resolution surveys to make detailed studies. At lo... Read More about Deep sub-arcsecond wide-field imaging of the Lockman Hole field at 144 MHz.

A Marvellous Sign and A Fiery Globe: A Medieval English Report of Ball Lightning (2022)
Journal Article
Gasper, G. E., & Tanner, B. K. (2022). A Marvellous Sign and A Fiery Globe: A Medieval English Report of Ball Lightning. Weather, 77(7), 232-234. https://doi.org/10.1002/wea.4144

We describe an entry in a twelfth century monastic chronicle, compiled and composed by Gervase of Canterbury (c. 1145–c. 1210), which gives a credible description of ball lightning. It predates the earliest known report of the phenomenon from England... Read More about A Marvellous Sign and A Fiery Globe: A Medieval English Report of Ball Lightning.

The Solar Activity Monitor Network – SAMNet (2022)
Journal Article
Erdélyi, R., Korsós, M. B., Huang, X., Yang, Y., Pizzey, D., Wrathmall, S. A., …Zuccarello, F. (2022). The Solar Activity Monitor Network – SAMNet. Journal of Space Weather and Space Climate, 12, Article 2. https://doi.org/10.1051/swsc/2021025

The Solar Activity Magnetic Monitor (SAMM) Network (SAMNet) is a future UK-led international network of ground-based solar telescope stations. SAMNet, at its full capacity, will continuously monitor the Sun’s intensity, magnetic, and Doppler velocity... Read More about The Solar Activity Monitor Network – SAMNet.

Euclid: Forecasts from redshift-space distortions and the Alcock-Paczynski test with cosmic voids (2022)
Journal Article
Hamaus, N., Aubert, M., Pisani, A., Contarini, S., Verza, G., Cousinou, M. -., …Romelli, E. (2022). Euclid: Forecasts from redshift-space distortions and the Alcock-Paczynski test with cosmic voids. Astronomy & Astrophysics, 658, Article A20. https://doi.org/10.1051/0004-6361/202142073

Euclid is poised to survey galaxies across a cosmological volume of unprecedented size, providing observations of more than a billion objects distributed over a third of the full sky. Approximately 20 million of these galaxies will have their spectro... Read More about Euclid: Forecasts from redshift-space distortions and the Alcock-Paczynski test with cosmic voids.

Potential and limitations of machine-learning approaches to inclusive |Vub| determinations (2022)
Journal Article
Biekötter, A., Kwok, K. W., & Pecjak, B. D. (2022). Potential and limitations of machine-learning approaches to inclusive |Vub| determinations. Journal of High Energy Physics, 2022(143), Article 143. https://doi.org/10.1007/jhep01%282022%29143

The determination of |Vub| in inclusive semileptonic B → Xuℓν decays will be among the pivotal tasks of Belle II. In this paper we study the potential and limitations of machine-learning approaches that attempt to reduce theory uncertainties by exten... Read More about Potential and limitations of machine-learning approaches to inclusive |Vub| determinations.

Sub-arcsecond imaging with the International LOFAR Telescope (2022)
Journal Article
Jackson, N., Badole, S., Morgan, J., Chhetri, R., Prūsis, K., Nikolajevs, A., …Zucca, P. (2022). Sub-arcsecond imaging with the International LOFAR Telescope. Astronomy & Astrophysics, 658, Article A2. https://doi.org/10.1051/0004-6361/202140649

The International LOFAR Telescope is an interferometer with stations spread across Europe. With baselines of up to ~2000 km, LOFAR has the unique capability of achieving sub-arcsecond resolution at frequencies below 200 MHz. However, it is technicall... Read More about Sub-arcsecond imaging with the International LOFAR Telescope.

Pushing sub-arcsecond resolution imaging down to 30 MHz with the trans-European International LOFAR Telescope (2022)
Journal Article
Groeneveld, C., van Weeren, R., Miley, G., Morabito, L., de Gasperin, F., Callingham, J., …Röttgering, H. (2022). Pushing sub-arcsecond resolution imaging down to 30 MHz with the trans-European International LOFAR Telescope. Astronomy & Astrophysics, 658, Article A9. https://doi.org/10.1051/0004-6361/202141352

Relatively little information is available about the Universe at ultra-low radio frequencies (ULF; i.e., below 50 MHz), although the ULF spectral window contains a wealth of unique diagnostics for studying galactic and extragalactic phenomena. Subarc... Read More about Pushing sub-arcsecond resolution imaging down to 30 MHz with the trans-European International LOFAR Telescope.

The resolved jet of 3C 273 at 150 MHz: Sub-arcsecond imaging with the LOFAR international baselines (2022)
Journal Article
Harwood, J., Mooney, S., Morabito, L., Quinn, J., Sweijen, F., Groeneveld, C., …Moldon, J. (2022). The resolved jet of 3C 273 at 150 MHz: Sub-arcsecond imaging with the LOFAR international baselines. Astronomy & Astrophysics, 658, Article A8. https://doi.org/10.1051/0004-6361/202141579

Context. Since its discovery in 1963, 3C 273 has become one of the most widely studied quasars with investigations spanning the electromagnetic spectrum. While much has therefore been discovered about this historically notable source, its low-frequen... Read More about The resolved jet of 3C 273 at 150 MHz: Sub-arcsecond imaging with the LOFAR international baselines.

High-resolution international LOFAR observations of 4C 43.15. Spectral ages and injection indices in a high-z radio galaxy (2022)
Journal Article
Sweijen, F., Morabito, L., Harwood, J., van Weeren, R., Röttgering, H., Callingham, J., …Moldon, J. (2022). High-resolution international LOFAR observations of 4C 43.15. Spectral ages and injection indices in a high-z radio galaxy. Astronomy & Astrophysics, 658, Article A3. https://doi.org/10.1051/0004-6361/202039871

It has long been known that radio sources with the steepest spectra are preferentially associated with the most distant galaxies, the α − z relation, but the reason for this relation is an open question. The spatial distribution of spectra in high-z... Read More about High-resolution international LOFAR observations of 4C 43.15. Spectral ages and injection indices in a high-z radio galaxy.

Origin of the ring structures in Hercules A. Sub-arcsecond 144 MHz to 7 GHz observations (2022)
Journal Article
Timmerman, R., van Weeren, R., Callingham, J., Cotton, W., Perley, R., Morabito, L., …Brunetti, G. (2022). Origin of the ring structures in Hercules A. Sub-arcsecond 144 MHz to 7 GHz observations. Astronomy & Astrophysics, 658, Article A5. https://doi.org/10.1051/0004-6361/202140880

The prominent radio source Hercules A features complex structures in its radio lobes. Although it is one of the most comprehensively studied sources in the radio sky, the origin of the ring structures in the Hercules A radio lobes remains an open que... Read More about Origin of the ring structures in Hercules A. Sub-arcsecond 144 MHz to 7 GHz observations.

Diindolocarbazole – achieving multiresonant thermally activated delayed fluorescence without the need for acceptor units (2022)
Journal Article
Hall, D., Stavrou, K., Duda, E., Danos, A., Bagnich, S., Warriner, S., …Zysman-Colman, E. (2022). Diindolocarbazole – achieving multiresonant thermally activated delayed fluorescence without the need for acceptor units. Materials Horizons, 9(3), 1068-1080. https://doi.org/10.1039/d1mh01383a

In this work we present a new multi-resonance thermally activated delayed fluorescence (MR-TADF) emitter paradigm, demonstrating that the structure need not require the presence of acceptor atoms. Based on an in silico design, the compound DiICzMes4... Read More about Diindolocarbazole – achieving multiresonant thermally activated delayed fluorescence without the need for acceptor units.

Fast full N-body simulations of generic modified gravity: derivative coupling models (2022)
Journal Article
Hernández-Aguayo, C., Ruan, C., Li, B., Arnold, C., Baugh, C. M., Klypin, A., & Prada, F. (2022). Fast full N-body simulations of generic modified gravity: derivative coupling models. Journal of Cosmology and Astroparticle Physics, 2022, Article 048. https://doi.org/10.1088/1475-7516/2022/01/048

We present mg-glam, a code developed for the very fast production of full N-body cosmological simulations in modified gravity (MG) models. We describe the implementation, numerical tests and first results of a large suite of cosmological simulations... Read More about Fast full N-body simulations of generic modified gravity: derivative coupling models.

Primordial black hole evaporation and dark matter production. II. Interplay with the freeze-in or freeze-out mechanism (2022)
Journal Article
Cheek, A., Heurtier, L., Perez-Gonzalez, Y. F., & Turner, J. (2022). Primordial black hole evaporation and dark matter production. II. Interplay with the freeze-in or freeze-out mechanism. Physical Review D, 105(1), https://doi.org/10.1103/physrevd.105.015023

We study how the evaporation of primordial black holes (PBHs) can affect the production of dark matter (DM) particles through thermal processes. We consider fermionic DM interacting with Standard Model particles via a spin-1 mediator in the context o... Read More about Primordial black hole evaporation and dark matter production. II. Interplay with the freeze-in or freeze-out mechanism.

Primordial black hole evaporation and dark matter production. I. Solely Hawking radiation (2022)
Journal Article
Cheek, A., Heurtier, L., Perez-Gonzalez, Y. F., & Turner, J. (2022). Primordial black hole evaporation and dark matter production. I. Solely Hawking radiation. Physical Review D, 105(1), https://doi.org/10.1103/physrevd.105.015022

Hawking evaporation of black holes in the early Universe is expected to copiously produce all kinds of particles, regardless of their charges under the Standard Model gauge group. For this reason, any fundamental particle, known or otherwise, could b... Read More about Primordial black hole evaporation and dark matter production. I. Solely Hawking radiation.

Landscaping CP-violating BSM scenarios (2022)
Journal Article
Das Bakshi, S., Chakrabortty, J., Englert, C., Spannowsky, M., & Stylianou, P. (2022). Landscaping CP-violating BSM scenarios. Nuclear Physics B, 975, https://doi.org/10.1016/j.nuclphysb.2022.115676

We consider a wide range of UV scenarios with the aim of informing searches for CP violation at the TeV scale using effective field theory techniques. We demonstrate that broad theoretical assumptions about the nature of UV dynamics responsible for C... Read More about Landscaping CP-violating BSM scenarios.

Asymmetrical‐Dendronized TADF Emitters for Efficient Non‐doped Solution‐Processed OLEDs by Eliminating Degenerate Excited States and Creating Solely Thermal Equilibrium Routes (2022)
Journal Article
Li, C., Harrison, A. K., Liu, Y., Zhao, Z., Zeng, C., Dias, F. B., …Bryce, M. R. (2022). Asymmetrical‐Dendronized TADF Emitters for Efficient Non‐doped Solution‐Processed OLEDs by Eliminating Degenerate Excited States and Creating Solely Thermal Equilibrium Routes. Angewandte Chemie International Edition, 61(19), Article e202115140. https://doi.org/10.1002/anie.202115140

Two asymmetric “half-dendronized” and “half-dendronized-half-encapsulated” TADF emitters eliminate degenerate excited states, assuring a solely thermal equilibrium route for an effective spin-flip process. AEE properties can minimize the exciton quen... Read More about Asymmetrical‐Dendronized TADF Emitters for Efficient Non‐doped Solution‐Processed OLEDs by Eliminating Degenerate Excited States and Creating Solely Thermal Equilibrium Routes.

Low-temperature open-air synthesis of PVP-coated NaYF4:Yb,Er,Mn upconversion nanoparticles with strong red emission (2022)
Journal Article
MacKenzie, L. E., Alvarez-Ruiz, D., & Pal, R. (2022). Low-temperature open-air synthesis of PVP-coated NaYF4:Yb,Er,Mn upconversion nanoparticles with strong red emission. Royal Society Open Science, 9(1), https://doi.org/10.1098/rsos.211508

Cubic (α-phase) NaYF4:Yb,Er upconversion nanoparticles (UCNPs) are uniquely suited to biophotonics and biosensing applications due to their near-infrared excitation and visible red emission (λex approx. 660 nm), enabling detection via thick overlying... Read More about Low-temperature open-air synthesis of PVP-coated NaYF4:Yb,Er,Mn upconversion nanoparticles with strong red emission.

Euclid preparation XV. Forecasting cosmological constraints for the Euclid and CMB joint analysis (2022)
Journal Article
Ilić, S., Aghanim, N., Baccigalupi, C., Bermejo-Climent, J., Fabbian, G., Legrand, L., …Zucca, E. (2022). Euclid preparation XV. Forecasting cosmological constraints for the Euclid and CMB joint analysis. Astronomy & Astrophysics, 657, Article A91. https://doi.org/10.1051/0004-6361/202141556

The combination and cross-correlation of the upcoming Euclid data with cosmic microwave background (CMB) measurements is a source of great expectation since it will provide the largest lever arm of epochs, ranging from recombination to structure form... Read More about Euclid preparation XV. Forecasting cosmological constraints for the Euclid and CMB joint analysis.

Stasis in an expanding universe: A recipe for stable mixed-component cosmological eras (2022)
Journal Article
Dienes, K. R., Heurtier, L., Huang, F., Kim, D., Tait, T. M., & Thomas, B. (2022). Stasis in an expanding universe: A recipe for stable mixed-component cosmological eras. Physical Review D, 105(2), Article 023530. https://doi.org/10.1103/physrevd.105.023530

One signature of an expanding universe is the time variation of the cosmological abundances of its different components. For example, a radiation-dominated universe inevitably gives way to a matterdominated universe, and critical moments such as matt... Read More about Stasis in an expanding universe: A recipe for stable mixed-component cosmological eras.