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The surprising accuracy of isothermal Jeans modelling of self-interacting dark matter density profiles (2020)
Journal Article
Robertson, A., Massey, R., Eke, V., Schaye, J., & Theuns, T. (2021). The surprising accuracy of isothermal Jeans modelling of self-interacting dark matter density profiles. Monthly Notices of the Royal Astronomical Society, 501(3), 4610-5634. https://doi.org/10.1093/mnras/staa3954

Recent claims of observational evidence for self-interacting dark matter (SIDM) have relied on a semi-analytic method for predicting the density profiles of galaxies and galaxy clusters containing SIDM. We present a thorough description of this metho... Read More about The surprising accuracy of isothermal Jeans modelling of self-interacting dark matter density profiles.

SuperRAENN: A Semisupervised Supernova Photometric Classification Pipeline Trained on Pan-STARRS1 Medium-Deep Survey Supernovae (2020)
Journal Article
Villar, V. A., Hosseinzadeh, G., Berger, E., Ntampaka, M., Jones, D. O., Challis, P., …Waters, C. (2020). SuperRAENN: A Semisupervised Supernova Photometric Classification Pipeline Trained on Pan-STARRS1 Medium-Deep Survey Supernovae. Astrophysical Journal, 905(2), Article 94. https://doi.org/10.3847/1538-4357/abc6fd

Automated classification of supernovae (SNe) based on optical photometric light-curve information is essential in the upcoming era of wide-field time domain surveys, such as the Legacy Survey of Space and Time (LSST) conducted by the Rubin Observator... Read More about SuperRAENN: A Semisupervised Supernova Photometric Classification Pipeline Trained on Pan-STARRS1 Medium-Deep Survey Supernovae.

Photometric Classification of 2315 Pan-STARRS1 Supernovae with Superphot (2020)
Journal Article
Hosseinzadeh, G., Dauphin, F., Villar, V. A., Berger, E., Jones, D. O., Challis, P., …Waters, C. (2020). Photometric Classification of 2315 Pan-STARRS1 Supernovae with Superphot. Astrophysical Journal, 905(2), Article 93. https://doi.org/10.3847/1538-4357/abc42b

The classification of supernovae (SNe) and its impact on our understanding of explosion physics and progenitors have traditionally been based on the presence or absence of certain spectral features. However, current and upcoming wide-field time-domai... Read More about Photometric Classification of 2315 Pan-STARRS1 Supernovae with Superphot.

MIGHTEE: Are giant radio galaxies more common than we thought? (2020)
Journal Article
Delhaize, J., Heywood, I., Prescott, M., Jarvis, M., Delvecchio, I., Whittam, I., …Vaccari, M. (2021). MIGHTEE: Are giant radio galaxies more common than we thought?. Monthly Notices of the Royal Astronomical Society, 501(3), 3833-3845. https://doi.org/10.1093/mnras/staa3837

We report the discovery of two new giant radio galaxies (GRGs) using the MeerKAT International GHz Tiered Extragalactic Exploration (MIGHTEE) survey. Both GRGs were found within a ∼1 deg2 region inside the COSMOS field. They have redshifts of z = 0.1... Read More about MIGHTEE: Are giant radio galaxies more common than we thought?.

Estimating the size of X-ray lamppost coronae in active galactic nuclei (2020)
Journal Article
Ursini, F., Dovčiak, M., Zhang, W., Matt, G., Petrucci, P., & Done, C. (2020). Estimating the size of X-ray lamppost coronae in active galactic nuclei. Astronomy & Astrophysics, 644, Article A132. https://doi.org/10.1051/0004-6361/202039158

Aims. We report estimates of the X-ray coronal size of active galactic nuclei in the lamppost geometry. In this commonly adopted scenario, the corona is assumed for simplicity to be a point-like X-ray source located on the axis of the accretion disc.... Read More about Estimating the size of X-ray lamppost coronae in active galactic nuclei.

FASS: a turbulence profiler based on a fast, low-noise camera (2020)
Journal Article
Guesalaga, A., Ayancán, B., Sarazin, M., Wilson, R., Perera, S., & Le Louarn, M. (2021). FASS: a turbulence profiler based on a fast, low-noise camera. Monthly Notices of the Royal Astronomical Society, 501(2), 3030-3045. https://doi.org/10.1093/mnras/staa3823

The measurement of the atmospheric optical turbulence with a new scintillation profiler is described and demonstrated. The instrument, FASS (Full Aperture Scintillation Sensor), uses new fast and low-noise detectors to record and process sequences of... Read More about FASS: a turbulence profiler based on a fast, low-noise camera.

The effect of pre-impact spin on the Moon-forming collision (2020)
Journal Article
Ruiz-Bonilla, S., Eke, V., Kegerreis, J., Massey, R., & Teodoro, L. (2021). The effect of pre-impact spin on the Moon-forming collision. Monthly Notices of the Royal Astronomical Society, 500(3), 2861-2870. https://doi.org/10.1093/mnras/staa3385

We simulate the hypothesized collision between the proto-Earth and a Mars-sized impactor that created the Moon. Among the resulting debris disc in some impacts, we find a self-gravitating clump of material. It is roughly the mass of the Moon, contain... Read More about The effect of pre-impact spin on the Moon-forming collision.

Euclid: Forecast constraints on the cosmic distance duality relation with complementary external probes (2020)
Journal Article
Martinelli, M., Martins, C., Nesseris, S., Sapone, D., Tutusaus, I., Avgoustidis, A., …Zacchei, A. (2020). Euclid: Forecast constraints on the cosmic distance duality relation with complementary external probes. Astronomy & Astrophysics, 644, Article A80. https://doi.org/10.1051/0004-6361/202039078

Context. In metric theories of gravity with photon number conservation, the luminosity and angular diameter distances are related via the Etherington relation, also known as the distance duality relation (DDR). A violation of this relation would rule... Read More about Euclid: Forecast constraints on the cosmic distance duality relation with complementary external probes.

A new transient ultraluminous X-ray source in NGC 7090 (2020)
Journal Article
Walton, D., Heida, M., Bachetti, M., Fürst, F., Brightman, M., Earnshaw, H., …Stern, D. (2021). A new transient ultraluminous X-ray source in NGC 7090. Monthly Notices of the Royal Astronomical Society, 501(1), 1002-1012. https://doi.org/10.1093/mnras/staa3666

We report on the discovery of a new, transient ultraluminous X-ray source (ULX) in the galaxy NGC 7090. This new ULX, which we refer to as NGC 7090 ULX3, was discovered via monitoring with Swift during 2019–2020, and to date has exhibited a peak lumi... Read More about A new transient ultraluminous X-ray source in NGC 7090.

Euclid: Identification of asteroid streaks in simulated images using StreakDet software (2020)
Journal Article
Pöntinen, M., Granvik, M., Nucita, A., Conversi, L., Altieri, B., Auricchio, N., …Zoubian, J. (2020). Euclid: Identification of asteroid streaks in simulated images using StreakDet software. Astronomy & Astrophysics, 644, Article A35. https://doi.org/10.1051/0004-6361/202037765

Context. The ESA Euclid space telescope could observe up to 150 000 asteroids as a side product of its primary cosmological mission. Asteroids appear as trailed sources, that is streaks, in the images. Owing to the survey area of 15 000 square degree... Read More about Euclid: Identification of asteroid streaks in simulated images using StreakDet software.

Reaching small scales with low-frequency imaging: applications to the Dark Ages (2020)
Journal Article
Morabito, L., & Silk, J. (2021). Reaching small scales with low-frequency imaging: applications to the Dark Ages. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 379(2188), Article 20190571. https://doi.org/10.1098/rsta.2019.0571

The initial conditions for the density perturbations in the early Universe, which dictate the large-scale structure and distribution of galaxies we see today, are set during inflation. Measurements of primordial non-Gaussianity are crucial for distin... Read More about Reaching small scales with low-frequency imaging: applications to the Dark Ages.