All Outputs (46)

A toy model for gas sloshing in galaxy clusters (2024)
Journal Article
Roediger, E., Vaezzadeh, I., & Nulsen, P. (2024). A toy model for gas sloshing in galaxy clusters. Monthly notices of the Royal Astronomical Society, 529(1), 563-574. https://doi.org/10.1093/mnras/stae493

We apply a toy model based on ‘pendulum waves’ to gas sloshing in galaxy clusters. Starting with a galaxy cluster potential filled with a hydrostatic intracluster medium (ICM), we perturb all ICM by an initial small, unidirectional velocity, i.e. an... Read More about A toy model for gas sloshing in galaxy clusters.

Developing undergraduate practical skills and independence with ‘at home practical kits’ (2024)
Journal Article
Hubbard, K., Henri, D., Scott, G., Snelling, H., & Roediger, E. (2024). Developing undergraduate practical skills and independence with ‘at home practical kits’. International journal of science education, https://doi.org/10.1080/09500693.2024.2311087

The COVID-19 pandemic posed significant challenges for practical teaching within the sciences. While many instructors adopted innovative alternatives to conventional practicals, many relied on digital approaches that did not give students hands-on ex... Read More about Developing undergraduate practical skills and independence with ‘at home practical kits’.

A Chandra Study of the NGC 7618/UGC 12491 Major Group Merger at Apogee: Multiple Cold Fronts, Boxy Wings, Filaments, and Arc-shaped Slingshot Tails (2023)
Journal Article
Machacek, M. E., Jones, C., Kraft, R. P., Forman, W. R., Roediger, E., Sheardown, A., & Wan, J. T. (2023). A Chandra Study of the NGC 7618/UGC 12491 Major Group Merger at Apogee: Multiple Cold Fronts, Boxy Wings, Filaments, and Arc-shaped Slingshot Tails. The Astrophysical journal, 958(1), Article 93. https://doi.org/10.3847/1538-4357/ad00b2

Analyses of major group mergers are key to understanding the evolution of large-scale structure in the Universe and the microphysical properties of the hot gas in these systems. We present imaging and spectral analyses of deep Chandra observations of... Read More about A Chandra Study of the NGC 7618/UGC 12491 Major Group Merger at Apogee: Multiple Cold Fronts, Boxy Wings, Filaments, and Arc-shaped Slingshot Tails.

AMUSE-Antlia. I. Nuclear X-Ray Properties of Early-type Galaxies in a Dynamically Young Galaxy Cluster (2023)
Journal Article
Hu, Z., Su, Y., Li, Z., Hess, K. M., Kraft, R. P., Forman, W. R., …Roediger, E. (2023). AMUSE-Antlia. I. Nuclear X-Ray Properties of Early-type Galaxies in a Dynamically Young Galaxy Cluster. The Astrophysical journal, 956(2), Article 104. https://doi.org/10.3847/1538-4357/acf292

To understand the formation and growth of supermassive black holes (SMBHs) and their coevolution with host galaxies, it is essential to know the impact of environment on the activity of active galactic nuclei (AGNs). We present new Chandra X-ray obse... Read More about AMUSE-Antlia. I. Nuclear X-Ray Properties of Early-type Galaxies in a Dynamically Young Galaxy Cluster.

The limitations of Rankine-Hugoniot jump conditions for estimating infall velocity during a minor galaxy cluster merger. (2023)
Thesis
Huntley, M. L.-R. The limitations of Rankine-Hugoniot jump conditions for estimating infall velocity during a minor galaxy cluster merger. (Thesis). University of Hull. https://hull-repository.worktribe.com/output/4425365

Resilience of sloshing cold fronts against subsequent minor mergers (2022)
Journal Article
Vaezzadeh, I., Roediger, E., Cashmore, C., Hunt, M., Zuhone, J., Forman, W., …Churazov, E. (2022). Resilience of sloshing cold fronts against subsequent minor mergers. Monthly notices of the Royal Astronomical Society, 514(1), 518-534. https://doi.org/10.1093/mnras/stac784

Minor mergers are common in galaxy clusters. They have the potential to create sloshing cold fronts (SCFs) in the intracluster medium of the cluster. However, the resilience of SCFs to subsequent minor mergers is unknown. Here we investigate the exte... Read More about Resilience of sloshing cold fronts against subsequent minor mergers.

GASP XXIX-unwinding the arms of spiral galaxies via ram-pressure stripping (2020)
Journal Article
Bellhouse, C., McGee, S. L., Smith, R., Poggianti, B. M., Jaffé, Y. L., Kraljic, K., Franchetto, A., Fritz, J., Vulcani, B., Tonnesen, S., Roediger, E., Moretti, A., Gullieuszik, M., & Shin, J. (2020). GASP XXIX-unwinding the arms of spiral galaxies via ram-pressure stripping. Monthly notices of the Royal Astronomical Society, 500(1), 1285-1312. https://doi.org/10.1093/mnras/staa3298

We present the first study of the effect of ram pressure ‘unwinding’ the spiral arms of cluster galaxies. We study 11 ram-pressure stripped galaxies from GASP (GAs Stripping Phenomena in galaxies) in which, in addition to more commonly observed ‘jell... Read More about GASP XXIX-unwinding the arms of spiral galaxies via ram-pressure stripping.

GASP. XXI. Star Formation Rates in the Tails of Galaxies Undergoing Ram Pressure Stripping (2020)
Journal Article
Gullieuszik, M., Poggianti, B. M., McGee, S. L., Moretti, A., Vulcani, B., Tonnesen, S., Roediger, E., Jaffé, Y. L., Fritz, J., Franchetto, A., Omizzolo, A., Bettoni, D., Radovich, M., & Wolter, A. (2020). GASP. XXI. Star Formation Rates in the Tails of Galaxies Undergoing Ram Pressure Stripping. The Astrophysical journal, 899(1), Article 13. https://doi.org/10.3847/1538-4357/aba3cb

© 2020. The American Astronomical Society. All rights reserved.. Using MUSE observations from the GASP survey, we study 54 galaxies undergoing ram pressure stripping (RPS) and spanning a wide range in galaxy mass and host cluster mass. We use this ri... Read More about GASP. XXI. Star Formation Rates in the Tails of Galaxies Undergoing Ram Pressure Stripping.

The ram pressure stripped radio tails of galaxies in the Coma cluster (2020)
Journal Article
Chen, H., Sun, M., Yagi, M., Bravo-Alfaro, H., Brinks, E., Kenney, J., Combes, F., Sivanandam, S., Jachym, P., Fossati, M., Gavazzi, G., Boselli, A., Nulsen, P., Sarazin, C., Ge, C., Yoshida, M., & Roediger, E. (2020). The ram pressure stripped radio tails of galaxies in the Coma cluster. Monthly notices of the Royal Astronomical Society, 496(4), 4654-4673. https://doi.org/10.1093/mnras/staa1868

Previous studies have revealed a population of galaxies in galaxy clusters with ram pressure stripped (RPS) tails of gas and embedded young stars. We observed 1.4 GHz continuum and H I emission with the Very Large Array in its B-configuration in two... Read More about The ram pressure stripped radio tails of galaxies in the Coma cluster.

The effects of gravitation and fluid dynamics on velocity estimation by stagnation point method of a minor galaxy cluster merger, by analysis of full hydro + N-body simulations (2020)
Thesis
Fish, T. M. (2020). The effects of gravitation and fluid dynamics on velocity estimation by stagnation point method of a minor galaxy cluster merger, by analysis of full hydro + N-body simulations. (Thesis). University of Hull. Retrieved from https://hull-repository.worktribe.com/output/4224503

Galaxy clusters are collections of galaxies that grow by merging with galaxies or other clusters. Galaxy clusters are predominantly dark matter and a hot plasma called the intracluster medium (ICM), which can be observed through X-ray bright emission... Read More about The effects of gravitation and fluid dynamics on velocity estimation by stagnation point method of a minor galaxy cluster merger, by analysis of full hydro + N-body simulations.

GASP. XXII. the Molecular Gas Content of the JW100 Jellyfish Galaxy at z ∼ 0.05: Does Ram Pressure Promote Molecular Gas Formation? (2020)
Journal Article
Moretti, A., Paladino, R., Poggianti, B. M., Serra, P., Roediger, E., Gullieuszik, M., Tomičić, N., Radovich, M., Vulcani, B., Jaffé, Y. L., Fritz, J., Bettoni, D., Ramatsoku, M., & Wolter, A. (2020). GASP. XXII. the Molecular Gas Content of the JW100 Jellyfish Galaxy at z ∼ 0.05: Does Ram Pressure Promote Molecular Gas Formation?. The Astrophysical journal, 889(1), https://doi.org/10.3847/1538-4357/ab616a

Within the GASP survey, aimed at studying the effect of ram pressure stripping on star formation quenching in cluster galaxies, we analyze here ALMA observations of the jellyfish galaxy JW100. We find an unexpected large amount of molecular gas (∼2.5... Read More about GASP. XXII. the Molecular Gas Content of the JW100 Jellyfish Galaxy at z ∼ 0.05: Does Ram Pressure Promote Molecular Gas Formation?.

GASP XXIII: a jellyfish galaxy as an astrophysical laboratory of the baryonic cycle (2019)
Journal Article
Poggianti, B. M., Ignesti, A., Gitti, M., Wolter, A., Brighenti, F., Biviano, A., George, K., Vulcani, B., Gullieuszik, M., Moretti, A., Paladino, R., Bettoni, D., Franchetto, A., Jaffé, Y. L., Radovich, M., Roediger, E., Tomičić, N., Tonnesen, S., Bellhouse, C., Fritz, J., & Omizzolo, A. (2019). GASP XXIII: a jellyfish galaxy as an astrophysical laboratory of the baryonic cycle. The Astrophysical journal, 887(2), Article 155. https://doi.org/10.3847/1538-4357/ab5224

© 2019. The American Astronomical Society. All rights reserved. With MUSE, Chandra, VLA, ALMA, and UVIT data from the GASP program, we study the multiphase baryonic components in a jellyfish galaxy (JW100) with a stellar mass 3.2 × 1011 M o hosting a... Read More about GASP XXIII: a jellyfish galaxy as an astrophysical laboratory of the baryonic cycle.

The rotational profiles of cluster galaxies (2019)
Journal Article
Bilton, L. E., Hunt, M., Pimbblet, K. A., & Roediger, E. (2019). The rotational profiles of cluster galaxies. Monthly notices of the Royal Astronomical Society, 490(4), 5017-5032. https://doi.org/10.1093/mnras/stz2927

© 2019 The Author(s) We compile two samples of cluster galaxies with complimentary hydrodynamic and N-body analysis using FLASH code to ascertain how their differing populations drive their rotational profiles and to better understand their dynamical... Read More about The rotational profiles of cluster galaxies.

ALMA Unveils Widespread Molecular Gas Clumps in the Ram Pressure Stripped Tail of the Norma Jellyfish Galaxy (2019)
Journal Article
Jáchym, P., Kenney, J. D., Sun, M., Combes, F., Cortese, L., Scott, T. C., Sivanandam, S., Brinks, E., Roediger, E., Palouš, J., & Fumagalli, M. (2019). ALMA Unveils Widespread Molecular Gas Clumps in the Ram Pressure Stripped Tail of the Norma Jellyfish Galaxy. The Astrophysical journal, 883(2), Article 145. https://doi.org/10.3847/1538-4357/ab3e6c

© 2019 The American Astronomical Society. All rights reserved. We present the first high-resolution map of the cold molecular gas distribution as traced by CO(2-1) emission with ALMA in a long ram pressure stripped tail. The Norma cluster galaxy ESO... Read More about ALMA Unveils Widespread Molecular Gas Clumps in the Ram Pressure Stripped Tail of the Norma Jellyfish Galaxy.

The first holistic view of minor mergers of galaxy clusters (2019)
Thesis
Sheardown, A. J. (2019). The first holistic view of minor mergers of galaxy clusters. (Thesis). University of Hull. Retrieved from https://hull-repository.worktribe.com/output/4221856

Utilising hydrodynamic + N-body simulations, we present the first holistic view of minor mergers of galaxy clusters. A minor merger describes the merging of a main cluster and a less massive subhalo, this could be a subcluster, group or an elliptical... Read More about The first holistic view of minor mergers of galaxy clusters.

Extended X-ray study of M49: The frontier of the Virgo cluster (2019)
Journal Article
Su, Y., Kraft, R. P., Nulsen, P. E. J., Jones, C., Maccarone, T. J., Mernier, F., Lovisari, L., Sheardown, A., Randall, S. W., Roediger, E., Fish, T. M., Forman, W. R., & Churazov, E. (2019). Extended X-ray study of M49: The frontier of the Virgo cluster. Astronomical Journal, 158(1), Article 6. https://doi.org/10.3847/1538-3881/ab1d51

The M49 group, residing outside the virial radius of the Virgo cluster, is falling onto the cluster from the south. We report results from deep XMM-Newton mosaic observations of M49. Its hot gas temperature is 0.8 keV at the group center and rises to... Read More about Extended X-ray study of M49: The frontier of the Virgo cluster.

A new class of x-ray tails of early-type galaxies and subclusters in galaxy clusters: Slingshot tails versus ram pressure stripped tails (2019)
Journal Article
Sheardown, A., Fish, T. M., Roediger, E., Hunt, M., Zuhone, J., Su, Y., Kraft, R. P., Nulsen, P., Churazov, E., Forman, W., Jones, C., Lyskova, N., Eckert, D., & De Grandi, S. (2019). A new class of x-ray tails of early-type galaxies and subclusters in galaxy clusters: Slingshot tails versus ram pressure stripped tails. The Astrophysical journal, 874(2), 112. https://doi.org/10.3847/1538-4357/ab0c06

© 2019. The American Astronomical Society. All rights reserved.. We show that there is a new class of gas tails - slingshot tails - that form as a subhalo (i.e., a subcluster or early-type cluster galaxy) moves away from the cluster center toward the... Read More about A new class of x-ray tails of early-type galaxies and subclusters in galaxy clusters: Slingshot tails versus ram pressure stripped tails.

Close-up view of an ongoing merger between the NGC 4839 group and the Coma cluster - a post-merger scenario (2019)
Journal Article
Lyskova, N., Churazov, E., Zhang, C., Forman, W., Jones, C., Dolag, K., Roediger, E., & Sheardown, A. (2019). Close-up view of an ongoing merger between the NGC 4839 group and the Coma cluster - a post-merger scenario. Monthly notices of the Royal Astronomical Society, 485(2), 2922-2934. https://doi.org/10.1093/mnras/stz597

We study a merger of the NGC 4839 group with the Coma cluster using X-ray observations from the XMM–Newton and Chandra telescopes. X-ray data show two prominent features: (i) a long (∼600 kpc in projection) and bent tail of cool gas trailing (towards... Read More about Close-up view of an ongoing merger between the NGC 4839 group and the Coma cluster - a post-merger scenario.

Constraining Gas Motions in the Intra-Cluster Medium (2019)
Journal Article
Simionescu, A., ZuHone, J., Zhuravleva, I., Churazov, E., Gaspari, M., Nagai, D., Werner, N., Roediger, E., Canning, R., Eckert, D., Gu, L., & Paerels, F. (2019). Constraining Gas Motions in the Intra-Cluster Medium. Space Science Reviews, 215(2), Article 24. https://doi.org/10.1007/s11214-019-0590-1

The detailed velocity structure of the diffuse X-ray emitting intra-cluster medium (ICM) remains one of the last missing key ingredients in understanding the microphysical properties of these hot baryons and constraining our models of the growth and... Read More about Constraining Gas Motions in the Intra-Cluster Medium.

Variability and proper motion of x-ray knots in the jet of Centaurus A (2019)
Journal Article
Snios, B., Wykes, S., Nulsen, P. E. . J., Kraft, R. P., Meyer, E. T., Birkinshaw, M., Worrall, D. M., Hardcastle, M. J., Roediger, E., Forman, W. R., & Jones, C. (2019). Variability and proper motion of x-ray knots in the jet of Centaurus A. The Astrophysical journal, 871(2), Article 248. https://doi.org/10.3847/1538-4357/aafaf3

© 2019. The American Astronomical Society. All rights reserved. We report results from Chandra observations analyzed for evidence of variability and proper motion in the X-ray jet of Centaurus A. Using data spanning 15 yr, collective proper motion o... Read More about Variability and proper motion of x-ray knots in the jet of Centaurus A.