Dr Elke Roediger's Outputs (40)

Deep Chandra observations of the stripped galaxy group falling into Abell 2142 (2017)
Journal Article
Eckert, D., Gaspari, M., Owers, M. S., Molendi, S., Gastaldello, F., Paltani, S., Ettori, S., Venturi, T., Rossetti, M., Rudnick, L., Roediger, E., Roediger, E., Eckert, D., Ettori, S., Gaspari, M., Gastaldello, F., Molendi, S., Owers, M., Paltani, S., Rossetti, M., …Venturi, T. (2017). Deep Chandra observations of the stripped galaxy group falling into Abell 2142. Astronomy and Astrophysics, 605(September), A25. https://doi.org/10.1051/0004-6361/201730555

In the local Universe, the growth of massive galaxy clusters mainly operates through the continuous accretion of group-scale systems. The infalling group in Abell 2142 is the poster child of such an accreting group, and as such, it is an ideal target... Read More about Deep Chandra observations of the stripped galaxy group falling into Abell 2142.

Molecular gas dominated 50 kpc ram pressure stripped tail of the Coma galaxy D100 (2017)
Journal Article
Jáchym, P., Sun, M., Kenney, J. D. P., Cortese, L., Combes, F., Yagi, M., Yoshida, M., Palouš, J., & Roediger, E. (2017). Molecular gas dominated 50 kpc ram pressure stripped tail of the Coma galaxy D100. The Astrophysical journal, 839(2), 114. https://doi.org/10.3847/1538-4357/aa6af5

We have discovered large amounts of molecular gas, as traced by CO emission, in the ram pressure stripped gas tail of the Coma cluster galaxy D100 (GMP 2910), out to large distances of about 50 kpc. D100 has a 60 kpc long, strikingly narrow tail whic... Read More about Molecular gas dominated 50 kpc ram pressure stripped tail of the Coma galaxy D100.

Chandra and JVLA Observations of HST Frontier Fields Cluster MACS J0717.5+3745 (2017)
Journal Article
van Weeren, R. J., Ogrean, G. A., Jones, C., Forman, W. R., Andrade-Santos, F., Pearce, C. J. J., Bonafede, A., Brüggen, M., Bulbul, E., Clarke, T. E., Churazov, E., David, L., Dawson, W. A., Donahue, M., Goulding, A., Kraft, R. P., Mason, B., Merten, J., Mroczkowski, T., Nulsen, P. E. J., …Zitrin, A. (2017). Chandra and JVLA Observations of HST Frontier Fields Cluster MACS J0717.5+3745. The Astrophysical journal, 835(2), 197. https://doi.org/10.3847/1538-4357/835/2/197

To investigate the relationship between thermal and non-thermal components in merger galaxy clusters, we present deep JVLA and Chandra observations of the HST Frontier Fields cluster MACS J0717.5+3745. The Chandra image shows a complex merger event,... Read More about Chandra and JVLA Observations of HST Frontier Fields Cluster MACS J0717.5+3745.

Capturing the 3D motion of an infalling galaxy via fluid dynamics (2017)
Journal Article
Su, Y., Kraft, R. P., Nulsen, P. E. J., Roediger, E., Forman, W. R., Churazov, E., Randall, S. W., Jones, C., & Machacek, M. E. (2017). Capturing the 3D motion of an infalling galaxy via fluid dynamics. The Astrophysical journal, 835(1), 19. https://doi.org/10.3847/1538-4357/835/1/19

The Fornax Cluster is the nearest galaxy cluster in the southern sky. NGC 1404 is a bright elliptical galaxy falling through the intracluster medium of the Fornax Cluster. The sharp leading edge of NGC 1404 forms a classical "cold front" that separat... Read More about Capturing the 3D motion of an infalling galaxy via fluid dynamics.

Deep Chandra observations of NGC 1404 : cluster plasma physics revealed by an infalling early-type galaxy (2017)
Journal Article
Kraft, R. P., Forman, W. R., Randall, S. W., Machacek, M. E., Roediger, E., Churazov, E., Forman, W., Jones, C., Kraft, R., Machacek, M., Nulsen, P., Randall, S., & Su, Y. (2017). Deep Chandra observations of NGC 1404 : cluster plasma physics revealed by an infalling early-type galaxy. The Astrophysical journal, 834(1), 74. https://doi.org/10.3847/1538-4357/834/1/74

The intracluster medium (ICM), as a magnetized and highly ionized fluid, provides an ideal laboratory to study plasma physics under extreme conditions that cannot yet be achieved on Earth. NGC 1404 is a bright elliptical galaxy that is being gas stri... Read More about Deep Chandra observations of NGC 1404 : cluster plasma physics revealed by an infalling early-type galaxy.

A textbook example of ram-pressure stripping in the Hydra A/A780 cluster (2016)
Journal Article
Roediger, E., De Grandi, S., Eckert, D., Gaspari, M., Gastaldello, F., Ghizzardi, S., Girardi, M., Molendi, S., Nonino, M., & Rossetti, M. (2016). A textbook example of ram-pressure stripping in the Hydra A/A780 cluster. Astronomy and Astrophysics, 592, A154. https://doi.org/10.1051/0004-6361/201526641

In the current epoch, one of the main mechanisms driving the growth of galaxy clusters is the continuous accretion of group-scale halos. In this process, the ram pressure applied by the hot intracluster medium on the gas content of the infalling grou... Read More about A textbook example of ram-pressure stripping in the Hydra A/A780 cluster.

Cold fronts: probes of plasma astrophysics in galaxy clusters (2016)
Journal Article
ZuHone, J. A., & Roediger, E. (2016). Cold fronts: probes of plasma astrophysics in galaxy clusters. Journal of Plasma Physics, 82(3), 535820301-1-535820301-48. https://doi.org/10.1017/s0022377816000544

The most massive baryonic component of galaxy clusters is the “intracluster medium” (ICM), a diffuse, hot, weakly magnetized plasma that is most easily observed in the X-ray band. Despite being observed for decades, the macroscopic transport properti... Read More about Cold fronts: probes of plasma astrophysics in galaxy clusters.

Frontier fields clusters: deep Chandra observations of the complex merger MACS~J1149.6+2223 (2016)
Journal Article
Ogrean, G. A., Van Weeren, R. J., Jones, C., Forman, W., Dawson, W. A., Golovich, N., Andrade-Santos, F., Murray, S. S., Nulsen, P., Roediger, E., Zitrin, A., Bulbul, E., Kraft, R., Goulding, A., Umetsu, K., Mroczkowski, T., Bonafede, A., Randall, S., Sayers, J., Churazov, E., …Ebeling, H. (2016). Frontier fields clusters: deep Chandra observations of the complex merger MACS~J1149.6+2223. The Astrophysical journal, 819(2), 113-1-113-13. https://doi.org/10.3847/0004-637X/819/2/113

The Hubble Space Telescope Frontier Fields cluster MACS J1149.6+2223 is one of the most complex merging clusters, believed to consist of four dark matter halos. We present results from deep (365 ks) Chandra observations of the cluster, which reveal t... Read More about Frontier fields clusters: deep Chandra observations of the complex merger MACS~J1149.6+2223.

Jupiter's X-ray and EUV auroras monitored by Chandra, XXM-Newton, and Hisaki satellite (2016)
Journal Article
Badman, S. V., Branduardi-Raymont, G., Dunn, W. R., Elsner, R. F., Ezoe, Y., Fujimoto, M., Gladstone, G. R., Hasegawa, H., Kimura, T., Kraft, R. P., Masters, A., Murakami, G., Murray, S. S., Roediger, E., Tao, C., Tsuchiya, F., Vogt, M. F., Yamazaki, A., Yoshikawa, I., & Yoshioka, K. (2016). Jupiter's X-ray and EUV auroras monitored by Chandra, XXM-Newton, and Hisaki satellite. Journal of Geophysical Research: Space Physics, 121(3), 2308-2320. https://doi.org/10.1002/2015ja021893

Jupiter's X-ray auroral emission in the polar cap region results from particles which have undergone strong field-aligned acceleration into the ionosphere. The origin of precipitating ions and electrons and the time variability in the X-ray emission... Read More about Jupiter's X-ray and EUV auroras monitored by Chandra, XXM-Newton, and Hisaki satellite.

Shocking features in the merging galaxy cluster RXJ0334.2-0111 (2016)
Journal Article
Dasadia, S., Sun, M., Morandi, A., Sarazin, C., Clarke, T., Nulsen, P., Massaro, F., Roediger, E., Harris, D., & Forman, B. (2016). Shocking features in the merging galaxy cluster RXJ0334.2-0111. Monthly notices of the Royal Astronomical Society, 458(1), 681-694. https://doi.org/10.1093/mnras/stw291

© 2016 The Authors. We present a 66 ks Chandra X-ray observation of the galaxy cluster RXJ0334.2-0111. This deep observation revealed a unique bow shock system associated with a wide angle tail (WAT) radio galaxy and several intriguing substructures.... Read More about Shocking features in the merging galaxy cluster RXJ0334.2-0111.

The discovery of lensed radio and x-ray sources behind the frontier fields cluster MACS J0717.5+3745 with the JVLA and Chandra (2016)
Journal Article
van Weeren, R. J., Ogrean, G. A., Jones, C., Forman, W. R., Andrade-Santos, F., Bonafede, A., Brüggen, M., Bulbul, E., Clarke, T. E., Churazov, E., David, L., Dawson, W. A., Donahue, M., Goulding, A., Kraft, R. P., Mason, B., Merten, J., Mroczkowski, T., Murray, S. S., Nulsen, P. E. J., …Zitrin, A. (2016). The discovery of lensed radio and x-ray sources behind the frontier fields cluster MACS J0717.5+3745 with the JVLA and Chandra. The Astrophysical journal, 817(2), Article ARTN 98. https://doi.org/10.3847/0004-637x/817/2/98

© 2016. The American Astronomical Society. All rights reserved.. We report on high-resolution JVLA and Chandra observations of the Hubble Space Telescope (HST) Frontier Cluster MACS J0717.5+3745. MACS J0717.5+3745 offers the largest contiguous magnif... Read More about The discovery of lensed radio and x-ray sources behind the frontier fields cluster MACS J0717.5+3745 with the JVLA and Chandra.

Jellyfish: The origin and distribution of extreme ram-pressure stripping events in massive galaxy clusters (2015)
Journal Article
McPartland, C., Ebeling, H., Roediger, E., & Blumenthal, K. (2016). Jellyfish: The origin and distribution of extreme ram-pressure stripping events in massive galaxy clusters. Monthly notices of the Royal Astronomical Society, 455(3), 2994-3008. https://doi.org/10.1093/mnras/stv2508

We investigate the observational signatures and physical origin of ram-pressure stripping (RPS) in 63 massive galaxy clusters at z = 0.3–0.7, based on images obtained with the Hubble Space Telescope. Using a training set of a dozen ‘jellyfish’ galaxi... Read More about Jellyfish: The origin and distribution of extreme ram-pressure stripping events in massive galaxy clusters.

Deep Chandra observation and numerical studies of the nearest cluster cold front in the sky (2015)
Journal Article
Werner, N., ZuHone, J. A., Zhuravleva, I., Ichinohe, Y., Simionescu, A., Allen, S. W., Markevitch, M., Fabian, A. C., Keshet, U., Roediger, E., Ruszkowski, M., & Sanders, J. S. (2016). Deep Chandra observation and numerical studies of the nearest cluster cold front in the sky. Monthly notices of the Royal Astronomical Society, 455(1), 846-858. https://doi.org/10.1093/mnras/stv2358

We present the results of a very deep (500 ks) Chandra observation, along with tailored numerical simulations, of the nearest, best resolved cluster cold front in the sky, which lies 90 kpc (19 arcmin) to the north-west of M 87. The northern part of... Read More about Deep Chandra observation and numerical studies of the nearest cluster cold front in the sky.

Frontier fields clusters: Chandra and JVLA view of the pre-merging cluster MACS J0416.1-2403 (2015)
Journal Article
Ogrean, G. A., Weeren, R. J., Jones, C., Clarke, T. E., Sayers, J., Mroczkowski, T., Nulsen, P. E. J., Forman, W., Murray, S. S., Pandey-Pommier, M., Randall, S., Churazov, E., Bonafede, A., Kraft, R., David, L., Andrade-Santos, F., Merten, J., Zitrin, A., Umetsu, K., Goulding, A., …Vikhlinin, A. (2015). Frontier fields clusters: Chandra and JVLA view of the pre-merging cluster MACS J0416.1-2403. The Astrophysical journal, 812(2), 153. https://doi.org/10.1088/0004-637X/812/2/153

Merging galaxy clusters leave long-lasting signatures on the baryonic and non-baryonic cluster constituents, including shock fronts, cold fronts, X-ray substructure, radio halos, and offsets between the dark matter (DM) and the gas components. Using... Read More about Frontier fields clusters: Chandra and JVLA view of the pre-merging cluster MACS J0416.1-2403.

Stripped elliptical galaxies as probes of ICM physics: I. Tails, wakes, and flow patterns in and around stripped ellipticals (2015)
Journal Article
Roediger, E., Kraft, R. P., Nulsen, P. E. J., Forman, W. R., Machacek, M., Randall, S., Jones, C., Churazov, E., & Kokotanekova, R. (2015). Stripped elliptical galaxies as probes of ICM physics: I. Tails, wakes, and flow patterns in and around stripped ellipticals. The Astrophysical journal, 806(1), Article ARTN 103. https://doi.org/10.1088/0004-637X/806/1/103

Elliptical cluster galaxies are progressively stripped of their atmospheres due to their motion through the intra-cluster medium (ICM). Deep X-ray observations reveal the fine-structure of the galaxy's remnant atmosphere and its gas tail and wake. Th... Read More about Stripped elliptical galaxies as probes of ICM physics: I. Tails, wakes, and flow patterns in and around stripped ellipticals.

Stripped elliptical galaxies as probes of ICM physics: II. Stirred, but mixed? Viscous and inviscid gas stripping of the Virgo elliptical M89 (2015)
Journal Article
Roediger, E., Kraft, R. P., Nulsen, P. E. J., Forman, W. R., Machacek, M., Randall, S., Jones, C., Churazov, E., & Kokotanekova, R. (2015). Stripped elliptical galaxies as probes of ICM physics: II. Stirred, but mixed? Viscous and inviscid gas stripping of the Virgo elliptical M89. The Astrophysical journal, 806(1), 104. https://doi.org/10.1088/0004-637X/806/1/104

Elliptical galaxies moving through the intra-cluster medium (ICM) are progressively stripped of their gaseous atmospheres. X-ray observations reveal the structure of galactic tails, wakes, and the interface between the galactic gas and the ICM. This... Read More about Stripped elliptical galaxies as probes of ICM physics: II. Stirred, but mixed? Viscous and inviscid gas stripping of the Virgo elliptical M89.

Star formation in shocked cluster spirals and their tails (2014)
Journal Article
Roediger, E., Brüggen, M., Owers, M. S., Ebeling, H., & Sun, M. (2014). Star formation in shocked cluster spirals and their tails. Monthly notices of the Royal Astronomical Society. Letters, 443(1), L114-L118. https://doi.org/10.1093/mnrasl/slu087

Recent observations of ram pressure stripped spiral galaxies in clusters revealed details of the stripping process, i.e., the truncation of all interstellar medium (ISM) phases and of star formation (SF) in the disk, and multiphase star-forming tails... Read More about Star formation in shocked cluster spirals and their tails.

The narrow X-ray tail and double Hα tails of ESO 137-002 in A3627 (2013)
Journal Article
Zhang, B., Sun, M., Ji, L., Sarazin, C., Lin, X. B., Nulsen, P. E. J., Roediger, E., Donahue, M., Forman, W., Jones, C., Voit, G. M., & Kong, X. (2013). The narrow X-ray tail and double Hα tails of ESO 137-002 in A3627. The Astrophysical journal, 777(2), Article 122. https://doi.org/10.1088/0004-637x/777/2/122

We present the analysis of a deep Chandra observation of a ~2 L * late-type galaxy, ESO 137-002, in the closest rich cluster A3627. The Chandra data reveal a long (gsim40 kpc) and narrow tail with a nearly constant width (~3 kpc) to the southeast of... Read More about The narrow X-ray tail and double Hα tails of ESO 137-002 in A3627.

Viscous Kelvin-Helmholtz instabilities in highly ionised plasmas (2013)
Journal Article
Roediger, E., Kraft, R. P., Nulsen, P., Churazov, E., Forman, W., Brüggen, M., & Kokotanekova, R. (2013). Viscous Kelvin-Helmholtz instabilities in highly ionised plasmas. Monthly notices of the Royal Astronomical Society, 436(2), 1721-1740. https://doi.org/10.1093/mnras/stt1691

Transport coefficients in highly ionised plasmas like the intra-cluster medium (ICM) are still ill-constrained. They influence various processes, among them the mixing at shear flow interfaces due to the Kelvin-Helmholtz instability (KHI). The observ... Read More about Viscous Kelvin-Helmholtz instabilities in highly ionised plasmas.

Kelvin-Helmholtz instabilities at the sloshing cold fronts in the Virgo cluster as a measure for the effective ICM viscosity (2013)
Journal Article
Roediger, E., Kraft, R. P., Forman, W. R., E. J. Nulsen, P., & Churazov, E. (2013). Kelvin-Helmholtz instabilities at the sloshing cold fronts in the Virgo cluster as a measure for the effective ICM viscosity. The Astrophysical journal, 764(1), Article 60. https://doi.org/10.1088/0004-637X/764/1/60

Sloshing cold fronts (CFs) arise from minor merger triggered gas sloshing. Their detailed structure depends on the properties of the intra-cluster medium (ICM): hydrodynamical simulations predict the CFs to be distorted by Kelvin-Helmholtz instabilit... Read More about Kelvin-Helmholtz instabilities at the sloshing cold fronts in the Virgo cluster as a measure for the effective ICM viscosity.