Search Results - "Heesen, Volker"

The radio continuum perspective on cosmic-ray transport in external galaxies by Heesen, Volker

“…Radio continuum observations of external galaxies provide us with an excellent outside view on the distribution of cosmic-ray electrons in the disc and halo…”
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CHANG-ES. XXXII. Spatially Resolved Thermal–Nonthermal Separation from Radio Data Alone—New Probes into NGC 3044 and NGC 5775 by Irwin, Judith, Cook, Tanden, Stein, Michael, Dettmar, Ralf-Juergen, Heesen, Volker, Wang, Q. Daniel, Wiegert, Theresa, Stein, Yelena, Vargas, Carlos

“…Abstract We have carried out spatially resolved thermal–nonthermal separation on two edge-on galaxies, NGC 3044 and NGC 5775, using only radio data. Narrowband…”
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THE MAGNETIZED GALACTIC WIND AND SYNCHROTRON HALO OF THE STARBURST DWARF GALAXY IC 10 by Chy y, Krzysztof T., Drzazga, Robert T., Beck, Rainer, Urbanik, Marek, Heesen, Volker, Bomans, Dominik J.

“…ABSTRACT We aim to explore whether strong magnetic fields can be effectively generated in low-mass dwarf galaxies and, if so, whether such fields can be…”
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CHANG-ES XXXI—A Decade of CHANG-ES: What We Have Learned from Radio Observations of Edge-on Galaxies by Irwin, Judith, Beck, Rainer, Cook, Tanden, Dettmar, Ralf-Jürgen, English, Jayanne, Heesen, Volker, Henriksen, Richard, Jiang, Yan, Li, Jiang-Tao, Lu, Li-Yuan, Mele, Crystal, Müller, Ancla, Murphy, Eric, Porter, Troy, Rand, Richard, Skeggs, Nathan, Stein, Michael, Stein, Yelena, Stil, Jeroen, Strong, Andrew, Walterbos, Rene, Wang, Q. Daniel, Wiegert, Theresa, Yang, Yang

“…CHANG-ES (Continuum Halos in Nearby Galaxies—an EVLA Survey) is an ambitious project to target 35 nearby disk galaxies that are edge-on to the line of sight…”
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Azimuthal anisotropy of magnetic fields in the circumgalactic medium driven by galactic feedback processes by Ramesh, Rahul, Nelson, Dylan, Heesen, Volker, Brüggen, Marcus

“…ABSTRACT We use the TNG50 cosmological magnetohydrodynamical simulation of the IllustrisTNG project to show that magnetic fields in the circumgalactic medium…”
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Advective and diffusive cosmic ray transport in galactic haloes by Heesen, Volker, Dettmar, Ralf-Jürgen, Krause, Marita, Beck, Rainer, Stein, Yelena

“…We present 1D cosmic ray transport models, numerically solving equations of pure advection and diffusion for the electrons and calculating synchrotron emission…”
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New insights into the interstellar medium of the dwarf galaxy IC 10: connection between magnetic fields, the radio–infrared correlation and star formation by Basu, Aritra, Roychowdhury, Sambit, Heesen, Volker, Beck, Rainer, Brinks, Elias, Westcott, Jonathan, Hindson, Luke

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A spatially resolved radio spectral index study of the dwarf irregular galaxy NGC 1569 by Westcott, Jonathan, Brinks, Elias, Hindson, Luke, Beswick, Robert, Heesen, Volker

“…Abstract We study the resolved radio continuum spectral energy distribution of the dwarf irregular galaxy, NGC 1569, on a beam-by-beam basis to isolate and…”
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Radio constraints on dark matter annihilation in Canes Venatici I with LOFAR by Vollmann, Martin, Heesen, Volker, W. Shimwell, Timothy, Hardcastle, Martin J, Brüggen, Marcus, Sigl, Günter, J. A. Röttgering, Huub

“…ABSTRACT Dwarf galaxies are dark matter (DM) dominated and therefore promising targets for the search for weakly interacting massive particles (WIMPs), which…”
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FR II radio galaxies at low frequencies – I. Morphology, magnetic field strength and energetics by Harwood, Jeremy J., Croston, Judith H., Intema, Huib T., Stewart, Adam J., Ineson, Judith, Hardcastle, Martin J., Godfrey, Leith, Best, Philip, Brienza, Marisa, Heesen, Volker, Mahony, Elizabeth K., Morganti, Raffaella, Murgia, Matteo, Orrú, Emanuela, Röttgering, Huub, Shulevski, Aleksandar, Wise, Michael W.

“…Due to their steep spectra, low-frequency observations of Fanaroff–Riley type II (FR II) radio galaxies potentially provide key insights in to the morphology,…”
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The non-thermal superbubble in IC 10: the generation of cosmic ray electrons caught in the act by Heesen, Volker, Brinks, Elias, Krause, Martin G. H., Harwood, Jeremy J., Rau, Urvashi, Rupen, Michael P., Hunter, Deidre A., Chyży, Krzysztof T., Kitchener, Ged

“…Abstract Superbubbles are crucial for stellar feedback, with supposedly high (of the order of 10 per cent) thermalization rates. We combined multiband radio…”
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The radio continuum perspective on cosmic-ray transport in external galaxies by Heesen, Volker

“…Astrophysics and Space Science, 366, 117 (2021) Radio continuum observations of external galaxies provide us with an excellent outside view on the distribution…”
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The impact of a young radio galaxy: clues from the cosmic ray electron population by Heesen, Volker, Croston, Judith H., Harwood, Jeremy J., Hardcastle, Martin J., Hota, Ananda

“…In the framework of hierarchical structure formation, active galactic nuclei (AGN) feedback shapes the galaxy luminosity function. Low luminosity, galaxy-scale…”
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Comment on "Constraining the annihilating dark matter mass by the radio continuum spectral data of NGC4214 galaxy" by Heesen, Volker, Brüggen, Marcus

“…In their recent paper, Chan and Lee discuss an interesting possibility: radio continuum emission from a dwarf irregular galaxy may be used to constrain upper…”
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H I ASYMMETRIES IN THE ISOLATED GALAXY CIG 292 by PORTAS, António, SCOTT, Tom C, ATHANASSOULA, E, MIN YUN, BRINKS, Elias, BOSMA, Albert, VERDES-MONTENEGRO, Lourdes, HEESEN, Volker, ESPADA, Daniel, VERLEY, Simon, SULENTIC, Jack, SENGUPTA, Chandreyee

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Azimuthal Anisotropy of Magnetic Fields in the Circumgalactic Medium Driven by Galactic Feedback Processes by Ramesh, Rahul, Nelson, Dylan, Heesen, Volker, Brüggen, Marcus

“…We use the TNG50 cosmological magnetohydrodynamical simulation of the IllustrisTNG project to show that magnetic fields in the circumgalactic medium (CGM) have…”
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Cosmic-ray electron transport in the galaxy M 51 by Dörner, Julien, Reichherzer, Patick, Tjus, Julia Becker, Heesen, Volker

“…A&A 669, A111 (2023) Context. Indirect observations of the cosmic-ray electron (CRE) distribution via synchrotron emission is crucial for deepening the…”
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CHANG-ES XXXII: Spatially Resolved Thermal/Nonthermal Separation from Radio Data Alone -- New Probes into NGC 3044 and NGC 5775 by Irwin, Judith, Cook, Tanden, Stein, Michael, Dettmar, Ralf-Juergen, Heesen, Volker, Wang, Q. Daniel, Wiegert, Theresa, Stein, Yelena, Vargas, Carlos

“…We have carried out spatially resolved thermal/nonthermal separation on two edge-on galaxies, NGC~3044 and NGC~5775, using only radio data. Narrow-band imaging…”
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Structure, dynamical impact and origin of magnetic fields in nearby galaxies in the SKA era by Beck, R., Bomans, D., Colafrancesco, S., Dettmar, R.J., Ferriere, K., Fletcher, A., Heald, G., Heesen, V., Horellou, Cathy, Krause, M., Lou, Y.-Q., Mao, S. A., Paladino, R., Schinnerer, E., Sokoloff, D., Stil, J., Tabatabaei, F.

“…Magnetic fields are an important ingredient of the interstellar medium (ISM). Besides their importancefor star formation, they govern the transport of cosmic…”
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Magnetic Field Tomography in Nearby Galaxies with the Square Kilometre Array by Heald, G., Beck, R., de Blok, W.J.G., Dettmar, R.J., Fletcher, A., Gaensler, B., Haverkorn, M., Heesen, V., Horellou, Cathy, Krause, M., Mao, S. A., Oppermann, N., Scaife, A., Sokoloff, D., Stil, J., Tabatabaei, F., Takahashi, K., Taylor, R., Williams, A.

“…Magnetic fields play an important role in shaping the structure and evolution of the interstellarmedium (ISM) of galaxies, but the details of this relationship…”
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