Search Results - "Kadler, M"

On the Detection Potential of Blazar Flares for Current Neutrino Telescopes by Kreter, M., Kadler, M., Krauß, F., Mannheim, K., Buson, S., Ojha, R., Wilms, J., Böttcher, M.

“…Blazar jets are extreme environments, in which relativistic proton interactions with an ultraviolet photon field could give rise to photopion production…”
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Coincidence of a high-fluence blazar outburst with a PeV-energy neutrino event by Kadler, M., Krauß, F., Mannheim, K., Ojha, R., Müller, C., Schulz, R., Anton, G., Baumgartner, W., Beuchert, T., Buson, S., Carpenter, B., Eberl, T., Edwards, P. G., Eisenacher Glawion, D., Elsässer, D., Gehrels, N., Gräfe, C., Gulyaev, S., Hase, H., Horiuchi, S., James, C. W., Kappes, A., Kappes, A., Katz, U., Kreikenbohm, A., Kreter, M., Kreykenbohm, I., Langejahn, M., Leiter, K., Litzinger, E., Longo, F., Lovell, J. E. J., McEnery, J., Natusch, T., Phillips, C., Plötz, C., Quick, J., Ros, E., Stecker, F. W., Steinbring, T., Stevens, J., Thompson, D. J., Trüstedt, J., Tzioumis, A. K., Weston, S., Wilms, J., Zensus, J. A.

“…The astrophysical sources of the extraterrestrial, very high-energy neutrinos detected by the IceCube collaboration remain to be identified. Gamma-ray (γ-ray)…”
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New Compton-thick AGN in the circumnuclear H2O maser hosts UGC 3789 and NGC 6264 by Castangia, P., Panessa, F., Henkel, C., Kadler, M., Tarchi, A.

“…Large column densities, derived from X-ray studies, are typically measured towards active galactic nuclei (AGN) hosting water masers, especially when the …”
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Search for High-redshift Blazars with Fermi/LAT by Kreter, M., Gokus, A., Krauss, F., Kadler, M., Ojha, R., Buson, S., Wilms, J., Böttcher, M.

“…High-z blazars (z ≥ 2.5) are the most powerful class of persistent γ-ray sources in the universe. These objects possess the highest jet powers and luminosities…”
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Sub-Milliarcsecond Imaging of Quasars and Active Galactic Nuclei. III. Kinematics of Parsec-scale Radio Jets by Kellermann, K. I, Lister, M. L, Homan, D. C, Vermeulen, R. C, Cohen, M. H, Ros, E, Kadler, M, Zensus, J. A, Kovalev, Y. Y

“…We report the results of a 15 GHz (2 cm) multiepoch Very Long Baseline Array (VLBA) program, begun in 1994 to study the outflow in radio jets ejected from…”
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Rapid variability of Markarian 421 during extreme flaring as seen through the eyes of XMM–Newton by Gokus, A, Wilms, J, Kadler, M, Dorner, D, Nowak, M A, Kreikenbohm, A, Leiter, K, Bretz, T, Schleicher, B, Markowitz, A G, Pottschmidt, K, Mannheim, K, Kreykenbohm, I, Langejahn, M, McBride, F, Beuchert, T, Dauser, T, Kreter, M, Abhir, J, Baack, D, Balbo, M, Biland, A, Brand, K, Buss, J, Eisenberger, L, Elsaesser, D, Günther, P, Hildebrand, D, Linhoff, M, Paravac, A, Rhode, W, Sliusar, V, Hasan, S, Walter, R

“…ABSTRACT By studying the variability of blazars across the electromagnetic spectrum, it is possible to resolve the underlying processes responsible for rapid…”
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Relativistic Beaming and the Intrinsic Properties of Extragalactic Radio Jets by Cohen, M. H, Lister, M. L, Homan, D. C, Kadler, M, Kellermann, K. I, Kovalev, Y. Y, Vermeulen, R. C

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TANAMI: Multiwavelength and multimessenger observations of active galaxies by Kadler, M., Ojha, R., TANAMI Collaboration

“…Extragalactic jets launched from the immediate vicinity of supermassive black holes in radio‐loud active galactic nuclei (AGN) are key objects in modern…”
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A Connection Between Apparent VLBA Jet Speeds and Initial Active Galactic Nucleus Detections Made by the Fermi Gamma-Ray Observatory by Lister, M. L, Homan, D. C, Kadler, M, Kellermann, K. I, Kovalev, Y. Y, Ros, E, Savolainen, T, Zensus, J. A

“…In its first three months of operations, the Fermi Gamma-Ray Observatory has detected approximately one quarter of the radio-flux-limited MOJAVE sample of…”
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Detecting radio frequency interference in radio‐antenna arrays with the recurrent neural network algorithm by Burd, P. R., Mannheim, K., März, T., Ringholz, J., Kappes, A., Kadler, M.

“…Signal artifacts due to radio frequency interference (RFI) are a common nuisance in radio astronomy. Conventionally, the RFI‐affected data are tagged by an…”
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MOJAVE: Monitoring of Jets in Active Galactic Nuclei with VLBA Experiments. VII. Blazar Jet Acceleration by Homan, D. C, Kadler, M, Kellermann, K. I, Kovalev, Y. Y, Lister, M. L, Ros, E, Savolainen, T, Zensus, J. A

“…We discuss acceleration measurements for a large sample of extragalactic radio jets from the Monitoring Of Jets in Active Galactic Nuclei with VLBA Experiments…”
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Intrinsic Brightness Temperatures of AGN Jets by Homan, D. C, Kovalev, Y. Y, Lister, M. L, Ros, E, Kellermann, K. I, Cohen, M. H, Vermeulen, R. C, Zensus, J. A, Kadler, M

“…We present a new method for studying the intrinsic brightness temperatures of the parsec-scale jet cores of active galactic nuclei (AGNs). Our method uses…”
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Decomposing blazar spectra into lepto‐hadronic emission components by Gokus, A., Richter, S., Spanier, F., Kreter, M., Kadler, M., Mannheim, K., Wilms, J.

“…The recently reported coincidences between high‐energy neutrino events and major blazar outbursts reinforce the relevance of lepto‐hadronic emission models for…”
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Twelve and a Half Years of Observations of Centaurus a with the Rossi X-Ray Timing Explorer by Rothschild, R. E, Markowitz, A, Rivers, E, Suchy, S, Pottschmidt, K, Kadler, M, Müller, C, Wilms, J

“…The Rossi X-ray Timing Explorer (RXTE) has observed the nearest radio galaxy, Centaurus A (Cen A), in 13 intervals from 1996 August to 2009 February over the…”
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Gamma-Ray Emission from the Broad-Line Radio Galaxy 3C 111 by Hartman, R. C, Kadler, M, Tueller, J

“…The broad-line radio galaxy 3C 111 has been suggested as the counterpart of the -ray source 3EG J0416+3650. While 3C 111 meets most of the criteria for a…”
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From radio to TeV: the surprising spectral energy distribution of AP Librae by Sanchez, D. A., Giebels, B., Fortin, P., Horan, D., Szostek, A., Fegan, S., Baczko, A.-K., Finke, J., Kadler, M. L., Kovalev, Y. Y., Lister, M. L., Pushkarev, A. B., Savolainen, T.

“…Following the discovery of high-energy (HE; E > 10 MeV) and very-high-energy (VHE; E > 100 GeV) γ-ray emission from the low-frequency-peaked BL Lac (LBL)…”
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Spectral Analysis of the Accretion Flow in NGC 1052 with Suzaku by Brenneman, L. W, Weaver, K. A, Kadler, M, Tueller, J, Marscher, A, Ros, E, Zensus, A, Kovalev, Y.Y, Aller, M, Aller, H, Irwin, J, Kerp, J, Kaufmann, S

“…We present an analysis of the 101 ks, 2007 Suzaku spectrum of the low ionization nuclear emission region galaxy NGC 1052. The 0.5-10 keV continuum is well…”
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PKS 2123−463: a confirmed γ‐ray blazar at high redshift by D'Ammando, F., Rau, A., Schady, P., Finke, J., Orienti, M., Greiner, J., Kann, D. A., Ojha, R., Foley, A. R., Stevens, J., Blanchard, J. M., Edwards, P. G., Kadler, M., Lovell, J. E. J.

“…ABSTRACT The flat spectrum radio quasar (FSRQ) PKS 2123−463 was associated in the first Fermi‐Large Area Telescope (LAT) source catalogue with the γ‐ray source…”
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The Relation Between AGN Gamma-Ray Emission and Parsec-Scale Radio Jets by Kovalev, Y. Y, Aller, H. D, Aller, M. F, Homan, D. C, Kadler, M, Kellermann, K. I, Kovalev, Yu. A, Lister, M. L, McCormick, M. J, Pushkarev, A. B, Ros, E, Zensus, J. A

“…We have compared the radio emission from a sample of parsec-scale active galactic nucleus (AGN) jets as measured by the VLBA at 15 GHz, with their associated…”
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Doppler boosting, superluminal motion, and the kinematics of AGN jets by Kellermann, KI, Kovalev, Y Y, Lister, M L, Homan, D C, Kadler, M, Cohen, M H, Ros, E, Zensus, JA, Vermeulen, R C, Aller, M F, Aller, H D

“…Issue Title: Proceedings of the Fifth Stromlo Symposium: Disks, Winds and Jets - From Planets to Quasars We discuss results from a decade long program to study…”
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