Search Results - "Readhead, C."

Constraining the Limiting Brightness Temperature and Doppler Factors for the Largest Sample of Radio-bright Blazars by Liodakis, Ioannis, Hovatta, Talvikki, Huppenkothen, Daniela, Kiehlmann, Sebastian, Max-Moerbeck, Walter, Readhead, Anthony C. S.

“…Relativistic effects dominate the emission of blazar jets, complicating our understanding of their intrinsic properties. Although many methods have been…”
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MOJAVE. XVII. Jet Kinematics and Parent Population Properties of Relativistically Beamed Radio-loud Blazars by Lister, M. L., Homan, D. C., Hovatta, T., Kellermann, K. I., Kiehlmann, S., Kovalev, Y. Y., Max-Moerbeck, W., Pushkarev, A. B., Readhead, A. C. S., Ros, E., Savolainen, T.

“…We present results from a parsec-scale jet kinematics study of 409 bright radio-loud active galactic nuclei (AGNs) based on 15 GHz Very Long Baseline Array…”
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A method for the estimation of the significance of cross-correlations in unevenly sampled red-noise time series by Max-Moerbeck, W., Richards, J. L., Hovatta, T., Pavlidou, V., Pearson, T. J., Readhead, A. C. S.

“…We present a practical implementation of a Monte Carlo method to estimate the significance of cross-correlations in unevenly sampled time series of data, whose…”
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Multiwavelength cross-correlations and flaring activity in bright blazars by Liodakis, I, Romani, R W, Filippenko, A V, Kiehlmann, S, Max-Moerbeck, W, Readhead, A C S, Zheng, W

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Revisiting the Distance to Radio Loops I and IV Using Gaia and Radio/Optical Polarization Data by Panopoulou, G. V., Dickinson, C., Readhead, A. C. S., Pearson, T. J., Peel, M. W.

“…Abstract Galactic synchrotron emission exhibits large angular scale features known as radio spurs and loops. Determining the physical size of these structures…”
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Compact Symmetric Objects. I. Toward a Comprehensive Bona Fide Catalog by Kiehlmann, S., Lister, M. L., Readhead, A. C. S, Liodakis, I., O’Neill, Sandra, Pearson, T. J., Sheldahl, Evan, Siemiginowska, Aneta, Tassis, K., Taylor, G. B., Wilkinson, P. N.

“…Abstract Compact symmetric objects (CSOs) are jetted active galactic nuclei (AGN) with overall projected size <1 kpc. The classification was introduced to…”
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Demonstration of Magnetic Field Tomography with Starlight Polarization toward a Diffuse Sightline of the ISM by Panopoulou, Georgia V., Tassis, Konstantinos, Skalidis, Raphael, Blinov, Dmitriy, Liodakis, Ioannis, Pavlidou, Vasiliki, Potter, Stephen B., Ramaprakash, Anamparambu N., Readhead, Anthony C. S., Wehus, Ingunn K.

“…The availability of large data sets with stellar distance and polarization information will enable a tomographic reconstruction of the…”
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Compact Symmetric Objects. III. Evolution of the High-luminosity Branch and a Possible Connection with Tidal Disruption Events by Readhead, A. C. S, Ravi, V., Blandford, R. D., Sullivan, A. G., Somalwar, J., Begelman, M. C., Birkinshaw, M., Liodakis, I., Lister, M. L., Pearson, T. J., Taylor, G. B., Wilkinson, P. N., Globus, N., Kiehlmann, S., Lawrence, C. R., Murphy, D., O’Neill, S., Pavlidou, V., Sheldahl, E., Siemiginowska, A., Tassis, K.

“…Abstract We use a sample of 54 compact symmetric objects (CSOs) to confirm that there are two unrelated CSO classes: an edge-dimmed, low-luminosity class (CSO…”
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Time correlation between the radio and gamma-ray activity in blazars and the production site of the gamma-ray emission by Max-Moerbeck, W., Hovatta, T., Richards, J. L., King, O. G., Pearson, T. J., Readhead, A. C. S., Reeves, R., Shepherd, M. C., Stevenson, M. A., Angelakis, E., Fuhrmann, L., Grainge, K. J. B., Pavlidou, V., Romani, R. W., Zensus, J. A.

“…In order to determine the location of the gamma-ray emission site in blazars, we investigate the time-domain relationship between their radio and gamma-ray…”
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RoboPol: connection between optical polarization plane rotations and gamma-ray flares in blazars by Blinov, D., Pavlidou, V., Papadakis, I., Kiehlmann, S., Liodakis, I., Panopoulou, G. V., Angelakis, E., Baloković, M., Hovatta, T., King, O. G., Kus, A., Kylafis, N., Mahabal, A., Maharana, S., Myserlis, I., Paleologou, E., Papamastorakis, I., Pazderski, E., Pearson, T. J., Ramaprakash, A., Readhead, A. C. S., Reig, P., Tassis, K., Zensus, J. A.

“…Abstract We use results of our 3 yr polarimetric monitoring programme to investigate the previously suggested connection between rotations of the polarization…”
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RoboPol: the optical polarization of gamma-ray-loud and gamma-ray-quiet blazars by Angelakis, E, Hovatta, T, Blinov, D, Pavlidou, V, Kiehlmann, S, Myserlis, I, Bottcher, M, Mao, P, Panopoulou, G V, Liodakis, I, King, O G, Balokovic, M, Kus, A, Kylafis, N, Mahabal, A, Marecki, A, Paleologou, E, Papadakis, I, Papamastorakis, I, Pazderski, E, Pearson, T J, Prabhudesai, S, Ramaprakash, A N, Readhead, A C S, Reig, P, Tassis, K, Urry, M, Zensus, J A

“…We present average R-band optopolarimetric data, as well as variability parameters, from the first and second RoboPol observing season. We investigate whether…”
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SPRITEly: Time-domain Millimeter Interferometry at the Owens Valley Radio Observatory by Yurk, Nitika Yadlapalli, Ravi, Vikram, Hodges, Mark W., Lamb, James W., Hobbs, Richard, Woody, David P., Readhead, Anthony C. S.

“…Abstract Though the time-domain millimeter sky is yet to be well characterized, the scarcity of millimeter observing resources in the world at present hampers…”
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A γ-Ray-emitting Blazar at Redshift 3.64: Fermi-LAT and OVRO Observations of PKS 0201+113 by Lei, Hai, Zhang, Ying-Kang, Jiang, Xiong, Kiehlmann, S., Readhead, A. C. S., Chen, Liang, Liao, Neng-Hui, An, Tao

“…Abstract High-redshift ( z > 3) γ -ray blazars are rare, but they are crucial for our understanding of jet evolution, γ -ray production and propagation, and…”
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Birth of a relativistic outflow in the unusual γ-ray transient Swift J164449.3+573451 by Zauderer, B. A., Berger, E., Soderberg, A. M., Loeb, A., Narayan, R., Frail, D. A., Petitpas, G. R., Brunthaler, A., Chornock, R., Carpenter, J. M., Pooley, G. G., Mooley, K., Kulkarni, S. R., Margutti, R., Fox, D. B., Nakar, E., Patel, N. A., Volgenau, N. H., Culverhouse, T. L., Bietenholz, M. F., Rupen, M. P., Max-Moerbeck, W., Readhead, A. C. S., Richards, J., Shepherd, M., Storm, S., Hull, C. L. H.

“…Birth of a black-hole relativistic jet Two groups report observations of the X-ray source Swift J164449.3+573451, which was discovered when it triggered the…”
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RoboPol: AGN polarimetric monitoring data by Blinov, D, Kiehlmann, S, Pavlidou, V, Panopoulou, G V, Skalidis, R, Angelakis, E, Casadio, C, Einoder, E N, Hovatta, T, Kokolakis, K, Kougentakis, A, Kus, A, Kylafis, N, Kyritsis, E, Lalakos, A, Liodakis, I, Maharana, S, Makrydopoulou, E, Mandarakas, N, Maragkakis, G M, Myserlis, I, Papadakis, I, Paterakis, G, Pearson, T J, Ramaprakash, A N, Readhead, A C S, Reig, P, Słowikowska, A, Tassis, K, Xexakis, K, Żejmo, M, Zensus, J A

“…ABSTRACT We present uniformly reprocessed and re-calibrated data from the RoboPol programme of optopolarimetric monitoring of active galactic nuclei (AGNs),…”
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RoboPol: first season rotations of optical polarization plane in blazars by Blinov, D., Pavlidou, V., Papadakis, I., Kiehlmann, S., Panopoulou, G., Liodakis, I., King, O. G., Angelakis, E., Baloković, M., Das, H., Feiler, R., Fuhrmann, L., Hovatta, T., Khodade, P., Kus, A., Kylafis, N., Mahabal, A., Myserlis, I., Modi, D., Pazderska, B., Pazderski, E., Papamastorakis, I., Pearson, T. J., Rajarshi, C., Ramaprakash, A., Reig, P., Readhead, A. C. S., Tassis, K., Zensus, J. A.

“…We present first results on polarization swings in optical emission of blazars obtained by RoboPol, a monitoring programme of an unbiased sample of gamma-ray…”
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RoboPol: a four-channel optical imaging polarimeter by Ramaprakash, A N, Rajarshi, C V, Das, H K, Khodade, P, Modi, D, Panopoulou, G, Maharana, S, Blinov, D, Angelakis, E, Casadio, C, Fuhrmann, L, Hovatta, T, Kiehlmann, S, King, O G, Kylafis, N, Kougentakis, A, Kus, A, Mahabal, A, Marecki, A, Myserlis, I, Paterakis, G, Paleologou, E, Liodakis, I, Papadakis, I, Papamastorakis, I, Pavlidou, V, Pazderski, E, Pearson, T J, Readhead, A C S, Reig, P, Słowikowska, A, Tassis, K, Zensus, J A

“…ABSTRACT We present the design and performance of RoboPol, a four-channel optical polarimeter operating at the Skinakas Observatory in Crete, Greece. RoboPol…”
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Compact Symmetric Objects. II. Confirmation of a Distinct Population of High-luminosity Jetted Active Galaxies by Kiehlmann, S., Readhead, A. C. S., O’Neill, S., Wilkinson, P. N., Lister, M. L., Liodakis, I., Bruzewski, S., Pavlidou, V., Pearson, T. J., Sheldahl, E., Siemiginowska, A., Tassis, K., Taylor, G. B.

“…Abstract Compact symmetric objects (CSOs) are compact (<1 kpc), jetted active galactic nuclei (AGN), whose jet axes are not aligned close to the line of sight,…”
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Connecting radio variability to the characteristics of gamma-ray blazars by Richards, J. L., Hovatta, T., Max-Moerbeck, W., Pavlidou, V., Pearson, T. J., Readhead, A. C. S.

“…We present results from four years of twice-weekly 15 GHz radio monitoring of about 1500 blazars with the Owens Valley Radio Observatory 40 m telescope. Using…”
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RoboPol: do optical polarization rotations occur in all blazars? by Blinov, D., Pavlidou, V., Papadakis, I., Kiehlmann, S., Liodakis, I., Panopoulou, G. V., Pearson, T. J., Angelakis, E., Baloković, M., Hovatta, T., Joshi, V., King, O. G., Kus, A., Kylafis, N., Mahabal, A., Marecki, A., Myserlis, I., Paleologou, E., Papamastorakis, I., Pazderski, E., Prabhudesai, S., Ramaprakash, A., Readhead, A. C. S., Reig, P., Tassis, K., Zensus, J. A.

“…We present a new set of optical polarization plane rotations in blazars, observed during the third year of operation of RoboPol. The entire set of rotation…”
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