Zobrazeno 1 - 10
of 160
pro vyhledávání: '"Readhead, Anthony C. S."'
Autor:
Kouch, Pouya M., Lindfors, Elina, Hovatta, Talvikki, Liodakis, Ioannis, Koljonen, Karri I. I., Nilsson, Kari, Kiehlmann, Sebastian, Max-Moerbeck, Walter, Readhead, Anthony C. S., Reeves, Rodrigo A., Pearson, Timothy J., Jormanainen, Jenni, Ramazani, Vandad Fallah, Graham, Matthew J.
Publikováno v:
A&A 690, A111 (2024)
The origin of high-energy (HE) astrophysical neutrinos has remained an elusive hot topic in the field of HE astrophysics for the past decade. Apart from a handful of individual associations, the vast majority of HE neutrinos arise from unknown source
Externí odkaz:
http://arxiv.org/abs/2407.07153
Autor:
Maharana, Siddharth, Ramaprakash, A. N., Rajarshi, Chaitanya, Khodade, Pravin, Joshi, Bhushan, Chordia, Pravin, Kohok, Abhay, Anche, Ramya M., Modi, Deepa, Kypriotakis, John A., Deokar, Amit, Kinjawadekar, Aditya, Potter, Stephen B., Blinov, Dmitry, Eriksen, Hans Kristian, Falalaki, Myrto, Gajjar, Hitesh, Ghosh, Tuhin, Gjerløw, Eirik, Kiehlmann, Sebastain, Liodakis, Ioannis, Mandarakas, Nikolaos, Panopoulou, Georgia V., Pavlidou, Vasiliki, Pearson, Timothy J., Pelgrims, Vincent, Readhead, Anthony C. S., Skalidis, Raphael, Tassis, Konstantinos, Uppal, Namita, Wehus, Ingunn K.
Publikováno v:
Proceedings Volume 13096, Ground-based and Airborne Instrumentation for Astronomy X; 130967P (2024)
Wide-Area Linear Optical Polarimeter (WALOP)-South is the first wide-field and survey-capacity polarimeter in the optical wavelengths. On schedule for commissioning in 2024, it will be mounted on the 1 m SAAO telescope in Sutherland Observatory, Sout
Externí odkaz:
http://arxiv.org/abs/2406.19428
Autor:
Lei, Hai, Zhang, Ying-Kang, Jiang, Xiong, Kiehlmann, Sebastian, Readhead, Anthony C. S., Chen, Liang, Liao, Neng-Hui, An, Tao
High-redshift ($z >3$) $\gamma$-ray blazars are rare, but they are crucial for our understanding of jet evolution, $\gamma$-ray production and propagation, and the growth of supermassive black holes in the early universe. A new analysis of Fermi-LAT
Externí odkaz:
http://arxiv.org/abs/2406.03658
Autor:
Sullivan, Andrew G., Blandford, Roger D., Begelman, Mitchell C., Birkinshaw, Mark, Readhead, Anthony C. S.
Double lobe radio sources associated with active galactic nuclei represent one of the longest studied groups in radio astronomy. A particular sub-group of double radio sources comprises the compact symmetric objects (CSOs). CSOs are distinguished by
Externí odkaz:
http://arxiv.org/abs/2401.14399
Autor:
Cheong, Whee Yeon, Lee, Sang-Sung, Kim, Sang-Hyun, Kang, Sincheol, Kim, Jae Young, Rani, Bindu, Readhead, Anthony C. S., Kiehlmann, Sebastian, Lähteenmäki, Anne, Tornikoski, Merja, Tammi, Joni, Ramakrishnan, Venkatessh, Agudo, Iván, Fuentes, Antonio, Traianou, Efthalia, Escudero, Juan, Thum, Clemens, Myserlis, Ioannis, Casadio, Carolina, Gurwell, Mark
We present the multiwavelength flaring activity of the blazar AO 0235+164 during its recent active period from 2013 to 2019. From a discrete correlation function (DCF) analysis, we find a significant (>95%) correlation between radio and $\gamma$-ray
Externí odkaz:
http://arxiv.org/abs/2310.16296
Autor:
Dunne, Delaney A., Cleary, Kieran A., Breysse, Patrick C., Chung, Dongwoo T., Ihle, Havard T., Bond, J. Richard, Eriksen, Hans Kristian, Gundersen, Joshua Ott, Keating, Laura C., Kim, Junhan, Lunde, Jonas Gahr Sturtzel, Murray, Norman, Padmanabhan, Hamsa, Philip, Liju, Stutzer, Nils-Ole, Tolgay, Doga, Wehus, Ingunn Katherine, Church, Sarah E., Gaier, Todd, Harris, Andrew I., Hobbs, Richard, Lamb, James W., Lawrence, Charles R., Readhead, Anthony C. S., Woody, David P.
We present a new upper limit on the cosmic molecular gas density at $z=2.4-3.4$ obtained using the first year of observations from the CO Mapping Array Project (COMAP). COMAP data cubes are stacked on the 3D positions of 243 quasars selected from the
Externí odkaz:
http://arxiv.org/abs/2304.09832
Autor:
Maharana, Siddharth, Anche, Ramya M., Ramaprakash, A. N., Joshi, Bhushan, Basyrov, Artem, Blinov, Dmitry, Casadio, Carolina, Deka, Kishan, Eriksen, Hans Kristian, Ghosh, Tuhin, Gjerløw, Eirik, Kypriotakis, John A., Kiehlmann, Sebastian, Mandarakas, Nikolaos, Panopoulou, Georgia V., Papadaki, Katerina, Pavlidou, Vasiliki, Pearson, Timothy J., Pelgrims, Vincent, Potter, Stephen B., Readhead, Anthony C. S., Skalidis, Raphael, Svalheim, Trygve Leithe, Tassis, Konstantinos, Wehus, Ingunn K.
Publikováno v:
J. of Astronomical Telescopes, Instruments, and Systems, 8(3), 038004 (2022)
The Wide-Area Linear Optical Polarimeter (WALOP)-South instrument is an upcoming wide-field and high-accuracy optical polarimeter to be used as a survey instrument for carrying out the Polar-Areas Stellar Imaging in Polarization High Accuracy Experim
Externí odkaz:
http://arxiv.org/abs/2208.12441
Autor:
Goyal, Arti, Soida, Marian, Stawarz, Lukasz, Wiita, Paul J., Nilsson, Kari, Jorstad, Svetlana, Marscher, Alan P., Aller, Margo F., Aller, Hugh D., Lahteenmaki, Anne, Hovatta, Talvikki, Zola, Staszek, Nalewajko, Krzysztof, Tornikoski, Merja, Tammi, Joni, Hodges, Mark, Kiehlmann, Sebastian, Readhead, Anthony C. S., Max-Moerbeck, Walter, Lindfors, Elina, Ramazani, Vandad Fallah, Reichart, D. E., Caton, D. B., Valverde, Janeth, Horan, Deirdre, Ojha, Roopesh, van Zyl, Pfesesani
We present the results of variability power spectral density (PSD) analysis using multiwavelength radio to GeV\,$\gamma$-ray light curves covering decades/years to days/minutes timescales for the blazars 3C 279 and PKS 1510-089. The PSDs are modeled
Externí odkaz:
http://arxiv.org/abs/2112.04194
Autor:
Readhead, Anthony C. S., Kiehlmann, Sebastian, Lister, Matthew L., O'Neill, Sandra, Pearson, Timothy J., Sheldahl, Evan, Siemiginowska, Aneta, Taylor, Gregory B., Wilkinson, Peter N.
Compact Symmetric Objects (CSOs), young jetted-AGN of overall projected size <1 kpc, are of great interest due to their youth and evolution. The classification was introduced to distinguish between ~95% of powerful compact extragalactic radio sources
Externí odkaz:
http://arxiv.org/abs/2111.08818
Autor:
Breysse, Patrick C., Chung, Dongwoo T., Cleary, Kieran A., Ihle, Håvard T., Padmanabhan, Hamsa, Silva, Marta B., Bond, J. Richard, Borowska, Jowita, Catha, Morgan, Church, Sarah E., Dunne, Delaney A., Eriksen, Hans Kristian, Foss, Marie Kristine, Gaier, Todd, Gundersen, Joshua Ott, Harris, Andrew I., Hobbs, Richard, Keating, Laura, Lamb, James W., Lawrence, Charles R., Lunde, Jonas G. S., Murray, Norman, Pearson, Timothy J., Philip, Liju, Rasmussen, Maren, Readhead, Anthony C. S., Rennie, Thomas J., Stutzer, Nils-Ole, Viero, Marco P., Watts, Duncan J., Wehus, Ingunn Katherine, Woody, David P.
We introduce COMAP-EoR, the next generation of the Carbon Monoxide Mapping Array Project aimed at extending CO intensity mapping to the Epoch of Reionization. COMAP-EoR supplements the existing 30 GHz COMAP Pathfinder with two additional 30 GHz instr
Externí odkaz:
http://arxiv.org/abs/2111.05933