Zobrazeno 1 - 10
of 1 780
pro vyhledávání: '"A. Hajela"'
Autor:
T. Eftekhari, A. Tchekhovskoy, K. D. Alexander, E. Berger, R. Chornock, T. Laskar, R. Margutti, Y. Yao, Y. Cendes, S. Gomez, A. Hajela, D. R. Pasham
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 2, p 149 (2024)
The tidal disruption event (TDE) AT2022cmc represents the fourth known example of a relativistic jet produced by the tidal disruption of a stray star, providing a unique probe of the formation and evolution of relativistic jets in otherwise dormant s
Externí odkaz:
https://doaj.org/article/7d481c19b3004d51924d71d85bb5dec4
Autor:
Y. Cendes, E. Berger, K. D. Alexander, R. Chornock, R. Margutti, B. Metzger, M. H. Wieringa, M. F. Bietenholz, A. Hajela, T. Laskar, M. C. Stroh, G. Terreran
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 2, p 185 (2024)
We present radio observations of 23 optically discovered tidal disruption events (TDEs) on timescales of ∼500–3200 days postdiscovery. We detect nine new TDEs that did not have detectable radio emission at earlier times, indicating a late-time br
Externí odkaz:
https://doaj.org/article/fff93b09e029486e960e77a85b7f2450
Autor:
Nicholl, M., Pasham, D. R., Mummery, A., Guolo, M., Gendreau, K., Dewangan, G. C., Ferrara, E. C., Remillard, R., Bonnerot, C., Chakraborty, J., Hajela, A., Dhillon, V. S., Gillan, A. F., Greenwood, J., Huber, M. E., Janiuk, A., Salvesen, G., van Velzen, S., Aamer, A., Alexander, K. D., Angus, C. R., Arzoumanian, Z., Auchettl, K., Berger, E., de Boer, T., Cendes, Y., Chambers, K. C., Chen, T. -W., Chornock, R., Fulton, M. D., Gao, H., Gillanders, J. H., Gomez, S., Gompertz, B. P., Fabian, A. C., Herman, J., Ingram, A., Kara, E., Laskar, T., Lawrence, A., Lin, C. -C., Lowe, T. B., Magnier, E. A., Margutti, R., McGee, S. L., Minguez, P., Moore, T., Nathan, E., Oates, S. R., Patra, K. C., Ramsden, P., Ravi, V., Ridley, E. J., Sheng, X., Smartt, S. J., Smith, K. W., Srivastav, S., Stein, R., Stevance, H. F., Turner, S. G. D., Wainscoat, R. J., Weston, J., Wevers, T., Young, D. R.
Quasi-periodic Eruptions (QPEs) are luminous bursts of soft X-rays from the nuclei of galaxies, repeating on timescales of hours to weeks. The mechanism behind these rare systems is uncertain, but most theories involve accretion disks around supermas
Externí odkaz:
http://arxiv.org/abs/2409.02181
Autor:
Hajela, A., Alexander, K. D., Margutti, R., Chornock, R., Bietenholz, M., Christy, C. T., Stroh, M., Terreran, G., Saxton, R., Komossa, S., Bright, J. S., Ramirez-Ruiz, E., Coppejans, D. L., Leung, J. K., Cendes, Y., Wiston, E., Laskar, T., Horesh, A., Schroeder, G., J., Nayana A., Wieringa, M. H., Velez, N., Berger, E., Blanchard, P. K., Eftekhari, T., Gomez, S., Nicholl, M., Sears, H., Zauderer, B. A.
We present the results from an extensive follow-up campaign of the Tidal Disruption Event (TDE) ASASSN-15oi spanning $\delta t \sim 10 - 3000$ d, offering an unprecedented window into the multiwavelength properties of a TDE during its first $\approx
Externí odkaz:
http://arxiv.org/abs/2407.19019
Autor:
Ibrahimzade, Dina, Margutti, R., Bright, J. S., Blanchard, P., Paterson, K., Lin, D., Sears, H., Polzin, A., Andreoni, I., Schroeder, G., Alexander, K. D., Berger, E., Coppejans, D. L., Hajela, A., Irwin, J., Laskar, T., Metzger, B. D., Rastinejad, J. C., Rhodes, L.
Fast X-ray Transients (FXTs) are a new observational class of phenomena with no clear physical origin. This is at least partially a consequence of limited multi-wavelength follow up of this class of transients in real time. Here we present deep optic
Externí odkaz:
http://arxiv.org/abs/2407.07257
Autor:
Eftekhari, T., Tchekhovskoy, A., Alexander, K. D., Berger, E., Chornock, R., Laskar, T., Margutti, R., Yao, Y., Cendes, Y., Gomez, S., Hajela, A., Pasham, D. R.
The tidal disruption event (TDE) AT2022cmc represents the fourth known example of a relativistic jet produced by the tidal disruption of a stray star providing a unique probe of the formation and evolution of relativistic jets in otherwise dormant su
Externí odkaz:
http://arxiv.org/abs/2404.10036
Autor:
Cendes, Yvette, Berger, Edo, Alexander, Kate D., Chornock, Ryan, Margutti, Raffaella, Metzger, Brian, Wieringa, Mark H., Bietenholz, Michael F., Hajela, Aprajita, Laskar, Tanmoy, Stroh, Michael C., Terreran, Giacomo
Publikováno v:
The Astrophysical Journal, Volume 971, Number 2, 2024
We present radio observations of 23 optically discovered tidal disruption events (TDEs) on timescales of 500-3200 days post discovery. We detect nine new TDEs that did not have detectable radio emission at earlier times, indicating a late-time bright
Externí odkaz:
http://arxiv.org/abs/2308.13595
We present a new constraint on the Hubble constant $H_0$ using the latest measurements of the electromagnetic counterpart to the gravitational wave (GW) event GW170817. We use the latest optical, X-ray and radio observations of the afterglow up to $\
Externí odkaz:
http://arxiv.org/abs/2305.19914
Autor:
Kuncarayakti, H., Sollerman, J., Izzo, L., Maeda, K., Yang, S., Schulze, S., Angus, C. R., Aubert, M., Auchettl, K., Della Valle, M., Dessart, L., Hinds, K., Kankare, E., Kawabata, M., Lundqvist, P., Nakaoka, T., Perley, D., Raimundo, S. I., Strotjohann, N. L., Taguchi, K., Cai, Y. -Z., Charalampopoulos, P., Fang, Q., Fraser, M., Gutierrez, C. P., Imazawa, R., Kangas, T., Kawabata, K. S., Kotak, R., Kravtsov, T., Matilainen, K., Mattila, S., Moran, S., Murata, I., Salmaso, I., Anderson, J. P., Ashall, C., Bellm, E. C., Benetti, S., Chambers, K. C., Chen, T. -W., Coughlin, M., De Colle, F., Fremling, C., Galbany, L., Gal-Yam, A., Gromadzki, M., Groom, S. L., Hajela, A., Inserra, C., Kasliwal, M. M., Mahabal, A. A., Martin-Carrillo, A., Moore, T., Muller-Bravo, T. E., Nicholl, M., Ragosta, F., Riddle, R. L., Sharma, Y., Srivastav, S., Stritzinger, M. D., Wold, A., Young, D. R.
Publikováno v:
A&A 678, A209 (2023)
We report on our study of supernova (SN) 2022xxf based on observations obtained during the first four months of its evolution. The light curves (LCs) display two humps of similar maximum brightness separated by 75 days, unprecedented for a broad-line
Externí odkaz:
http://arxiv.org/abs/2303.16925
Autor:
Liodakis, I., Koljonen, K. I. I., Blinov, D., Lindfors, E., Alexander, K. D., Hovatta, T., Berton, M., Hajela, A., Jormanainen, J., Kouroumpatzakis, K., Mandarakas, N., Nilsson, K.
Supermassive black holes have been known to disrupt passing stars producing outbursts called Tidal Disruption Events offering a unique view on the early stages of accretion disk and jet formation. The advent of large scale optical time-domain surveys
Externí odkaz:
http://arxiv.org/abs/2208.14465