Zobrazeno 1 - 10
of 12 063
pro vyhledávání: '"Pope, A J"'
Increasingly precise space-based photometry uncovers higher-order effects in transits, eclipses and phase curves which can be used to characterize exoplanets in novel ways. The subtle signature induced by a rotationally deformed exoplanet is determin
Externí odkaz:
http://arxiv.org/abs/2410.03449
Autor:
Callingham, J. R., Pope, B. J. S., Kavanagh, R. D., Bellotti, S., Daley-Yates, S., Damasso, M., Grießmeier, J. -M., Güdel, M., Günther, M., Kao, M. M., Klein, B., Mahadevan, S., Morin, J., Nichols, J. D., Osten, R. A., Pérez-Torres, M., Pineda, J. S., Rigney, J., Saur, J., Stefánsson, G., Turner, J. D., Vedantham, H., Vidotto, A. A., Villadsen, J., Zarka, P.
Radio detections of stellar systems provide a window onto stellar magnetic activity and the space weather conditions of extrasolar planets, information that is difficult to attain at other wavelengths. There have been recent advances observing aurora
Externí odkaz:
http://arxiv.org/abs/2409.15507
Autor:
Blakely, Dori, Johnstone, Doug, Cugno, Gabriele, Sivaramakrishnan, Anand, Tuthill, Peter, Dong, Ruobing, Pope, Benjamin J. S., Albert, Loïc, Charles, Max, Cooper, Rachel A., De Furio, Matthew, Desdoigts, Louis, Doyon, René, Francis, Logan, Greenbaum, Alexandra Z., Lafrenière, David, Lloyd, James P., Meyer, Michael R., Pueyo, Laurent, Ray, Shrishmoy, Sánchez-Bermúdez, Joel, Soulain, Anthony, Thatte, Deepashri, Thompson, William, Vandal, Thomas
We observed the planet-hosting system PDS 70 with the James Webb Interferometer, JWST's Aperture Masking Interferometric (AMI) mode within NIRISS. Observing with the F480M filter centered at 4.8 $\mu$m, we simultaneously fit geometrical models to the
Externí odkaz:
http://arxiv.org/abs/2404.13032
Autor:
Driessen, Laura N., Pritchard, Joshua, Murphy, Tara, Heald, George, Robrade, Jan, Das, Barnali, Duchesne, Stefan, Kaplan, David L., Lenc, Emil, Lynch, Christene R., Pope, Benjamin J. S., Rose, Kovi, Stelzer, Beate, Wang, Yuanming, Zic, Andrew
We present the Sydney Radio Star Catalogue, a new catalogue of stars detected at megahertz to gigahertz radio frequencies. It consists of 839 unique stars with 3,405 radio detections, more than doubling the previously known number of radio stars. We
Externí odkaz:
http://arxiv.org/abs/2404.07418
Autor:
Xin, Yinzi, Pueyo, Laurent, Laugier, Romain, Pogorelyuk, Leonid, Douglas, Ewan S., Pope, Benjamin J. S., Cahoy, Kerri L.
Directly observing exoplanets with coronagraphs is impeded by the presence of speckles from aberrations in the optical path, which can be mitigated in hardware with wavefront control as well as in post-processing. This work explores using an instrume
Externí odkaz:
http://arxiv.org/abs/2401.04269
Autor:
Bloot, Sanne, Callingham, Joseph R., Vedantham, Harish K., Kavanagh, Robert D., Pope, Benjamin J. S., Climent, Juan B., Guirado, José Carlos, Peña-Moñino, Luis, Pérez-Torres, Miguel
Stellar radio emission can measure a star's magnetic field strength and structure, plasma density and dynamics, and the stellar wind pressure impinging on exoplanet atmospheres. However, properly interpreting the radio data often requires temporal ba
Externí odkaz:
http://arxiv.org/abs/2312.09071
Autor:
Fitzmaurice, Evan, Stefánsson, Gudmundur, Kavanagh, Robert D., Mahadevan, Suvrath, Cañas, Caleb I., Winn, Joshua N., Robertson, Paul, Ninan, Joe P., Albrecht, Simon, Callingham, J. R., Cochran, William D., Delamer, Megan, Kanodia, Shubham, Lin, Andrea S. J., Marcussen, Marcus L., Pope, Benjamin J. S., Ramsey, Lawrence W., Roy, Arpita, Vedantham, Harish, Wright, Jason T.
We characterize the LHS 1610 system, a nearby ($d=9.7$ pc) M5 dwarf hosting a brown dwarf in a $10.6$ day, eccentric ($e \sim 0.37$) orbit. A joint fit of the available Gaia two-body solution, discovery radial velocities (RVs) from TRES, and new RVs
Externí odkaz:
http://arxiv.org/abs/2310.07827
Autor:
Calissendorff, Per, De Furio, Matthew, Meyer, Michael, Albert, Loïc, Aganze, Christian, Ali-Dib, Mohamad, Gagliuffi, Daniella C. Bardalez, Baron, Frederique, Beichman, Charles A., Burgasser, Adam J., Cushing, Michael C., Faherty, Jacqueline Kelly, Fontanive, Clémence, Gelino, Christopher R., Gizis, John E., Greenbaum, Alexandra Z., Kirkpatrick, J. Davy, Leggett, Sandy K., Martinache, Frantz, Mary, David, N'Diaye, Mamadou, Pope, Benjamin J. S., Roellig, Thomas L, Sahlmann, Johannes, Sivaramakrishnan, Anand, Thorngren, Daniel Peter, Ygouf, Marie, Vandal, Thomas
We report the discovery of the first brown dwarf binary system with a Y dwarf primary, WISE J033605.05$-$014350.4, observed with NIRCam on JWST with the F150W and F480M filters. We employed an empirical point spread function binary model to identify
Externí odkaz:
http://arxiv.org/abs/2303.16923
Autor:
Khalid, Maham1 (AUTHOR) mahamkhalid@arizona.edu, Pope, Elizabeth J.1 (AUTHOR)
Publikováno v:
Early Childhood Education Journal. Dec2024, Vol. 52 Issue 8, p2079-2093. 15p.
Autor:
Callingham, J. R., Shimwell, T. W., Vedantham, H. K., Bassa, C. G., O'Sullivan, S. P., Yiu, T. W. H., Bloot, S., Best, P. N., Hardcastle, M. J., Haverkorn, M., Kavanagh, R. D., Lamy, L., Pope, B. J. S., Röttgering, H. J. A., Schwarz, D. J., Tasse, C., van Weeren, R. J., White, G. J., Zarka, P., Bomans, D. J., Bonafede, A., Bonato, M., Botteon, A., Bruggen, M., Chyży, K. T., Drabent, A., Emig, K. L., Gloudemans, A. J., Gürkan, G., Hajduk, M., Hoang, D. N., Hoeft, M., Iacobelli, M., Kadler, M., Kunert-Bajraszewska, M., Mingo, B., Morabito, L. K., Nair, D. G., Pérez-Torres, M., Ray, T. P., Riseley, C. J., Rowlinson, A., Shulevski, A., Sweijen, F., Timmerman, R., Vaccari, M., Zheng, J.
Publikováno v:
A&A 670, A124 (2023)
We present the detection of 68 sources from the most sensitive radio survey in circular polarisation conducted to date. We use the second data release of the 144 MHz LOFAR Two-metre Sky Survey to produce circularly-polarised maps with median 140 $\mu
Externí odkaz:
http://arxiv.org/abs/2212.09815