Zobrazeno 1 - 10
of 12 915
pro vyhledávání: '"Graham, M A"'
Autor:
MacLeod, Morgan, Blunt, Sarah, De Rosa, Robert J., Dupree, Andrea K., Granzer, Thomas, Harper, Graham M., Huang, Caroline D., Leiner, Emily M., Loeb, Abraham, Nielsen, Eric L., Strassmeier, Klaus G., Wang, Jason J., Weber, Michael
We examine a century of radial velocity, visual magnitude, and astrometric observations of the nearest red supergiant, Betelgeuse, in order to reexamine the century-old assertion that Betelgeuse might be a spectroscopic binary. These data reveal Bete
Externí odkaz:
http://arxiv.org/abs/2409.11332
Autor:
Pessi, P. J., Lunnan, R., Sollerman, J., Schulze, S., Gkini, A., Gangopadhyay, A., Yan, L., Gal-Yam, A., Perley, D. A., Chen, T. -W., Hinds, K. R., Brennan, S. J., Hu, Y., Singh, A., Andreoni, I., Cook, D. O., Fremling, C., Ho, A. Y. Q., Sharma, Y., van Velzen, S., Wold, A., Bellm, E. C., Bloom, J. S., Graham, M. J., Kasliwal, M. M., Kulkarni, S. R., Riddle, R., Rusholme, B.
Hydrogen-rich superluminous supernovae (SLSNe II) are rare. The exact mechanism producing their extreme light curve peaks is not understood. Analysis of single events and small samples suggest that CSM interaction is the main responsible for their fe
Externí odkaz:
http://arxiv.org/abs/2408.15086
Autor:
de la Parra, P. V., Kiehlmann, S., Mroz, P., Readhead, A. C. S., Synani, A., Begelman, M. C., Blandford, R. D., Ding, Y., Harrison, F., Liodakis, I., Max-Moerbeck, W., Pavlidou, V., Reeves, R., Vallisneri, M., Aller, M. F., Graham, M. J., Hovatta, T., Lawrence, C. R., Lazio, T. J. W., Mahabal, A. A., Molina, B., O'Neill, S., Pearson, T. J., Ravi, V., Tassis, K., Zensus, J. A.
Owens Valley Radio Observatory (OVRO) observations of supermassive black hole binary (SMBHB) candidate PKS~2131$-$021 revealed, for the first time, six likely characteristics of the phenomenology exhibited by SMBHB in blazars, of which the most unexp
Externí odkaz:
http://arxiv.org/abs/2408.02645
Autor:
Doskoch, Graham M., Basuroski, Andrea, Halley, Kriisa, Sookram, Avinash, Rodriguez-Ramos, Iliomar, Nahata, Valmik, Rahman, Zahi, Zhang, Maureen, Uhlmann, Ashish, Lynch, Abby, Lewandowska, Natalia, Miranda, Nohely, Schmiedekamp, Ann, Schmiedekamp, Carl, McLaughlin, Maura A., Reichart, Daniel E., Haislip, Joshua B., Kouprianov, Vladimir V., White, Steve, Ghigo, Frank, Heatherly, Sue Ann
A small number of pulsars are known to emit giant pulses, single pulses much brighter than average. Among these is PSR J0534+2200, also known as the Crab pulsar, a young pulsar with high giant pulse rates. Long-term monitoring of the Crab pulsar pres
Externí odkaz:
http://arxiv.org/abs/2407.15996
Autor:
Burgaz, U., Maguire, K., Dimitriadis, G., Harvey, L., Senzel, R., Sollerman, J., Nordin, J., Galbany, L., Rigault, M., Smith, M., Goobar, A., Johansson, J., Rosnet, P., Amenouche, M., Deckers, M., Dhawan, S., Ginolin, M., Kim, Y. -L., Miller, A. A., Muller-Bravo, T. E., Nugent, P. E., Terwel, J. H., Dekany, R., Drake, A., Graham, M. J., Groom, S. L., Kasliwal, M. M., Kulkarni, S. R., Nolan, K., Nir, G., Riddle, R. L., Rusholme, B., Sharma, Y.
More than 3000 spectroscopically confirmed Type Ia supernovae (SNe Ia) are presented in the Zwicky Transient Facility SN Ia Data Release 2 (ZTF DR2). In this paper, we detail the spectral properties of 482 SNe Ia near maximum light, up to a redshift
Externí odkaz:
http://arxiv.org/abs/2407.06828
Autor:
Sánchez-Sáez, P., Hernández-García, L., Bernal, S., Bayo, A., Rivera, G. Calistro, Bauer, F. E., Ricci, C., Merloni, A., Graham, M. J., Cartier, R., Arévalo, P., Assef, R. J., Concas, A., Homan, D., Krumpe, M., Lira, P., Malyali, A., Martínez-Aldama, M. L., Arancibia, A. M. Muñoz, Rau, A., Bruni, G., Förster, F., Pavez-Herrera, M., Tubín-Arenas, D., Brightman, M.
The galaxy SDSS1335+0728, which had exhibited no prior optical variations during the preceding two decades, began showing significant nuclear variability in the Zwicky Transient Facility (ZTF) alert stream from December 2019 (as ZTF19acnskyy). Its be
Externí odkaz:
http://arxiv.org/abs/2406.11983
Autor:
Wiseman, P., Williams, R. D., Arcavi, I., Galbany, L., Graham, M. J., Hönig, S., Newsome, M., Subrayan, B., Sullivan, M., Wang, Y., Ilić, D., Nicholl, M., Oates, S., Petrushevska, T., Smith, K. W.
We present a search for luminous, long-duration ambiguous nuclear transients (ANTs) similar to the unprecedented discovery of the extreme, ambiguous event AT2021lwx with a $>150$ d rise time and luminosity $10^{45.7}$ erg s$^{-1}$. We use the Lasair
Externí odkaz:
http://arxiv.org/abs/2406.11552
Autor:
Ginolin, M., Rigault, M., Copin, Y., Popovic, B., Dimitriadis, G., Goobar, A., Johansson, J., Maguire, K., Nordin, J., Smith, M., Aubert, M., Barjou-Delayre, C., Burgaz, U., Carreres, B., Dhawan, S., Deckers, M., Feinstein, F., Fouchez, D., Galbany, L., Ganot, C., de Jaeger, T., Kim, Y. -L., Kuhn, D., Lacroix, L., Müller-Bravo, T. E., Nugent, P., Racine, B., Rosnet, P., Rosselli, D., Ruppin, F., Sollerman, J., Terwel, J. H., Townsend, A., Dekany, R., Graham, M., Kasliwal, M., Groom, S. L., Purdum, J., Rusholme, B., van der Walt, S.
As Type Ia supernova cosmology transitions from a statistics dominated to a systematics dominated era, it is crucial to understand leftover unexplained uncertainties affecting their luminosity, such as the ones stemming from astrophysical biases. Ind
Externí odkaz:
http://arxiv.org/abs/2406.02072
We describe recent spectroscopic observations of red giant stars made by the Space Telescope Imaging Spectrograph (STIS) instrument on board the Hubble Space Telescope, which have provided spatially resolved observations of the warm chromospheric win
Externí odkaz:
http://arxiv.org/abs/2404.15086
Autor:
Goyal, Manu, Marotti, Jonathan D., Workman, Adrienne A., Kuhn, Elaine P., Tooker, Graham M., Ramin, Seth K., Chamberlin, Mary D., diFlorio-Alexander, Roberta M., Hassanpour, Saeed
Breast cancer is the most common malignancy affecting women worldwide and is notable for its morphologic and biologic diversity, with varying risks of recurrence following treatment. The Oncotype DX Breast Recurrence Score test is an important predic
Externí odkaz:
http://arxiv.org/abs/2401.15805