Zobrazeno 1 - 10
of 336
pro vyhledávání: '"Leahy, Denis A."'
Autor:
Nguyen, Hiep, McClure-Griffiths, N. M., Dempsey, James, Dickey, John M., Lee, Min-Young, Lynn, Callum, Murray, Claire E., Stanimirović, Snežana, Busch, Michael P., Clark, Susan E., Dawson, J. R., Dénes, Helga, Gibson, Steven, Jameson, Katherine, Joncas, Gilles, Kemp, Ian, Leahy, Denis, Ma, Yik Ki, Marchal, Antoine, Miville-Deschênes, Marc-Antoine, Pingel, Nickolas M., Seta, Amit, Soler, Juan D., van Loon, Jacco Th.
Publikováno v:
MNRAS 2024
We present the largest Galactic neutral hydrogen HI absorption survey to date, utilizing the Australian SKA Pathfinder Telescope at an unprecedented spatial resolution of 30''. This survey, GASKAP-HI, unbiasedly targets 2,714 continuum background sou
Externí odkaz:
http://arxiv.org/abs/2409.20311
We utilize the Quark-Nova (QN) model for Fast Radio Bursts (FRBs; Ouyed et al. 2021) to evaluate its performance in reproducing the distribution and statistical properties of key observations. These include frequency, duration, fluence, dispersion me
Externí odkaz:
http://arxiv.org/abs/2408.01834
Autor:
Mould, Jeremy, Jarrett, T. H., Courtois, Hélène, Bosma, Albert, Deg, Nathan, Dupuy, Alexandra, Staveley-Smith, Lister, Taylor, E. N., English, Jayanne, Rajohnson, S. H. A., Kraan-Korteweg, Renée, Forbes, Duncan, Dénes, Helga, Lee-Waddell, Karen, Shen, Austin, Wong, O. I., Holwerda, Benne, Koribalski, Bärbel, Leahy, Denis, Piña, Pavel Mancera, Yu, Niankun
The Tully-Fisher Relation (TFR) is a well-known empirical relationship between the luminosity of a spiral galaxy and its circular velocity, allowing us to estimate redshift independent distances. Here we use high signal-to-noise HI 21-cm integrated s
Externí odkaz:
http://arxiv.org/abs/2406.10877
Autor:
Lazarević, Sanja, Filipović, Miroslav D., Koribalski, Bärbel S., Smeaton, Zachary J., Hopkins, Andrew M., Alsaberi, Rami Z. E., Velović, Velibor, Ball, Brianna D., Kothes, Roland, Leahy, Denis, Ingallinera, Adriano
Publikováno v:
Research Notes of the American Astronomical Society, 8, 107 (2024)
We report the ASKAP discovery of a new Galactic supernova remnant (SNR) candidate G308.73+1.38, which we name Raspberry. This new SNR candidate has an angular size of 20.7 arcmin $\times$ 16.7 arcmin, and we measure a total integrated flux of 407$\pm
Externí odkaz:
http://arxiv.org/abs/2405.03733
Autor:
Prathap, Jahang, Hopkins, Andrew M., Robotham, Aaron S. G., Bellstedt, Sabine, Afonso, José, Ahmed, Ummee T., Bilicki, Maciej, Bremer, Malcolm N., Brough, Sarah, Brown, Michael J. I., Gordon, Yjan, Holwerda, Benne W., Leahy, Denis, López-Sánchez, Ángel R., Marvil, Joshua R., Mukherjee, Tamal, Prandoni, Isabella, Shabala, Stanislav S., Vernstrom, Tessa, Zafar, Tayyaba
We propose a new method for identifying active galactic nuclei (AGN) in low mass ($\rm M_*\leq10^{10}M_\odot$) galaxies. This method relies on spectral energy distribution (SED) fitting to identify galaxies whose radio flux density has an excess over
Externí odkaz:
http://arxiv.org/abs/2402.11817
Autor:
Murray, Claire E., Hasselquist, Sten, Peek, Joshua E. G., Lindberg, Christina Willecke, Almeida, Andres, Choi, Yumi, Craig, Jessica E. M., Denes, Helga, Dickey, John M., Di Teodoro, Enrico M., Federrath, Christoph, Gerrard, Isabella A., Gibson, Steven J., Leahy, Denis, Lee, Min-Young, Lynn, Callum, Ma, Yik Ki, Marchal, Antoine, McClure-Griffiths, N. M., Nidever, David, Nguyen, Hiep, Pingel, Nickolas M., Tarantino, Elizabeth, Uscanga, Lucero, van Loon, Jacco Th.
The structure and dynamics of the star-forming disk of the Small Magellanic Cloud (SMC) have long confounded us. The SMC is widely used as a prototype for galactic physics at low metallicity, and yet we fundamentally lack an understanding of the stru
Externí odkaz:
http://arxiv.org/abs/2312.07750
Autor:
Lazarević, Sanja, Filipović, Miroslav D., Dai, Shi, Kothes, Roland, Ahmad, Adeel, Alsaberi, Rami Z. E., Balzan, Joel C. F., Barnes, Luke A., Cotton, William D., Edwards, Philip G., Gordon, Yjan A., Haberl, Frank, Hopkins, Andrew M., Koribalski, Bärbel S., Leahy, Denis, Maitra, Chandreyee, Mićić, Marko, Rowell, Gavin, Sasaki, Manami, Tothill, Nicholas F. H., Umana, Grazia, Velović, Velibor
We report the discovery of a bow-shock pulsar wind nebula (PWN), named Potoroo, and the detection of a young pulsar J1638-4713 that powers the nebula. We present a radio continuum study of the PWN based on 20-cm observations obtained from the Austral
Externí odkaz:
http://arxiv.org/abs/2312.06961
The purpose of this work is to describe the assumptions built into the X-ray spectrum fitting software XSPEC for the calculation of element abundances and emission measure of a plasma and to describe the effects when those assumptions are not accurat
Externí odkaz:
http://arxiv.org/abs/2311.11181
Autor:
Filipović, Miroslav D., Dai, Shi, Arbutina, Bojan, Hurley-Walker, Natasha, Brose, Robert, Becker, Werner, Sano, Hidetoshi, Urošević, Dejan, Jarrett, T. H., Hopkins, Andrew M., Alsaberi, Rami Z. E., Alsulami, R., Bordiu, Cristobal, Ball, Brianna, Bufano, Filomena, Burger-Scheidlin, Christopher, Crawford, Evan, English, Jayanne, Haberl, Frank, Ingallinera, Adriano, Kapinska, Anna D., Kavanagh, Patrick J., Koribalski, Bärbel S., Kothes, Roland, Lazarević, Sanja, Mackey, Jonathan, Rowell, Gavin, Leahy, Denis, Loru, Sara, Macgregor, Peter J., Nicastro, Luciano, Norris, Ray P., Riggi, Simone, Sasaki, Manami, Stupar, Milorad, Trigilio, Corrado, Umana, Grazia, Vernstrom, Tessa, Vukotić, Branislav
We present the serendipitous detection of a new Galactic Supernova Remnant (SNR), G288.8-6.3 using data from the Australian Square Kilometre Array Pathfinder (ASKAP)-Evolutionary Map of the Universe (EMU) survey. Using multi-frequency analysis, we co
Externí odkaz:
http://arxiv.org/abs/2308.08716
Autor:
Ball, Brianna D., Kothes, Roland, Rosolowsky, Erik, West, Jennifer, Becker, Werner, Filipović, Miroslav D., Gaensler, B. M., Hopkins, Andrew M., Koribalski, Bärbel, Landecker, Tom, Leahy, Denis, Marvil, Joshua, Sun, Xiaohui, Bufano, Filomena, Carretti, Ettore, Ingallinera, Adriano, Van Eck, Cameron L., Willis, Tony
We use data from the pilot observations of the EMU/POSSUM surveys to study the "missing supernova remnant (SNR) problem", the discrepancy between the number of Galactic SNRs that have been observed and the number that are estimated to exist. The Evol
Externí odkaz:
http://arxiv.org/abs/2307.01948