Zobrazeno 1 - 10
of 1 396
pro vyhledávání: '"Keith Michael"'
Autor:
Grunthal, Kathrin, Nathan, Rowina S., Thrane, Eric, Champion, David J., Miles, Matthew T., Shannon, Ryan M., Kulkarni, Atharva D., Abbate, Federico, Buchner, Sarah, Cameron, Andrew D., Geyer, Marisa, Gitika, Pratyasha, Keith, Michael J., Kramer, Michael, Lasky, Paul D., Parthasarathy, Aditya, Reardon, Daniel J., Singha, Jaikhomba, Krishnan, Vivek Venkatraman
In an accompanying publication, the MeerKAT Pulsar Timing Array (MPTA) collaboration reports tentative evidence for the presence of a stochastic gravitational-wave background, following observations of similar signals from the European and Indian Pul
Externí odkaz:
http://arxiv.org/abs/2412.01214
Autor:
Miles, Matthew T., Shannon, Ryan M., Reardon, Daniel J., Bailes, Matthew, Champion, David J., Geyer, Marisa, Gitika, Pratyasha, Grunthal, Kathrin, Keith, Michael J., Kramer, Michael, Kulkarni, Atharva D., Nathan, Rowina S., Parthasarathy, Aditya, Singha, Jaikhomba, Theureau, Gilles, Thrane, Eric, Abbate, Federico, Buchner, Sarah, Cameron, Andrew D., Camilo, Fernando, Moreschi, Beatrice E., Shaifullah, Golam, Shamohammadi, Mohsen, Possenti, Andrea, Krishnan, Vivek Venkatraman
Pulsar Timing Arrays search for nanohertz-frequency gravitational waves by regularly observing ensembles of millisecond pulsars over many years to look for correlated timing residuals. Recently the first evidence for a stochastic gravitational wave b
Externí odkaz:
http://arxiv.org/abs/2412.01153
Autor:
Miles, Matthew T., Shannon, Ryan M., Reardon, Daniel J., Bailes, Matthew, Champion, David J., Geyer, Marisa, Gitika, Pratyasha, Grunthal, Kathrin, Keith, Michael J., Kramer, Michael, Kulkarni, Atharva D., Nathan, Rowina S., Parthasarathy, Aditya, Porayko, Nataliya K., Singha, Jaikhomba, Theureau, Gilles, Abbate, Federico, Buchner, Sarah, Cameron, Andrew D., Camilo, Fernando, Moreschi, Beatrice E., Shaifullah, Golam, Shamohammadi, Mohsen, Krishnan, Vivek Venkatraman
Pulsar timing arrays are ensembles of regularly observed millisecond pulsars timed to high precision. Each pulsar in an array could be affected by a suite of noise processes, most of which are astrophysically motivated. Analysing them carefully can b
Externí odkaz:
http://arxiv.org/abs/2412.01148
Autor:
Rosenthal, Alexandra C., Ransom, Scott M., Corcoran, Kyle A., DeCesar, Megan E., Freire, Paolo C. C., Hessels, Jason W. T., Keith, Michael J., Lynch, Ryan S., Lyne, Andrew, Nice, David J., Stairs, Ingrid H., Stappers, Ben, Strader, Jay, Thorsett, Stephen E., Urquhart, Ryan
We present a 34-year timing solution of the redback pulsar system Terzan 5A (Ter5A). Ter5A, also known as B1744$-$24A or J1748$-$2446A, has a 11.56 ms pulse period, a $\sim$0.1 solar mass dwarf companion star, and an orbital period of 1.82 hours. Ter
Externí odkaz:
http://arxiv.org/abs/2410.21648
Autor:
Nitu, Iuliana, Keith, Michael, Champion, David, Cognard, Ismael, Desvignes, Gregory, Guillemot, Lucas, Guo, Yanjun, Hu, Huanchen, Jang, Jiwoong, Jawor, Jedrzej, Karuppusamy, Ramesh, Keane, Evan, Kramer, Michael, Lackeos, Kristen, Liu, Kuo, Main, Robert, Perrodin, Delphine, Porayko, Nataliya, Shaifullah, Golam, Theureau, Gilles
In this work, we investigated the presence of strictly periodic, as well as quasi-periodic signals, in the timing of the 25 millisecond pulsars from the EPTA DR2 dataset. This is especially interesting in the context of the recent hints of a gravitat
Externí odkaz:
http://arxiv.org/abs/2408.09795
Autor:
Liu, Yang, Keith, Michael J., Antonopoulou, Danai, Weltevrede, Patrick, Shaw, Benjamin, Stappers, Benjamin W., Lyne, Andrew G., Mickaliger, Mitchell B., Basu, Avishek
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 532, Issue 1, pp.859-882 July 2024
For a selection of 35 pulsars with large spin-up glitches ($\Delta{\nu}/\nu\geq10^{-6}$), which are monitored by the Jodrell Bank Observatory, we analyse 157 glitches and their recoveries. All parameters are measured consistently and we choose the be
Externí odkaz:
http://arxiv.org/abs/2406.09219
Autor:
Larsen, Bjorn, Mingarelli, Chiara M. F., Hazboun, Jeffrey S., Chalumeau, Aurelien, Good, Deborah C., Simon, Joseph, Agazie, Gabriella, Anumarlapudi, Akash, Archibald, Anne M., Arzoumanian, Zaven, Baker, Paul T., Brook, Paul R., Cromartie, H. Thankful, Crowter, Kathryn, DeCesar, Megan E., Demorest, Paul B., Dolch, Timothy, Ferrara, Elizabeth C., Fiore, William, Fonseca, Emmanuel, Freedman, Gabriel E., Garver-Daniels, Nate, Gentile, Peter A., Glaser, Joseph, Jennings, Ross J., Jones, Megan L., Kaplan, David L., Kerr, Matthew, Lam, Michael T., Lorimer, Duncan R., Luo, Jing, Lynch, Ryan S., McEwen, Alexander, McLaughlin, Maura A., McMann, Natasha, Meyers, Bradley W., Ng, Cherry, Nice, David J., Pennucci, Timothy T., Perera, Benetge B. P., Pol, Nihan S., Radovan, Henri A., Ransom, Scott M., Ray, Paul S., Schmiedekamp, Ann, Schmiedekamp, Carl, Shapiro-Albert, Brent J., Stairs, Ingrid H., Stovall, Kevin, Susobhanan, Abhimanyu, Swiggum, Joseph K., Wahl, Haley M., Champion, David J., Cognard, Ismael, Guillemot, Lucas, Hu, Huanchen, Keith, Michael J., Liu, Kuo, McKee, James W., Parthasarathy, Aditya, Perrodin, Delphine, Possenti, Andrea, Shaifullah, Golam M., Theureau, Gilles
Pulsar timing arrays (PTAs) are designed to detect low-frequency gravitational waves (GWs). GWs induce achromatic signals in PTA data, meaning that the timing delays do not depend on radio-frequency. However, pulse arrival times are also affected by
Externí odkaz:
http://arxiv.org/abs/2405.14941
The S-shaped swing of the linear polarization position angle (PPA) observed in many pulsars can be interpreted by the rotating vector model (RVM). However, efforts to fit the RVM for a large sample of pulsars observed with the MeerKAT telescope as a
Externí odkaz:
http://arxiv.org/abs/2404.10254