Zobrazeno 1 - 10
of 724
pro vyhledávání: '"M. Ransom"'
Autor:
Yuxiao Wu, Zhichen Pan, Lei Qian, Scott M. Ransom, Ralph P. Eatough, BoJun Wang, Paulo C. C. Freire, Kuo Liu, Zhen Yan, Jintao Luo, Liyun Zhang, Minghui Li, Dejiang Yin, Baoda Li, Yifeng Li, Yinfeng Dai, Yaowei Li, Xinnan Zhang, Tong Liu, Yu Pan
Publikováno v:
The Astrophysical Journal Letters, Vol 974, Iss 2, p L23 (2024)
We present the discovery of three pulsars in the globular cluster (GC) M15 (NGC 7078) by the Five-hundred-meter Aperture Spherical Radio Telescope. PSR J2129+1210J (M15J) is a millisecond pulsar with a spin period of 11.84 ms and a dispersion measure
Externí odkaz:
https://doaj.org/article/72230bd637174a5499cad0c36b04cec0
Autor:
Adeela Afzal, Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald, Zaven Arzoumanian, Paul T. Baker, Bence Bécsy, Jose Juan Blanco-Pillado, Laura Blecha, Kimberly K. Boddy, Adam Brazier, Paul R. Brook, Sarah Burke-Spolaor, Rand Burnette, Robin Case, Maria Charisi, Shami Chatterjee, Katerina Chatziioannou, Belinda D. Cheeseboro, Siyuan Chen, Tyler Cohen, James M. Cordes, Neil J. Cornish, Fronefield Crawford, H. Thankful Cromartie, Kathryn Crowter, Curt J. Cutler, Megan E. DeCesar, Dallas DeGan, Paul B. Demorest, Heling Deng, Timothy Dolch, Brendan Drachler, Richard von Eckardstein, Elizabeth C. Ferrara, William Fiore, Emmanuel Fonseca, Gabriel E. Freedman, Nate Garver-Daniels, Peter A. Gentile, Kyle A. Gersbach, Joseph Glaser, Deborah C. Good, Lydia Guertin, Kayhan Gültekin, Jeffrey S. Hazboun, Sophie Hourihane, Kristina Islo, Ross J. Jennings, Aaron D. Johnson, Megan L. Jones, Andrew R. Kaiser, David L. Kaplan, Luke Zoltan Kelley, Matthew Kerr, Joey S. Key, Nima Laal, Michael T. Lam, William G. Lamb, T. Joseph W. Lazio, Vincent S. H. Lee, Natalia Lewandowska, Rafael R. Lino dos Santos, Tyson B. Littenberg, Tingting Liu, Duncan R. Lorimer, Jing Luo, Ryan S. Lynch, Chung-Pei Ma, Dustin R. Madison, Alexander McEwen, James W. McKee, Maura A. McLaughlin, Natasha McMann, Bradley W. Meyers, Patrick M. Meyers, Chiara M. F. Mingarelli, Andrea Mitridate, Jonathan Nay, Priyamvada Natarajan, Cherry Ng, David J. Nice, Stella Koch Ocker, Ken D. Olum, Timothy T. Pennucci, Benetge B. P. Perera, Polina Petrov, Nihan S. Pol, Henri A. Radovan, Scott M. Ransom, Paul S. Ray, Joseph D. Romano, Shashwat C. Sardesai, Ann Schmiedekamp, Carl Schmiedekamp, Kai Schmitz, Tobias Schröder, Levi Schult, Brent J. Shapiro-Albert, Xavier Siemens, Joseph Simon, Magdalena S. Siwek, Ingrid H. Stairs, Daniel R. Stinebring, Kevin Stovall, Peter Stratmann, Jerry P. Sun, Abhimanyu Susobhanan, Joseph K. Swiggum, Jacob Taylor, Stephen R. Taylor, Tanner Trickle, Jacob E. Turner, Caner Unal, Michele Vallisneri, Sonali Verma, Sarah J. Vigeland, Haley M. Wahl, Qiaohong Wang, Caitlin A. Witt, David Wright, Olivia Young, Kathryn M. Zurek, The NANOGrav Collaboration
Publikováno v:
The Astrophysical Journal Letters, Vol 971, Iss 1, p L27 (2024)
Externí odkaz:
https://doaj.org/article/2a220bbebfb14f09b1dffb91f2eaa820
Autor:
Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald, Zaven Arzoumanian, Jeremy Baier, Paul T. Baker, Bence Bécsy, Laura Blecha, Adam Brazier, Paul R. Brook, Sarah Burke-Spolaor, Rand Burnette, Robin Case, J. Andrew Casey-Clyde, Maria Charisi, Shami Chatterjee, Tyler Cohen, James M. Cordes, Neil J. Cornish, Fronefield Crawford, H. Thankful Cromartie, Kathryn Crowter, Megan E. DeCesar, Dallas DeGan, Paul B. Demorest, Timothy Dolch, Brendan Drachler, Elizabeth C. Ferrara, William Fiore, Emmanuel Fonseca, Gabriel E. Freedman, Nate Garver-Daniels, Peter A. Gentile, Joseph Glaser, Deborah C. Good, Kayhan Gültekin, Jeffrey S. Hazboun, Ross J. Jennings, Aaron D. Johnson, Megan L. Jones, Andrew R. Kaiser, David L. Kaplan, Luke Zoltan Kelley, Matthew Kerr, Joey S. Key, Nima Laal, Michael T. Lam, William G. Lamb, T. Joseph W. Lazio, Natalia Lewandowska, Tingting Liu, Duncan R. Lorimer, Jing Luo, Ryan S. Lynch, Chung-Pei Ma, Dustin R. Madison, Alexander McEwen, James W. McKee, Maura A. McLaughlin, Natasha McMann, Bradley W. Meyers, Chiara M. F. Mingarelli, Andrea Mitridate, Priyamvada Natarajan, Cherry Ng, David J. Nice, Stella Koch Ocker, Ken D. Olum, Timothy T. Pennucci, Benetge B. P. Perera, Nihan S. Pol, Henri A. Radovan, Scott M. Ransom, Paul S. Ray, Joseph D. Romano, Alexander Saffer, Shashwat C. Sardesai, Ann Schmiedekamp, Carl Schmiedekamp, Kai Schmitz, Brent J. Shapiro-Albert, Xavier Siemens, Joseph Simon, Magdalena S. Siwek, Ingrid H. Stairs, Daniel R. Stinebring, Kevin Stovall, Jerry P. Sun, Abhimanyu Susobhanan, Joseph K. Swiggum, Jacob A. Taylor, Stephen R. Taylor, Jacob E. Turner, Caner Unal, Michele Vallisneri, Sarah J. Vigeland, Haley M. Wahl, Caitlin A. Witt, Olivia Young, The NANOGrav Collaboration
Publikováno v:
The Astrophysical Journal Letters, Vol 964, Iss 1, p L14 (2024)
Recently we found compelling evidence for a gravitational-wave background with Hellings and Downs (HD) correlations in our 15 yr data set. These correlations describe gravitational waves as predicted by general relativity, which has two transverse po
Externí odkaz:
https://doaj.org/article/f30fe481b6ca43d4aca1e7071bb51fb0
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 1, p 77 (2024)
The existence of compact stellar remnants in the mass range 2–5 M _⊙ has long been debated. This so-called lower-mass gap (LMG) was initially suggested by the lack of low-mass X-ray binary observations with accretors about 2–5 M _⊙ , but it h
Externí odkaz:
https://doaj.org/article/31f710506b334b05a2f4f49c9e2be366
Autor:
Bjorn Larsen, Chiara M. F. Mingarelli, Jeffrey S. Hazboun, Aurélien Chalumeau, Deborah C. Good, Joseph Simon, Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald, Zaven Arzoumanian, Paul T. Baker, Paul R. Brook, H. Thankful Cromartie, Kathryn Crowter, Megan E. DeCesar, Paul B. Demorest, Timothy Dolch, Elizabeth C. Ferrara, William Fiore, Emmanuel Fonseca, Gabriel E. Freedman, Nate Garver-Daniels, Peter A. Gentile, Joseph Glaser, Ross J. Jennings, Megan L. Jones, David L. Kaplan, Matthew Kerr, Michael T. Lam, Duncan R. Lorimer, Jing Luo, Ryan S. Lynch, Alexander McEwen, Maura A. McLaughlin, Natasha McMann, Bradley W. Meyers, Cherry Ng, David J. Nice, Timothy T. Pennucci, Benetge B. P. Perera, Nihan S. Pol, Henri A. Radovan, Scott M. Ransom, Paul S. Ray, Ann Schmiedekamp, Carl Schmiedekamp, Brent J. Shapiro-Albert, Ingrid H. Stairs, Kevin Stovall, Abhimanyu Susobhanan, Joseph K. Swiggum, Haley M. Wahl, David J. Champion, Ismaël Cognard, Lucas Guillemot, Huanchen Hu, Michael J. Keith, Kuo Liu, James W. McKee, Aditya Parthasarathy, Delphine Perrodin, Andrea Possenti, Golam M. Shaifullah, Gilles Theureau
Publikováno v:
The Astrophysical Journal, Vol 972, Iss 1, p 49 (2024)
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:
https://doaj.org/article/8842134071884eabbb38d4353be68be5
Autor:
Abhimanyu Susobhanan, David L. Kaplan, Anne M. Archibald, Jing Luo, Paul S. Ray, Timothy T. Pennucci, Scott M. Ransom, Gabriella Agazie, William Fiore, Bjorn Larsen, Patrick O’Neill, Rutger van Haasteren, Akash Anumarlapudi, Matteo Bachetti, Deven Bhakta, Chloe A. Champagne, H. Thankful Cromartie, Paul B. Demorest, Ross J. Jennings, Matthew Kerr, Sasha Levina, Alexander McEwen, Brent J. Shapiro-Albert, Joseph K. Swiggum
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 2, p 150 (2024)
PINT is a pure-Python framework for high-precision pulsar timing developed on top of widely used and well-tested Python libraries, supporting both interactive and programmatic data analysis workflows. We present a new frequentist framework within PIN
Externí odkaz:
https://doaj.org/article/64a28b5e63dc4ec2b66862284b4e5cc0
Autor:
The CHIME/FRB Collaboration, Mandana Amiri, Bridget C. Andersen, Shion Andrew, Kevin Bandura, Mohit Bhardwaj, P. J. Boyle, Charanjot Brar, Daniela Breitman, Tomas Cassanelli, Pragya Chawla, Amanda M. Cook, Alice P. Curtin, Matt Dobbs, Fengqiu Adam Dong, Gwendolyn Eadie, Emmanuel Fonseca, B. M. Gaensler, Utkarsh Giri, Antonio Herrera-Martin, Hans Hopkins, Adaeze L. Ibik, Ronniy C. Joseph, J. F. Kaczmarek, Zarif Kader, Victoria M. Kaspi, Adam E. Lanman, Mattias Lazda, Calvin Leung, Siqi Liu, Kiyoshi W. Masui, Ryan Mckinven, Juan Mena-Parra, Marcus Merryfield, Daniele Michilli, Cherry Ng, Kenzie Nimmo, Gavin Noble, Ayush Pandhi, Chitrang Patel, Aaron B. Pearlman, Ue-Li Pen, Emily Petroff, Ziggy Pleunis, Masoud Rafiei-Ravandi, Mubdi Rahman, Scott M. Ransom, Ketan R. Sand, Paul Scholz, Vishwangi Shah, Kaitlyn Shin, Yuliya Shpunarska, Seth R. Siegel, Kendrick Smith, Ingrid Stairs, David C. Stenning, Keith Vanderlinde, Haochen Wang, Henry White, Dallas Wulf
Publikováno v:
The Astrophysical Journal, Vol 969, Iss 2, p 145 (2024)
In 2021, a catalog of 536 fast radio bursts (FRBs) detected with the Canadian Hydrogen Intensity Mapping Experiment (CHIME) radio telescope was released by the CHIME/FRB Collaboration. This large collection of bursts, observed with a single instrumen
Externí odkaz:
https://doaj.org/article/66da8275a640459286441a123fa8abcc
Autor:
A. E. McEwen, R. S. Lynch, D. L. Kaplan, C. Bolda, R. Sengar, E. Fonseca, T. Agoudemos, J. Boyles, S. Chatterjee, T. Cohen, F. Crawford, M. E. DeCesar, A. Ehlke, T. Fernandez, E. C. Ferrara, W. Fiore, N. Gilhaus, M. Gleiter, J. W. T. Hessels, T. Holman, A. Joy, V. Kaspi, V. Kondratiev, H. D. Leon, L. Levin, B. Lorenz, D. R. Lorimer, D. R. Madison, M. A. McLaughlin, B. W. Meyers, E. Parent, L. Patron, S. M. Ransom, P. S. Ray, M. S. Roberts, S. Roch, X. Siemens, G. Stearns, J. K. Swiggum, I. H. Stairs, K. Stovall, C. M. Tan, N. Valentine, J. van Leeuwen
Publikováno v:
The Astrophysical Journal, Vol 969, Iss 2, p 118 (2024)
The Green Bank 820 MHz pulsar survey covers ≃173 deg ^2 in the Cygnus X region of the Galaxy, centered on l = 84.°5 and b = 1.°5. Significant star formation is present in this region, and lines of sight pass through three arms of the Galaxy (Orio
Externí odkaz:
https://doaj.org/article/61c8d1e9353a4b45900b80064c400188
Autor:
Amaris V. McCarver, Thomas J. Maccarone, Scott M. Ransom, Tracy E. Clarke, Simona Giacintucci, Wendy M. Peters, Emil Polisensky, Kristina Nyland, Tasha Gautam, Paulo C. C. Freire, Blagoy Rangelov
Publikováno v:
The Astrophysical Journal, Vol 969, Iss 1, p 30 (2024)
We present results from a search for pulsars in globular clusters, including the discovery of a new millisecond pulsar in the stellar cluster GLIMPSE-C01. We searched for low-frequency radio sources within 97 globular clusters using images from the V
Externí odkaz:
https://doaj.org/article/baeebdaa4a694a6f994b8e13c0d1abaa
Autor:
P. Bangale, B. Bhattacharyya, F. Camilo, C. J. Clark, I. Cognard, M. E. DeCesar, E. C. Ferrara, P. Gentile, L. Guillemot, J. W. T. Hessels, T. J. Johnson, M. Kerr, M. A. McLaughlin, L. Nieder, S. M. Ransom, P. S. Ray, M. S. E. Roberts, J. Roy, S. Sanpa-arsa, G. Theureau, M. T. Wolff
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 2, p 161 (2024)
We have searched for radio pulsations toward 49 Fermi Large Area Telescope (LAT) 1FGL Catalog γ -ray sources using the Green Bank Telescope at 350 MHz. We detected 18 millisecond pulsars (MSPs) in blind searches of the data; 10 of these were discove
Externí odkaz:
https://doaj.org/article/a8d6eccdcfd945ed9460e20c1ffa97f8