The NANOGrav 12.5-Year Data Set: Probing Interstellar Turbulence and Precision Pulsar Timing with PSR J1903+0327

Autor: Geiger, Abra, Cordes, James M., Lam, Michael T., Ocker, Stella Koch, Chatterjee, Shami, Arzoumanian, Zaven, Battaglia, Ava L., Blumer, Harsha, Brook, Paul R., Combs, Olivia A., Cromartie, H. Thankful, DeCesar, Megan E., Demorest, Paul B., Dolch, Timothy, Ellis, Justin A., Ferdman, Robert D., Ferrara, Elizabeth C., Fonseca, Emmanuel, Garver-Daniels, Nate, Gentile, Peter A., Good, Deborah C., Jones, Megan L., Lorimer, Duncan R., Luo, Jing, Lynch, Ryan S., McLaughlin, Maura A., Ng, Cherry, Nice, David J., Pennucci, Timothy T., Pol, Nihan S., Ransom, Scott M., Spiewak, Renée, Stairs, Ingrid H., Stovall, Kevin, Swiggum, Joseph K., Vigeland, Sarah J.

Free electrons in the interstellar medium refract and diffract radio waves along multiple paths, resulting in angular and temporal broadening of radio pulses that limits pulsar timing precision. We determine multifrequency, multi-epoch scattering tim

Externí odkaz: http://arxiv.org/abs/2411.08191

Exploring pulsar timing precision: A comparative study of polarization calibration methods for NANOGrav data from the Green Bank Telescope

Autor: Dey, Lankeswar, McLaughlin, Maura A., Wahl, Haley M., Demorest, Paul B., Arzoumanian, Zaven, Blumer, Harsha, Brook, Paul R., Burke-Spolaor, Sarah, Cromartie, H. Thankful, DeCesar, Megan E., Dolch, Timothy, Ellis, Justin A., Ferdman, Robert D., Ferrara, Elizabeth C., Fiore, William, Fonseca, Emmanuel, Garver-Daniels, Nate, Gentile, Peter A., Glaser, Joseph, Good, Deborah C., Jennings, Ross J., Jones, Megan L., Lam, Michael T., Lorimer, Duncan R., Luo, Jing, Lynch, Ryan S., Ng, Cherry, Nice, David J., Pennucci, Timothy T., Pol, Nihan S., Ransom, Scott M., Spiewak, Renée, Stairs, Ingrid H., Stovall, Kevin, Swiggum, Joseph K.

Pulsar timing array experiments have recently uncovered evidence for a nanohertz gravitational wave background by precisely timing an ensemble of millisecond pulsars. The next significant milestones for these experiments include characterizing the de

Externí odkaz: http://arxiv.org/abs/2406.13463

The NANOGrav 12.5-year Data Set: Search for Gravitational Wave Memory

Autor: Agazie, Gabriella, Arzoumanian, Zaven, Baker, Paul T., Bécsy, Bence, Blecha, Laura, Blumer, Harsha, Brazier, Adam, Brook, Paul R., Burke-Spolaor, Sarah, Burnette, Rand, Case, Robin, Casey-Clyde, J. Andrew, Charisi, Maria, Chatterjee, Shami, Cohen, Tyler, Cordes, James M., Cornish, Neil J., Crawford, Fronefield, Cromartie, H. Thankful, DeCesar, Megan E., DeGan, Dallas, Demorest, Paul B., Dolch, Timothy, Drachler, Brendan, Ellis, Justin A., Ferdman, Robert D., Ferrara, Elizabeth C., Fiore, William, Fonseca, Emmanuel, Freedman, Gabriel E., Garver-Daniels, Nate, Gentile, Peter A., Glaser, Joseph, Good, Deborah C., Gültekin, Kayhan, Hazboun, Jeffrey S., Jennings, Ross J., Johnson, Aaron D., Jones, Megan L., Kaiser, Andrew R., Kaplan, David L., Kelley, Luke Zoltan, Key, Joey S., Laal, Nima, Lam, Michael T., Lamb, William G., Lazio, T. Joseph W., Lewandowska, Natalia, Liu, Tingting, Lorimer, Duncan R., Luo, Jing, Lynch, Ryan S., Ma, Chung-Pei, Madison, Dustin R., McEwen, Alexander, McKee, James W., McLaughlin, Maura A., Meyers, Patrick M., Mingarelli, Chiara M. F., Mitridate, Andrea, Ng, Cherry, Nice, David J., Ocker, Stella Koch, Olum, Ken D., Pennucci, Timothy T., Pol, Nihan S., Ransom, Scott M., Ray, Paul S., Romano, Joseph D., Sardesai, Shashwat C., Schmitz, Kai, Siemens, Xavier, Simon, Joseph, Siwek, Magdalena S., Fiscella, Sophia V. Sosa, Spiewak, Renée, Stairs, Ingrid H., Stinebring, Daniel R., Stovall, Kevin, Sun, Jerry P., Swiggum, Joseph K., Taylor, Jacob, Taylor, Stephen R., Turner, Jacob E., Unal, Caner, Vallisneri, Michele, Vigeland, Sarah J., Wahl, Haley M., Witt, Caitlin A., Young, Olivia

We present the results of a Bayesian search for gravitational wave (GW) memory in the NANOGrav 12.5-yr data set. We find no convincing evidence for any gravitational wave memory signals in this data set (Bayes factor = 2.8). As such, we go on to plac

Externí odkaz: http://arxiv.org/abs/2307.13797

The Parkes Pulsar Timing Array Third Data Release

Autor: Zic, Andrew, Reardon, Daniel J., Kapur, Agastya, Hobbs, George, Mandow, Rami, Curyło, Małgorzata, Shannon, Ryan M., Askew, Jacob, Bailes, Matthew, Bhat, N. D. Ramesh, Cameron, Andrew, Chen, Zu-Cheng, Dai, Shi, Di Marco, Valentina, Feng, Yi, Kerr, Matthew, Kulkarni, Atharva, Lower, Marcus E., Luo, Rui, Manchester, Richard N., Miles, Matthew T., Nathan, Rowina S., Osłowski, Stefan, Rogers, Axl F., Russell, Christopher J., Sarkissian, John M., Shamohammadi, Mohsen, Spiewak, Renée, Thyagarajan, Nithyanandan, Toomey, Lawrence, Wang, Shuangqiang, Zhang, Lei, Zhang, Songbo, Zhu, Xing-Jiang

We present the third data release from the Parkes Pulsar Timing Array (PPTA) project. The release contains observations of 32 pulsars obtained using the 64-m Parkes "Murriyang" radio telescope. The data span is up to 18 years with a typical cadence o

Externí odkaz: http://arxiv.org/abs/2306.16230

The Green Bank North Celestial Cap Survey. VIII. 21 New Pulsar Timing Solutions

Autor: Fiore, William, Levin, Lina, McLaughlin, Maura A., Anumarlapudi, Akash, Kaplan, David L., Swiggum, Joseph K., Agazie, Gabriella Y., Bavisotto, Robert, Chawla, Pragya, DeCesar, Megan E., Dolch, Timothy, Fonseca, Emmanuel, Kaspi, Victoria M., Komassa, Zachary, Kondratiev, Vlad I., van Leeuwen, Joeri, Lewis, Evan F., Lynch, Ryan S., McEwen, Alexander E., Mundorf, Rusty, Noori, Hind Al, Parent, Emilie, Pleunis, Ziggy, Ransom, Scott M., Siemens, Xavier, Spiewak, Renée, Stairs, Ingrid H., Surnis, Mayuresh, Tobin, Thomas J.

We present timing solutions for 21 pulsars discovered in 350 MHz surveys using the Green Bank Telescope (GBT). All were discovered in the Green Bank North Celestial Cap pulsar survey, with the exception of PSR J0957-0619, which was found in the GBT 3

Externí odkaz: http://arxiv.org/abs/2305.13624