First Pulsar Polarization Array Limits on Ultralight Axion-like Dark Matter

Autor: Xue, Xiao, Dai, Shi, Luu, Hoang Nhan, Liu, Tao, Ren, Jing, Shu, Jing, Zhao, Yue, Zic, Andrew, Bhat, N. D. Ramesh, Chen, Zu-Cheng, Feng, Yi, Hobbs, George, Kapur, Agastya, Manchester, Richard N., Mandow, Rami, Mishra, Saurav, Reardon, Daniel J., Russell, Christopher J., Shannon, Ryan M., Wang, Shuangqiang, Zhang, Lei, Zhang, Songbo, Zhu, Xingjiang

We conduct the first-ever Pulsar Polarization Array (PPA) analysis to detect the ultralight Axion-Like Dark Matter (ALDM) using the polarization data of 22 millisecond pulsars from the third data release of Parkes Pulsar Timing Array. As one of the m

Externí odkaz: http://arxiv.org/abs/2412.02229

Comparing recent PTA results on the nanohertz stochastic gravitational wave background

Autor: The International Pulsar Timing Array Collaboration, Agazie, G., Antoniadis, J., Anumarlapudi, A., Archibald, A. M., Arumugam, P., Arumugam, S., Arzoumanian, Z., Askew, J., Babak, S., Bagchi, M., Bailes, M., Nielsen, A. -S. Bak, Baker, P. T., Bassa, C. G., Bathula, A., Bécsy, B., Berthereau, A., Bhat, N. D. R., Blecha, L., Bonetti, M., Bortolas, E., Brazier, A., Brook, P. R., Burgay, M., Burke-Spolaor, S., Burnette, R., Caballero, R. N., Cameron, A., Case, R., Chalumeau, A., Champion, D. J., Chanlaridis, S., Charisi, M., Chatterjee, S., Chatziioannou, K., Cheeseboro, B. D., Chen, S., Chen, Z. -C., Cognard, I., Cohen, T., Coles, W. A., Cordes, J. M., Cornish, N. J., Crawford, F., Cromartie, H. T., Crowter, K., Curyło, M., Cutler, C. J., Dai, S., Dandapat, S., Deb, D., DeCesar, M. E., DeGan, D., Demorest, P. B., Deng, H., Desai, S., Desvignes, G., Dey, L., Dhanda-Batra, N., Di Marco, V., Dolch, T., Drachler, B., Dwivedi, C., Ellis, J. A., Falxa, M., Feng, Y., Ferdman, R. D., Ferrara, E. C., Fiore, W., Fonseca, E., Franchini, A., Freedman, G. E., Gair, J. R., Garver-Daniels, N., Gentile, P. A., Gersbach, K. A., Glaser, J., Good, D. C., Goncharov, B., Gopakumar, A., Graikou, E., Grießmeier, J. -M., Guillemot, L., Gültekin, K., Guo, Y. J., Gupta, Y., Grunthal, K., Hazboun, J. S., Hisano, S., Hobbs, G. B., Hourihane, S., Hu, H., Iraci, F., Islo, K., Izquierdo-Villalba, D., Jang, J., Jawor, J., Janssen, G. H., Jennings, R. J., Jessner, A., Johnson, A. D., Jones, M. L., Joshi, B. C., Kaiser, A. R., Kaplan, D. L., Kapur, A., Kareem, F., Karuppusamy, R., Keane, E. F., Keith, M. J., Kelley, L. Z., Kerr, M., Key, J. S., Kharbanda, D., Kikunaga, T., Klein, T. C., Kolhe, N., Kramer, M., Krishnakumar, M. A., Kulkarni, A., Laal, N., Lackeos, K., Lam, M. T., Lamb, W. G., Larsen, B. B., Lazio, T. J. W., Lee, K. J., Levin, Y., Lewandowska, N., Littenberg, T. B., Liu, K., Liu, T., Liu, Y., Lommen, A., Lorimer, D. R., Lower, M. E., Luo, J., Luo, R., Lynch, R. S., Lyne, A. G., Ma, C. -P., Maan, Y., Madison, D. R., Main, R. A., Manchester, R. N., Mandow, R., Mattson, M. A., McEwen, A., McKee, J. W., McLaughlin, M. A., McMann, N., Meyers, B. W., Meyers, P. M., Mickaliger, M. B., Miles, M., Mingarelli, C. M. F., Mitridate, A., Natarajan, P., Nathan, R. S., Ng, C., Nice, D. J., Niţu, I. C., Nobleson, K., Ocker, S. K., Olum, K. D., Osłowski, S., Paladi, A. K., Parthasarathy, A., Pennucci, T. T., Perera, B. B. P., Perrodin, D., Petiteau, A., Petrov, P., Pol, N. S., Porayko, N. K., Possenti, A., Prabu, T., Leclere, H. Quelquejay, Radovan, H. A., Rana, P., Ransom, S. M., Ray, P. S., Reardon, D. J., Rogers, A. F., Romano, J. D., Russell, C. J., Samajdar, A., Sanidas, S. A., Sardesai, S. C., Schmiedekamp, A., Schmiedekamp, C., Schmitz, K., Schult, L., Sesana, A., Shaifullah, G., Shannon, R. M., Shapiro-Albert, B. J., Siemens, X., Simon, J., Singha, J., Siwek, M. S., Speri, L., Spiewak, R., Srivastava, A., Stairs, I. H., Stappers, B. W., Stinebring, D. R., Stovall, K., Sun, J. P., Surnis, M., Susarla, S. C., Susobhanan, A., Swiggum, J. K., Takahashi, K., Tarafdar, P., Taylor, J., Taylor, S. R., Theureau, G., Thrane, E., Thyagarajan, N., Tiburzi, C., Toomey, L., Turner, J. E., Unal, C., Vallisneri, M., van der Wateren, E., van Haasteren, R., Vecchio, A., Krishnan, V. Venkatraman, Verbiest, J. P. W., Vigeland, S. J., Wahl, H. M., Wang, S., Wang, Q., Witt, C. A., Wang, J., Wang, L., Wayt, K. E., Wu, Z., Young, O., Zhang, L., Zhang, S., Zhu, X. -J., Zic, A.

The Australian, Chinese, European, Indian, and North American pulsar timing array (PTA) collaborations recently reported, at varying levels, evidence for the presence of a nanohertz gravitational wave background (GWB). Given that each PTA made differ

Externí odkaz: http://arxiv.org/abs/2309.00693

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

Thermal Vision for Soil Assessment in a Multipurpose Environmental Chamber under Martian Conditions towards Robot Navigation

Autor: Castilla-Arquillo, Raul, Mandow, Anthony, Perez-del-Pulgar, Carlos J., Alvarez-Llamas, Cesar, Vadillo, Jose M., Laserna, Javier

Soil assessment is important for mobile robot planning and navigation on natural and planetary environments. Terramechanic characteristics can be inferred from the thermal behaviour of soils under the influence of sunlight using remote sensors such a

Externí odkaz: http://arxiv.org/abs/2304.13525

Evaluating the prevalence of spurious correlations in pulsar timing array datasets

Autor: Zic, Andrew, Hobbs, George, Shannon, R. M., Reardon, Daniel, Goncharov, Boris, Bhat, N. D. Ramesh, Cameron, Andrew, Dai, Shi, Dawson, J. R., Kerr, Matthew, Manchester, R. N., Mandow, Rami, Marshman, Tommy, Russell, Christopher J., Thyagarajan, Nithyanandan, Zhu, X. -J.

Pulsar timing array collaborations have recently reported evidence for a noise process with a common spectrum among the millisecond pulsars in the arrays. The spectral properties of this common-noise process are consistent with expectations for an is

Externí odkaz: http://arxiv.org/abs/2207.12237