Zobrazeno 1 - 10
of 794
pro vyhledávání: '"Freire, Paulo"'
Autor:
Freire, Paulo C. C., Wex, Norbert
Publikováno v:
Living Reviews in Relativity, 27, 5 (2024)
The discovery of the first pulsar in a binary star system, the Hulse--Taylor pulsar, 50 years ago opened up an entirely new field of experimental gravity. For the first time it was possible to investigate strong-field and radiative aspects of the gra
Externí odkaz:
http://arxiv.org/abs/2407.16540
Autor:
Bernadich, Miquel Colom i, Krishnan, Vivek Venkatraman, Champion, David J., Freire, Paulo C. C., Kramer, Michael, Tauris, Thomas M., Bailes, Matthew, Ridolfi, Alessandro, Serylak, Maciej
Publikováno v:
A&A 690, A253 (2024)
PSR J1227$-$6208 is a 34.53-ms recycled pulsar with a massive companion. This system has long been suspected to belong to the emerging class of massive recycled pulsar-ONeMg white dwarf systems such as PSR J2222$-$0137, PSR J1528$-$3146 and J1439$-$5
Externí odkaz:
http://arxiv.org/abs/2407.13593
Publikováno v:
A&A 691, A47 (2024)
Precise millisecond pulsar (MSP) positions determined with very long baseline interferometry (VLBI) hold the key to building the connection between the kinematic and dynamic reference frames respectively used by VLBI and pulsar timing. The frame conn
Externí odkaz:
http://arxiv.org/abs/2407.13324
Autor:
Hu, Huanchen, Freire, Paulo C. C.
Neutron stars (NSs) are compact objects that host the densest forms of matter in the observable universe, providing unique opportunities to study the behaviour of matter at extreme densities. While precision measurements of NS masses through pulsar t
Externí odkaz:
http://arxiv.org/abs/2403.18785
Autor:
Meng, Lingqi, Zhu, Weiwei, Kramer, Michael, Miao, Xueli, Desvignes, Gregory, Shao, Lijing, Hu, Huanchen, Freire, Paulo C. C., Zhang, Yongkun, Xue, Mengyao, Fang, Ziyao, Champion, David J., Yuan, Mao, Miao, Chenchen, Niu, Jiarui, Fu, Qiuyang, Yao, Jumei, Guo, Yanjun, Zhang, Chengmin
Publikováno v:
ApJ 966 (2024) 46
We observe systematic profile changes in the visible pulsar of the compact double neutron star system PSR~J1946+2052 using observations with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). The interpulse of PSR~J1946+2052 changed fr
Externí odkaz:
http://arxiv.org/abs/2403.17828
Autor:
McCarver, Amaris V., Maccarone, Thomas J., Ransom, Scott M., Clarke, Tracy E., Giacintucci, Simona, Peters, Wendy M., Polisensky, Emil, Nyland, Kristina, Gautam, Tasha, Freire, Paulo C. C., Rangelov, Blagoy
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:
http://arxiv.org/abs/2312.11694
Autor:
Zhou, Dengke, Wang, Pei, Li, Di, Fang, Jianhua, Miao, Chenchen, Freire, Paulo C. C., Zhang, Lei, Zhang, Dandan, Chen, Huaxi, Feng, Yi, Xiao, Yifan, Xie, Jintao, Zhang, Xu, Jin, Chenwu, Wang, Han, Ke, Yinan, Guo, Xuerong, Zhao, Rushuang, Niu, Chenhui, Zhu, Weiwei, Xue, Mengyao, Wang, Yabiao, Wu, Jiafu, Gan, Zhenye, Sun, Zhongyi, Wang, Chengjie, Zhang, Junshuo, Cao, Jinhuang, Lu, Wanjin
Publikováno v:
Sci. China-Phys. Mech. Astron. 67, 269512 (2024)
Globular clusters harbor numerous millisecond pulsars, but long-period pulsars ($P \gtrsim 100$ ms) are rarely found. In this study, we employed a fast folding algorithm to analyze observational data from multiple globular clusters obtained by the Fi
Externí odkaz:
http://arxiv.org/abs/2312.05868
Autor:
Zhang, Lei, Freire, Paulo C. C., Ridolfi, Alessandro, Pan, Zhichen, Zhao, Jiaqi, Heinke, Craig O., Chen, Jianxing, Cadelano, Mario, Pallanca, Cristina, Hou, Xian, Fu, Xiaoting, Dai, Shi, Gugercinoglu, Erbil, Guo, Meng, Hessels, Jason, Hu, Jiale, Li, Guodong, Ni, Mengmeng, Pan, Jingshan, Ransom, Scott M., Ruan, Qitong, Stairs, Ingrid, Tsai, Chao-Wei, Wang, Pei, Wang, Long, Wang, Na, Wu, Qingdong, Yuan, Jianping, Zhang, Jie, Zhu, Weiwei, Zhang, Yongkun, Li, Di
Publikováno v:
ApJS, 2013, 269:56
We report on a comprehensive multi-wavelength study of the pulsars in the globular cluster (GC) M5, including the discovery of M5G, a new compact non-eclipsing "black widow" pulsar. Thanks to the analysis of 34 years of radio data taken with the FAST
Externí odkaz:
http://arxiv.org/abs/2312.05835
Autor:
Wu, Yuxiao, Pan, Zhichen, Qian, Lei, Ransom, Scott, Eatough, Ralph, Wang, BoJun, Freire, Paulo, Liu, Kuo, Yan, Zhen, Luo, Jintao, Zhang, Liyun, Li, Minghui, Yin, Dejiang, Li, Baoda, Li, Yifeng, Dai, Yinfeng, Li, Yaowei, Zhang, Xinnan, Liu, Tong, Pan, Yu
We present the discovery of three pulsars in the Globular Cluster (GC) M15 (NGC 7078) by the Five-hundred-meter Aperture Spherical radio Telescope (FAST). PSR J2129+1210J (M15J) is a millisecond pulsar with a spin period of 11.84 ms and a dispersion
Externí odkaz:
http://arxiv.org/abs/2312.06067