Results 41 to 50 of about 12,076,896 (214)

Gravitational wave research using pulsar timing arrays

, 2017
A pulsar timing array (PTA) refers to a program of regular, high-precision timing observations of a widely distributed array of millisecond pulsars. Here we review the status of the three primary PTA projects and the joint International Pulsar Timing ...
Dai, Shi (R20363), Hobbs, George, Shi Dai, George Hobbs   +3 more
core   +1 more source

Improving Pulsar Timing through Interstellar Scatter Correction [PDF]

, 2007
Though pulsar timing has confirmed the existence of gravitational waves, no technique has directly detected them. Jenet et al. state the requirements for the Parkes Pulsar Timing Array (PPTA) to make a significant detection of the stochastic ...
Hemberger, Daniel
core   +1 more source

Decade-long Timing of Four GMRT Discovered Millisecond Pulsars

The Astrophysical Journal
The discovery and timing follow up of millisecond pulsars (MSPs) are necessary not just for their usefulness in pulsar timing arrays (PTAs) but also for investigating their own intriguing properties.
Shyam S. Sharma, Jayanta Roy, Bhaswati Bhattacharyya, Lina Levin   +3 more
doaj   +1 more source

A Method to Estimate the Cooling Time of Ultra-Relativistic Electrons in Pulsar Wind Nebulae [PDF]

American Journal of Astronomy and Astrophysics, 2015
Pulsar is a highly magnetized rotating neutron star. It continuously emits a wind of relativistic electrons and positrons. This wind creates an electron-positron-cloud around the pulsar. This cloud, which is full of relativistic electrons and positrons, is called a Pulsar Wind Nebula (PWN).
openaire   +1 more source

Transcriptome and proteome analyses reveal divergent adaptive strategies in nasopharyngeal epithelial cells and nasopharyngeal carcinoma cells under ultra‐low background radiation

Deep Underground Science and Engineering, EarlyView.
This study demonstrates that the ultra‐low background radiation environment in deep underground laboratories significantly inhibits the proliferation of both normal nasopharyngeal epithelial cells (HNEPC) and nasopharyngeal carcinoma cells (HNE‐1) cells, with malignant cells exhibiting higher sensitivity.
Yuhao Zou, Qi Wu, Jirui Wen, Ling Wang, Can Li, Juan Cheng, Tengfei Ma, Chuhan Lv, Shixi Liu, Mingzhong Gao, Ruihua Dong, Jianxiong Zhang, Jingxuan Wu, Heping Xie, Jiang Wu, Jifeng Liu   +15 more
wiley   +1 more source

Stochastic backgrounds and pulsar timing arrays

, 2018
Response of an Earth-pulsar system to a passing GW. Pulsar timing arrays. Response to continuous signals and to stochastic backgrounds.
Michele Maggiore
core   +1 more source

A Transdimensional Sampling Framework for Pulsar Timing Noise Modeling

The Astrophysical Journal
A careful characterisation of the noise processes in pulsar timing data is a prerequisite for pulsar timing array experiments. While single-pulsar noise analyses are crucial for both gravitational-wave searches and astrophysical studies, they are often ...
Valentina Di Marco, Nir Guttman, Matthew T. Miles, Andrew Zic, Ryan M. Shannon, Eric Thrane   +5 more
doaj   +1 more source

Have pulsar timing array methods detected a cosmological phase transition?

Physical Review D
We show that the recent detection of a gravitational wave (GW) background reported by various pulsar timing array (PTA) collaborations including NANOGrav-15yr, PPTA, EPTA, and CPTA can be explained in terms of first order phase transitions (FOPTs) from dark sector models (DSM).
Andrea Addazi, Yi-Fu Cai, Antonino Marcianò, Luca Visinelli   +3 more
openaire   +2 more sources

Interventional therapies for chronic heart failure: An overview of recent developments

ESC Heart Failure, Volume 12, Issue 2, Page 1081-1094, April 2025.
Abstract Heart failure (HF), the final manifestation of most cardiovascular diseases, has become a major global health concern, affecting millions of individuals. Despite basic drug treatments, patients present with high morbidity and mortality rates. However, recent advancements in interventional therapy have shown promising results in improving the ...
Bingchen Guo, Si Shi, Yutong Guo, Jie Xiong, Bo Wang, Zengxiang Dong, Dianyu Gao, Yingfeng Tu   +7 more
wiley   +1 more source

Long-term Timing Evolution of Four Anomalous X-Ray Pulsars

The Astrophysical Journal
Anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs) are believed to be manifestations of magnetars. Typically, AXPs exhibit higher X-ray luminosities, whereas SGRs are generally fainter and display significantly high signal-to-noise ratios
Han-Long Peng, Shan-Shan Weng, Ming-Yu Ge, Shi-Qi Zhou, Erbil Gügercinoğlu, Wen-Tao Ye, You-Li Tuo, Liang Zhang, Juan Zhang, Shi-Jie Zheng, Yu-Jia Zheng, Xian-Ao Wang   +11 more
doaj   +1 more source