Results 51 to 60 of about 605 (176)

Pulse Profile Variability of PSR J1022+1001 in NANOGrav Data

The Astrophysical Journal
Pulse profile stability is a central assumption of standard pulsar timing methods. Thus, it is important for pulsar timing array experiments such as the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) to account for any pulse ...
William Fiore, Maura A. McLaughlin, 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, Lankeswar Dey, Timothy Dolch, Elizabeth C. Ferrara, Emmanuel Fonseca, Gabriel E. Freedman, Nate Garver-Daniels, Peter A. Gentile, Joseph Glaser, Deborah C. Good, Jeffrey S. Hazboun, Ross J. Jennings, Megan L. Jones, David L. Kaplan, Matthew Kerr, Michael T. Lam, Duncan R. Lorimer, Jing Luo, Ryan S. Lynch, Alexander McEwen, 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   +48 more
doaj   +1 more source

The Gravitational-wave Background Null Hypothesis: Characterizing Noise in Millisecond Pulsar Arrival Times with the Parkes Pulsar Timing Array

The Astrophysical Journal Letters, 2023
The noise in millisecond pulsar (MSP) timing data can include contributions from observing instruments, the interstellar medium, the solar wind, solar system ephemeris errors, and the pulsars themselves.
Daniel J. Reardon, Andrew Zic, Ryan M. Shannon, Valentina Di Marco, George B. Hobbs, Agastya Kapur, Marcus E. Lower, Rami Mandow, Hannah Middleton, Matthew T. Miles, Axl F. Rogers, Jacob Askew, Matthew Bailes, N. D. Ramesh Bhat, Andrew Cameron, Matthew Kerr, Atharva Kulkarni, Richard N. Manchester, Rowina S. Nathan, Christopher J. Russell, Stefan Osłowski, Xing-Jiang Zhu   +21 more
doaj   +1 more source

DAMP Laden Extracellular Vesicles From the Airways of Patients With Severe SARS‐CoV‐2 Respiratory Infection Compromise Inflammation and Cellular Metabolism

Journal of Extracellular Vesicles, Volume 15, Issue 6, June 2026.
Extracellular vesicles from severe COVID‐19 airways carry depleted miRNAs and elevated DAMPs, reprogramming monocytes toward senescence, impaired metabolism, and predominantly reduced cytokine responses. However, they drive excess IL‐8 production, amplifying neutrophil recruitment and dysfunctional inflammation across the respiratory tract.
April Rees, Oliver Richards, Molly E Raikes, Megan Chambers, Sophie G Reed, Ceri Battle, Hannah Toghill, Luke Newey, Tyler J Joseph, Haiyan An, Hui Zhang, Iain Perry, Jason Webber, Nicholas Jones, Catherine A Thornton   +14 more
wiley   +1 more source

Pulsatile LH release in male and female Sprague Dawley and Wistar rats in different reproductive states

Journal of Neuroendocrinology, Volume 38, Issue 6, June 2026.
Abstract This study aims to provide a detailed characterization of luteinizing hormone (LH) pulsatility in male and female Sprague–Dawley and Wistar rats, utilizing a minimally invasive tail‐tip blood sampling approach across various reproductive states.
Nabil Nasri, Vincent Prevot, Daniela Fernandois   +2 more
wiley   +1 more source

An Improved Wiener Filtration Method for Constructing the Ensemble Pulsar Timescale

The Astrophysical Journal
An improved Wiener filtration (WF) method for constructing the ensemble pulsar timescale (EPT) is proposed to solve the existing problems in the WF algorithm.
Zhehao Zhang, Minglei Tong, Tinggao Yang
doaj   +1 more source

Proteomic and Super‐Resolution Analyses of Murine Brown Adipocyte‐Derived Extracellular Vesicles

Journal of Extracellular Biology, Volume 5, Issue 5, May 2026.
Graphical Abstract ABSTRACT Thermogenic brown adipocytes (BAs) are not only an energy sink but also regulate systemic metabolic health through secreted factors and extracellular vesicles (EVs). Here, we investigate the baseline profiles BA‐EVs and how cold‐induced thermogenesis alters the proteome of BA‐EVs.
Menchus Quan, Yi‐Kai Liu, Maryam Mahmoodi, Muhammad Asif, Madeline Kay, Yongjie Yang, Fang Huang, Weiguo Andy Tao, Shihuan Kuang   +8 more
wiley   +1 more source

Pulsar Timing Response to Gravitational Waves with Spherical Wave Fronts from a Massive Compact Source in the Quadrupole Approximation

The Astrophysical Journal, 2023
Pulsar timing arrays (PTAs) are searching for nanohertz-frequency gravitational waves (GWs) through cross-correlation of pulse arrival times from a set of radio pulsars.
Ryousuke Kubo, Kakeru Yamahira, Hideki Asada   +2 more
doaj   +1 more source

Methods for calibrating a cesium atomic clock using a pulsar time-scale

Monthly Notices of the Royal Astronomical Society
ABSTRACT Some millisecond pulsars exhibit extremely high rotational stability, which can form a pulsar-based time-scale. We employed a post-correction method to evaluate the feasibility of the pulsar time-scale (PT) as a time reference to calibrate the frequency of cesium clocks getting more accurate time signals.
Linlin Wang, Zhehao Zhang, Minglei Tong
openaire   +1 more source

A Perspective of Multi‐Reflecting TOF MS

Mass Spectrometry Reviews, Volume 45, Issue 3, Page 476-506, May/June 2026.
ABSTRACT Time‐of‐flight mass spectrometry (TOF MS) excels in rapid and high‐sensitivity analysis, making it a cornerstone of analytical chemistry. But as sample complexity explodes in omics studies, so does the need for higher resolving power to ensure accurate results.
A. N. Verenchikov, V. V. Makarov, A. V. Vorobyev, S. N. Kirillov   +3 more
wiley   +1 more source

Noisy Timing Behavior is a Feature of Central Compact Object Pulsars

The Astrophysical Journal
We present a timing study of the three known central compact object (CCO) pulsars, isolated cooling neutron stars in supernova remnants, using observations from Chandra, XMM-Newton, and NICER spanning two decades.
K. I. Perez, E. V. Gotthelf, J. P. Halpern   +2 more
doaj   +1 more source