Results 91 to 100 of about 111,592 (291)

PSR J1947−1120: A New Huntsman Millisecond Pulsar Binary

The Astrophysical Journal
We present the discovery of PSR J1947–1120, a new huntsman millisecond pulsar with a red giant companion star in a 10.3 day orbit. This pulsar was found via optical, X-ray, and radio follow-up of the previously unassociated γ -ray source 4FGL J1947.6 ...
Jay Strader, Paul S. Ray, Ryan Urquhart, Samuel J. Swihart, Laura Chomiuk, Elias Aydi, Eric C. Bellm, Kristen C. Dage, Megan E. DeCesar, Julia S. Deneva, Maura A. McLaughlin, Isabella Molina, Teresa Panurach, Kirill V. Sokolovsky   +13 more
doaj   +1 more source

Modeling pulse profiles of accreting millisecond pulsars [PDF]

, 2008
I review the basic observational properties of accreting millisecond pulsars that are important for understanding the physics involved in formation of their pulse profiles. I then discuss main effects responsible for shaping these profiles.
Alessandro Patruno, Diego Altamirano, J. Poutanen, Manuel Linares, Nanda Rea, Nathalie Degenaar, Paolo Soleri, Piergiorgio Casella, Rudy Wijnands   +8 more
core   +2 more sources

The Role of XMM–Newton in the Investigation of Persistent BeXRBs

Astronomische Nachrichten, Volume 346, Issue 1, January 2025.
ABSTRACT The persistent BeXRBs are a class of high‐mass X‐ray binaries (HMXRBs), which are characterized by persistent low X‐ray luminosities (LX~1034$$ {L}_{\mathrm{X}}\sim {10}^{34} $$ erg s −1$$ {}^{-1} $$) and wide (Porb>$$ {P}_{\mathrm{orb}}> $$ 30 days), almost circular orbits. In these sources the NS is slowly rotating (with Pspin$$ {P}_{\mathrm{
Nicola La Palombara, Lara Sidoli, Sandro Mereghetti, Gian Luca Israel, Paolo Esposito   +4 more
wiley   +1 more source

Timing stability of millisecond pulsars and prospects for gravitational-wave detection [PDF]

, 2009
Analysis of high-precision timing observations of an array of approx. 20 millisecond pulsars (a so-called "timing array") may ultimately result in the detection of a stochastic gravitational-wave background.
A. W. Hotan, Backer, Bailes, Bailes, Bell, Bhat, Boyle, Caldwell, Camilo, Cognard, D. J. Champion, D. Yardley, Damour, Edwards, Edwards, Edwards, F. A. Jenet, Foster, Foster, G. B. Hobbs, Grishchuk, Hellings, Hemberger, Hobbs, Hobbs, Hobbs, Hotan, Hotan, Hotan, J. M. Sarkissian, J. P. W. Verbiest, Jacoby, Jacoby, Jaffe, Janssen, Jenet, Jenet, Jin, Johnston, Jonas, Kaspi, Kramer, Lee, Lorimer, Lorimer, Lyne, L��hmer, M. Bailes, Maggiore, Manchester, Matsakis, N. D. R. Bhat, Nan, Nice, Ord, R. N. Manchester, Romani, S. Burke-Spolaor, Sandhu, Sazhin, Segelstein, Sesana, Sesana, Splaver, Standish, Staveley-Smith, Taylor, Toscano, van Straten, van Straten, van Straten, Verbiest, W. A. Coles, W. van Straten, Walker, Wyithe, X. P. You, You   +77 more
core   +3 more sources

Beyond Accretion Limits: The Rise of Pulsating Gems

Astronomische Nachrichten, Volume 346, Issue 1, January 2025.
ABSTRACT The discovery of several ultraluminous X‐ray sources exhibiting fast and rapidly evolving X‐ray pulsations unequivocally associates these sources with accreting neutron stars orbiting relatively massive companion stars (> 8M ⊙$$ {}_{\odot } $$).
Gian Luca Israel, Roberta Amato, Matteo Imbrogno, Nicoló Oreste Pinciroli Vago, on behalf of a Larger Team, Guillermo Andres Rodríguez Castillo, Andrea Belfiore, Luigi Stella, Matteo Bachetti, Felix Fürst, Dom Walton, Matthew Middleton, Murray Brightman, Fabio Pintore, Ciro Pinto, Silvia Conforti, Luca Zampieri, Chiara Salvaggio, Anna Wolter, Andrea Tiengo, Andrea De Luca, Paolo Esposito, Ruben Salvaterra, Hannah Earnshaw, Tim Roberts, Andres Gúrpide, Sara Motta   +26 more
wiley   +1 more source

Pevatron at the Galactic Center: multi-wavelength signatures from millisecond pulsars [PDF]

Journal of Cosmology and Astroparticle Physics, 2018
Diffuse TeV emission has been observed by H.E.S.S. in the Galactic Center region, in addition to the GeV gamma rays observed by Fermi. We propose that a population of unresolved millisecond pulsars located around the Galactic Center, suggested as ...
C. Guépin, L. Rinchiuso, K. Kotera, E. Moulin, T. Pierog, J. Silk   +5 more
semanticscholar   +1 more source

On an Autonomous Pulsar Observation–Based Timekeeping Method for Deep Space

International Journal of Aerospace Engineering, Volume 2025, Issue 1, 2025.
To provide autonomous and accurate time service for deep space missions, a pulsar observation–based timekeeping method is documented in this paper, which utilizes pulsars as the time information source. Firstly, the pulsar observation noise is remodeled as the combination of the Gaussian noise and colored noise, and the detailed expression of the ...
Shibin Song, Xiaowei Jin, Haixia Wang, Giovanni Palmerini   +3 more
wiley   +1 more source

General-relativistic Simulations of Four States of Accretion onto Millisecond Pulsars [PDF]

, 2017
Accreting neutron stars can power a wide range of astrophysical phenomena including short- and long-duration gamma-ray bursts, ultra-luminous X-ray sources, and X-ray binaries.
K. Parfrey, A. Tchekhovskoy
semanticscholar   +1 more source

Search for Short‐Duration Transient Gravitational Waves Emitted by Neutron Star Glitches

Annalen der Physik, Volume 536, Issue 2, February 2024.
The observation rate of pulsar glitches is limited by their electromagnetic observations. There could be a population of the isolated neutron stars in the galaxy for which there is no electromagnetic observations, but they can produce gravitational waves. The all‐sky search for gravitational waves provides better localization of the source sky position
Dixeena Lopez, the LIGO, Virgo, and KAGRA collaborations   +3 more
wiley   +1 more source

Five-Hundred-Meter Aperture Spherical Radio Telescope (FAST): A Powerful Explorer of Exotic Pulsars

Universe
Located in southern China, the five-hundred-meter aperture spherical radio telescope (FAST) is the world’s most sensitive radio telescope, especially for pulsar observation. Since its commissioning in 2016 and full operation in 2020, it has detected over
Cheng-Min Zhang, Zhi-Yao Yang, Xiang-Han Cui, De-Hua Wang, Yi-Yan Yang, Xin-Ji Wu, Jian-Wei Zhang, Shu Ma, Yun-Gang Zhou, Lin-Yan Jiang   +9 more
doaj   +1 more source