Results 81 to 90 of about 101,445 (253)

The XinJiang Astronomical Observatory NSRT Pulsar Data Archive

Advances in Astronomy, Volume 2019, Issue 1, 2019., 2019
The sensitivity of our pulsar observation system with typical integration time of 16 minutes has reached 0.4 mJy after we have upgraded the receiver cooling system of NanShan 25‐m radio telescope (NSRT) at Xinjiang Astronomical Observatory (XAO) in 2002. About 280 pulsars were observed after the upgrade.
Hailong Zhang, Markus Demleitner, Jie Wang, Na Wang, Jun Nie, Jianping Yuan, Junhui Fan   +6 more
wiley   +1 more source

Investigating Unassociated Fermi-LAT sources for the search of Gamma ray pulsars including Millisecond pulsars using semicoherent approch [PDF]

EPJ Web of Conferences
The search for gamma-ray pulsars including millisecond pulsars (MSPs) among unassociated Fermi-Large Area Telescope (LAT) sources offers an opportunity to study these rapidly rotating, highly magnetized neutron stars.
Hrishikesh Chandana A., Morselli Aldo, Belardinelli Daniele, Rodriguez Fernandez Gonzalo, D’Antonio Sabrina, Fafone Viviana   +5 more
doaj   +1 more source

2FGL J0846.0+2820: A new neutron star binary with a giant secondary and variable $\gamma$-ray emission [PDF]

, 2017
We present optical photometric and spectroscopic observations of the likely stellar counterpart to the unassociated \emph{Fermi}-Large Area Telescope (LAT) $\gamma$-ray source 2FGL J0846.0+2820, selected for study based on positional coincidences of ...
Brodie, Jean P., Cheung, C. C., Chomiuk, Laura, Haislip, Joshua, Johnson, Tyrel J., Larsen, Søren, Reichart, Daniel E., Sand, David, Shishkovsky, Laura, Simonian, Gregory V., Strader, Jay, Swihart, Samuel J., Tremou, Evangelia, Wasserman, Asher   +13 more
core   +3 more sources

A massive millisecond pulsar in an eccentric binary [PDF]

, 2016
The recent discovery of a population of eccentric (e ~ 0.1) millisecond pulsar (MSP) binaries with low-mass white dwarf companions in the Galactic field represents a challenge to evolutionary models that explain MSP formation as recycling: all such ...
E. Barr, P. Freire, Michael Kramer, D. Champion, M. Berezina, C. Bassa, A. Lyne, B. Stappers   +7 more
semanticscholar   +1 more source

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

Binary and Millisecond Pulsars

Living Reviews in Relativity, 2008
We review the main properties, demographics and applications of binary and millisecond radio pulsars. Our knowledge of these exciting objects has greatly increased in recent years, mainly due to successful surveys which have brought the known pulsar ...
Lorimer Duncan R.
doaj  

Discovery of Two Relativistic Neutron Star-White Dwarf Binaries [PDF]

, 2000
We have discovered two recycled pulsars in relativistic orbits as part of the first high-frequency survey of intermediate Galactic latitudes. PSR J1157-5112 is a 44 ms pulsar and the first recycled pulsar with an ultra-massive (M > 1.14 Mo) white dwarf ...
Johnston S., Johnston S., Lorimer D. R., M. Bailes, Manchester R. N., R. T. Edwards, Staveley-Smith L., Tauris T. M., Tauris T. M., van den Heuvel E. P. J., van den Heuvel E. P. J., van den Heuvel E. P. J.   +11 more
core   +2 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

Timing Analysis of the 2022 Outburst of the Accreting Millisecond X-Ray Pulsar SAX J1808.4-3658: Hints of an Orbital Shrinking

The Astrophysical Journal Letters, 2023
We present a pulse timing analysis of NICER observations of the accreting millisecond X-ray pulsar SAX J1808.4−3658 during the outburst that started on 2022 August 19.
Giulia Illiano, Alessandro Papitto, Andrea Sanna, Peter Bult, Filippo Ambrosino, Arianna Miraval Zanon, Francesco Coti Zelati, Luigi Stella, Diego Altamirano, Maria Cristina Baglio, Enrico Bozzo, Luciano Burderi, Domitilla de Martino, Alessandro Di Marco, Tiziana di Salvo, Carlo Ferrigno, Vladislav Loktev, Alessio Marino, Mason Ng, Maura Pilia, Juri Poutanen, Tuomo Salmi   +21 more
doaj   +1 more source

THE DISTURBANCE OF A MILLISECOND PULSAR MAGNETOSPHERE [PDF]

, 2016
Pulsar timing has enabled some of the strongest tests of fundamental physics. Central to the technique is the assumption that the detected radio pulses can be used to accurately measure the rotation of the pulsar. Here, we report on a broadband variation
R. Shannon, L. Lentati, M. Kerr, M. Bailes, N. Bhat, W. Coles, S. Dai, J. Dempsey, G. Hobbs, M. Keith, P. Lasky, Y. Levin, R. Manchester, S. Osłowski, V. Ravi, D. Reardon, P. Rosado, R. Spiewak, W. van Straten, L. Toomey, J.-B. Wang, L. Wen, X. You, X.-J. Zhu   +23 more
semanticscholar   +1 more source