178 citations · 690 across the 24 of their papers we have counts for
20 papers · 1 filter
The first MeerKAT S-band globular cluster pulsar survey
Rouhin Nag, Marta Burgay, Alessandro Ridolfi +19
Globular clusters are efficient factories of recycled pulsars, but searches toward high-dispersion-measure (DM) clusters can be strongly limited near 1 GHz by dispersive smearing a…
Exploring the optical properties of redback pulsars: The case of J1717+4308A in the globular cluster M92
Jianxing Chen, Greta Ettorre, Cristina Pallanca +13
Binary millisecond pulsars (MSPs) in globular clusters (GCs) are key for binary and stellar evolution studies under extreme conditions. The identification of their optical companio…
A pulsar escaping an ancient open cluster via tidal stripping
Lei Zhang, Xiaoting Fu, Di Li +21
Open clusters are the primary birthplaces of stars in the Milky Way disk, yet their neutron star progeny are rarely found within them, presumably due to supernova-induced kicks tha…
A joint MeerKAT and Parkes view of Omega Centauri: New TRAPUM Searches and Pulsar Timing
Miquel Colom i Bernadich, Shi Dai, Federico Abbate +27
Millisecond pulsars (MSPs) are powerful probes of globular clusters (GCs), tracing stellar evolution, cluster dynamics, and the local gravitational potential. We investigate the MS…
Discovery of a millisecond pulsar with a CO white dwarf companion
Jie Zhang, Zerui Wang, Lei Zhang +13
We report the discovery and characterization of PSR J1810-0623, a fully recycled millisecond pulsar with a spin period of 4.55 ms, discovered with the Five-hundred-meter Aperture S…
Pulsed radio emission from a Central Compact Object
Lei Zhang, Alessandro Ridolfi, Di Li +7
Located at the centres of supernova remnants, central compact objects (CCOs) are among the most puzzling neutron stars. CCOs are bright in thermal X-rays, yet have evaded detection…
Probing Globular Cluster with MeerKAT and FAST: A Pulsar Polarization Census
Lei Zhang, Federico Abbate, Di Li +13
Only one globular cluster (GC), 47 Tuc, has been found to contain intracluster medium, with an electron density 100 times higher than that of the ISM in its vicinity. The character…
Reconstruction of spider system's observables from orbital period modulations via the Applegate mechanism
Vittorio De Falco, Amodio Carleo, Alessandro Ridolfi +1
Redback and black widow pulsars are two classes of peculiar binary systems characterized by very short orbital periods, very low mass companions, and, in several cases, regular ecl…
PSR J12276208 and its massive white dwarf companion: pulsar emission analysis, timing update and mass measurements
Miquel Colom i Bernadich, Vivek Venkatraman Krishnan, David J. Champion +6
PSR J12276208 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…
A pulsar in a binary with a compact object in the mass gap between neutron stars and black holes
Ewan D. Barr, Arunima Dutta, Paulo C. C. Freire +22
Among the compact objects observed in gravitational wave merger events a few have masses in the gap between the most massive neutron stars (NSs) and least massive black holes (BHs)…
Discovery and Timing of Millisecond Pulsars in the Globular Cluster M5 (NGC 5904) with FAST and Arecibo
Lei Zhang, Paulo C. C. Freire, Alessandro Ridolfi +29
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…
Discovery of radio eclipses from 4FGL J1646.54406: a new candidate redback pulsar binary
Andrew Zic, Ziteng Wang, Emil Lenc +9
Large widefield surveys make possible the serendipitous discovery of rare sub-classes of pulsars. One such class are "spider"-type pulsar binaries, comprised of a pulsar in a compa…
A MeerKAT view of the pulsars in the globular cluster NGC 6522
F. Abbate, A. Ridolfi, P. C. C. Freire +11
We present the results of observations aimed at discovering and studying pulsars in the core-collapsed globular cluster (GC) NGC 6522 performed by the MeerTIME and TRAPUM Large Sur…
Giant pulses from J1823-3021A observed with the MeerKAT telescope
F. Abbate, M. Bailes, S. J. Buchner +11
The millisecond pulsar J1823-3021A is a very active giant pulse emitter in the globular cluster NGC 6624. New observations with the MeerKAT radio telescope have revealed 14350 gian…
Radio pulsations from the -ray millisecond pulsar PSR J2039-5617
A. Corongiu, R. P. Mignani, A. S. Seyffert +9
The predicted nature of the candidate redback pulsar 3FGL\,J2039.65618 was recently confirmed by the discovery of -ray millisecond pulsations (Clark et al. 2020, hereafter Pa…
A very young radio-loud magnetar
P. Esposito, N. Rea, A. Borghese +20
The magnetar Swift ,J1818.0-1607 was discovered in March 2020 when Swift detected a 9 ms hard X-ray burst and a long-lived outburst. Prompt X-ray observations revealed a spin perio…
The Thousand-Pulsar-Array programme on MeerKAT I: Science objectives and first results
Simon Johnston, A. Karastergiou, M. J. Keith +24
We report here on initial results from the Thousand Pulsar Array (TPA) programme, part of the Large Survey Project "MeerTime" on the MeerKAT telescope. The interferometer is used i…
Internal gas models and central black hole in 47 Tucanae using millisecond pulsars
F. Abbate, A. Possenti, A. Ridolfi +4
Despite considerations of mass loss from stellar evolution suggesting otherwise, the content of gas in globular clusters seems poor and hence its measurement very elusive. One way…
PSR J17552550: A young radio pulsar with a massive, compact companion
C. Ng, M. U. Kruckow, T. M. Tauris +9
Radio pulsars found in binary systems with short orbital periods are usually fast spinning as a consequence of recycling via mass transfer from their companion stars; this process…
Long-term observations of pulsars in the globular clusters 47 Tucanae and M15
A. Ridolfi, P. C. C. Freire, M. Kramer +15
Multi-decade observing campaigns of the globular clusters 47 Tucanae and M15 have led to an outstanding number of discoveries. Here, we report on the latest results of the long-ter…