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Rotating radio transients (RRATs) represent a significant but poorly understood component of the Galactic neutron star population, characterized by sporadic emission first detectable only through single-pulse searches. We present the…

High Energy Astrophysical Phenomena · Physics 2026-05-04 Devansh Agarwal , Evan F. Lewis , Duncan R. Lorimer , Maura A. McLaughlin , Bingyi Cui , Anna Turner , Natasha McMann

Two new rotating transients were detected in the 2020 observations carried out on the LPA LPI radio telescope. The dispersion measures of the found transients are DM=21 and 35 pc/cm^3, the pulse half-widths are We=18 and 35 ms for J1550+09…

High Energy Astrophysical Phenomena · Physics 2022-06-27 S. V. Logvinenko , S. A. Tyul'bashev , V. M. Malofeev

We present a polarization analysis of PSR J0941$-$39 and PSR J1107$-$5907, which exhibit transitions between being pulsars and rotating radio transients (RRATs), using the ultra-wide bandwidth low-frequency (UWL) receiver on Murriyang, the…

High Energy Astrophysical Phenomena · Physics 2023-11-10 S. N. Sun , N. Wang , W. M. Yan , S. Q. Wang , J. T. Xie

Several conjectures have been put forward to explain the RRATs, the newest subclass of neutron stars, and their connections to other radio pulsars. This work discusses these conjectures in the context of the characteristic properties of the…

High Energy Astrophysical Phenomena · Physics 2022-10-14 Abhishek , Namrata Malusare , Tanushree N , Gayathri Hegde , Sushan Konar

We present an analysis of the emission behaviour of PSR J1107-5907, a source known to exhibit separate modes of emission, using observations obtained over approximately 10 yr. We find that the object exhibits two distinct modes of emission;…

High Energy Astrophysical Phenomena · Physics 2015-06-19 N. J. Young , P. Weltevrede , B. W. Stappers , A. G. Lyne , M. Kramer

Radio searches for single pulses provide the opportunity to discover one-off events, fast transients and some pulsars that might otherwise be missed by conventional periodicity searches. The MeerTRAP real-time search pipeline operates…

We present the longest-term timing study so far of three Rotating Radio Transients (RRATs) - J1819-1458, J1840-1419 and J1913+1330 - performed using the Lovell, Parkes and Green Bank telescopes over the past decade. We study long-term and…

High Energy Astrophysical Phenomena · Physics 2018-04-25 B. Bhattacharyya , A. G. Lyne , B. W. Stappers , P. Weltevrede , E. F. Keane , M. A. McLaughlin , M. Kramer , C. Jordan , C. Bassa

We report on the first near-infrared observations obtained for Rotating RAdio Transients (RRATs). Using adaptive optics devices mounted on the ESO Very Large Telescope (VLT), we observed two objects of this class: RRAT J1819-1458, and RRAT…

Astrophysics of Galaxies · Physics 2015-05-18 N. Rea , G. Lo Curto , V. Testa , G. L. Israel , A. Possenti , M. McLaughlin , F. Camilo , B. M. Gaensler , M. Burgay

Recently several long-period radio transients have been discovered, with strongly polarised coherent radio pulses appearing on timescales between tens to thousands of seconds [1,2]. In some cases the radio pulses have been interpreted as…

Anomalous X-ray pulsars (AXPs) are slowly rotating neutron stars with very bright and highly variable X-ray emission that are believed to be powered by ultra-strong magnetic fields of >1e14 G, according to the 'magnetar' model. The radio…

Pulsars are rapidly rotating neutron stars that emit pulses of radiation at regular intervals, typically ranging from milliseconds to seconds. The precise recording and modelling of the arrival times of pulsar emission is known as timing…

High Energy Astrophysical Phenomena · Physics 2025-12-03 Thulo Letsele , Mechiel Christiaan Bezuidenhout , the MeerTRAP collaboration

The high-frequency radio sky is bursting with synchrotron transients from massive stellar explosions and accretion events, but the low-frequency radio sky has so far been quiet beyond the Galactic pulsar population and the long-term…

High Energy Astrophysical Phenomena · Physics 2025-03-12 N. Hurley-Walker , X. Zhang , A. Bahramian , S. J. McSweeney , T. N. O'Doherty , P. J. Hancock , J. S. Morgan , G. E. Anderson , G. H. Heald , T. J. Galvin

We undertake the first targeted search at 1.5 GHz for radio emission from the variable $\gamma$-ray pulsar PSR J2021$+$4026. This radio-quiet pulsar assumes one of two stable $\gamma$-ray emission states, between which it transitions on a…

High Energy Astrophysical Phenomena · Physics 2023-05-24 B. Shaw , B. W. Stappers , P. Weltevrede , C. A. Jordan , M. B. Mickaliger , A. G. Lyne

A search for pulsed radiation at a frequency of 111 MHz in the direction of 116 RRAT candidates was carried out. For the search, archival data obtained on a meridian 128-beam radio telescope, a Large Phased Array (LPA), was used. For each…

High Energy Astrophysical Phenomena · Physics 2024-01-11 S. A. Tyul'bashev , M. A. Kitaeva , E. A. Brylyakova , V. S. Tyul'bashev , G. E. Tyul'basheva

We report on the discovery of extended X-ray emission around the high magnetic field Rotating Radio Transient J1819-1458. Using a 30ks Chandra ACIS-S observation, we found significant evidence for extended X-ray emission with a peculiar…

High Energy Astrophysical Phenomena · Physics 2009-09-28 N. Rea , M. A. McLaughlin , B. M. Gaensler , P. O. Slane , L. Stella , S. P. Reynolds , M. Burgay , G. L. Israel , A. Possenti , S. Chatterjee

Recent findings suggest a universal relationship between the quasi-periodic sub-structures and rotational periods across various types of radio-emitting neutron stars. In this study, we report the detection of 12 quasi-periodic…

High Energy Astrophysical Phenomena · Physics 2025-04-08 Zhenfan Tang , Songbo Zhang , Jieshuang Wang , Xuan Yang , Xuefeng Wu

Super-sensitive observations of bright pulsars by the Five-hundred-meter Aperture Spherical radio Telescope (FAST) have revealed weak radio emission continuously emerged in the rotation phases between the main pulse and interpulse of an…

High Energy Astrophysical Phenomena · Physics 2025-04-10 P. F. Wang , J. L. Han

During the last few years there were discovered and deeply examined several transient neutron stars (Rotating Radio Transients). It is already well accepted that these objects are rotating neutron stars. But their extraordinary features…

Astrophysics · Physics 2007-09-14 D. Lomiashvili , G. Machabeli , I. Malov

Rotating radio transients (RRATs) are sporadically emitting pulsars detectable only through searches for single pulses. While over 100 RRATs have been detected, only a small fraction (roughly 20\%) have phase-connected timing solutions,…

Instrumentation and Methods for Astrophysics · Physics 2017-12-13 Min Jiang , Bingyi Cui , Natalia Schmid , Maura McLaughlin , Zhicheng Cao

We present the first polarization measurements of the radio emission from RRAT J1819$-$1458. Our observations, conducted in parallel to regular timing sessions, have yielded a small number of bright and polarized pulses. The polarization…

Solar and Stellar Astrophysics · Physics 2009-05-11 A. Karastergiou , A. W Hotan , W. van Straten , M. A McLaughlin , S. M Ord