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Extended periods of radio pulsations have been observed for six magnetars, displaying characteristics different from those of ordinary pulsars. In this Letter, we argue that radio emission is generated in a closed, twisted magnetic flux…

High Energy Astrophysical Phenomena · Physics 2025-12-18 Shuzhe Zeng , Alexander Philippov , James Juno , Andrei M. Beloborodov , Elena Popova

Coherent radio bursts detected from M dwarfs have some analogy with solar radio bursts, but reach orders of magnitude higher luminosities. These events trace particle acceleration, powered by magnetic reconnection, shock fronts (such as…

Solar and Stellar Astrophysics · Physics 2019-02-13 Jackie Villadsen , Gregg Hallinan

Rotating Radio Transients (RRATs) are a class of pulsars characterized by sporadic bursts of radio emission, which make them difficult to detect in typical periodicity-based pulsar searches. Using newly developed post-processing techniques…

High Energy Astrophysical Phenomena · Physics 2015-06-12 Chen Karako-Argaman , the GBT Drift-scan Collaboration

Long-period radio transients (LPTs) are a new class of radio sources characterized by long spin periods ($P_{\text{spin}}>10^3$ s) and highly variable radio emission. While known magnetars are relatively young ($\tau<10^5$ yrs) with spin…

High Energy Astrophysical Phenomena · Physics 2026-03-25 Jon Kwong , Kaya Mori

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

We report the discovery of PSR~J2251$-$3711, a radio pulsar with a spin period of 12.1 seconds, the second longest currently known. Its timing parameters imply a characteristic age of 15 Myr, a surface magnetic field of $1.3 \times…

The survey of northern hemisphere were made at a frequency of 111 MHz. The total accumulation time at each point of the sky was at least one hour. 75 sources of pulse emission were detected. More then 80% of these sources are known pulsars…

High Energy Astrophysical Phenomena · Physics 2022-04-12 S. A. Tyul'bashev , M. A. Kitaeva , S. V. Logvinenko , G. E. Tyul'basheva

The recurrent fast radio burst FRB 180916 was recently shown to exhibit a 16 day period (with possible aliasing) in its bursting activity. Given magnetars as widely considered FRB sources, this period has been attributed to precession of…

High Energy Astrophysical Phenomena · Physics 2020-07-01 Paz Beniamini , Zorawar Wadiasingh , Brian D. Metzger

We present the first simultaneous, multi-wavelength observations of an L dwarf, the L3.5 candidate brown dwarf 2MASS J00361617+1821104, conducted with the Very Large Array, the Chandra X-ray Observatory, and the Kitt Peak 4-m telescope. We…

A search for pulse signals was carried out in a new sky area included in the monitoring program for the search for pulsars and transients. Processing of several months data recorded in six frequency channels with a total bandwidth of 2.5…

High Energy Astrophysical Phenomena · Physics 2022-07-20 V. A. Samodurov , S. A. Tyul'bashev , M. O. Toropov , S. V. Logvinenko

Several classes of neutron star are sources of coherent emission at frequencies of 10^2 - 10^3 MHz: others are radio-quiet. The primary emission spectra are broadly universal in form over many orders of magnitude in rotation period and…

High Energy Astrophysical Phenomena · Physics 2015-06-24 P. B. Jones

The timing properties of the millisecond pulsar PSR J1939+2134 -- very high rotation frequency, very low time derivative of rotation frequency, no timing glitches and relatively low timing noise -- are responsible for its exceptional timing…

High Energy Astrophysical Phenomena · Physics 2020-08-10 M. Vivekanand

Long-period transients (LPTs) are a newly identified class of radio sources with burst recurrence times from minutes to hours, and their diversity suggests multiple physical origins. CHIME/ILT J1634+44, with a short period of 841 s, a…

High Energy Astrophysical Phenomena · Physics 2026-04-14 Yejing Zhan , Di Wang , Fa-Yin Wang

Millisecond radio pulsars are neutron stars that have been spun-up by the transfer of angular momentum during the low-mass X-ray binary phase. The transition from an accretion-powered to a rotation-powered pulsar takes place on evolutionary…

Astrophysics · Physics 2009-11-10 S. Campana , P. D'Avanzo , J. Casares , S. Covino , G. L. Israel , G. Marconi , Rob Hynes , P. Charles , L. Stella

Rotating Radio Transients (RRATs) are a subclass of pulsars first identified in 2006 that are detected only in searches for single pulses and not through their time averaged emission. Here, we present the results of observations of 19 RRATs…

High Energy Astrophysical Phenomena · Physics 2016-11-09 G. B. Taylor , K. Stovall , M. McCrackan , M. A. McLaughlin , R. Miller , C. Karako-Argaman , J. Dowell , F. K. Schinzel

Recent measurements showed that the period derivative of the 'high-B' radio pulsar PSR J1734-3333 is increasing with time. For neutron stars evolving with fallback disks, this rotational behavior is expected in certain phases of the…

High Energy Astrophysical Phenomena · Physics 2015-06-12 S. Caliskan , U. Ertan , M. A. Alpar , J. E. Truemper , N. D. Kylafis

Rotating radio transients (RRATs) are peculiar astronomical objects whose emission mechanism remains under investigation. In this paper, we present observations of three RRATs, J1538+2345, J1854+0306 and J1913+1330, observed with the…

High Energy Astrophysical Phenomena · Physics 2019-03-18 Jiguang Lu , Bo Peng , Kuo Liu , Peng Jiang , Youling Yue , Meng Yu , Ye-Zhao Yu , Feifei Kou , Lin Wang , FAST Collaboration

We present the timing parameters of nine pulsars discovered in a survey of intermediate Galactic latitudes at 1400 MHz with the Parkes radio telescope. Eight of these pulsars possess small pulse periods and period derivatives thought to be…

Astrophysics · Physics 2009-11-06 R. T. Edwards , M. Bailes

Rotating radio transients (RRATs) are a sub-class of pulsars characterized by sporadic emission and thus can generally only be studied by analysis of their single-pulses. Here we present a single-pulse analysis using 11 years of timing data…

High Energy Astrophysical Phenomena · Physics 2018-10-26 Brent Shapiro-Albert , Maura McLaughlin , Evan Keane