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相关论文: Decameter Type III-Like Bursts

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A transient (LPA J0108+13) with repeated bursts was detected on the Large Phased Array (LPA) radio telescope at a central frequency of 110.4 MHz in the direction of the radio galaxy 3C 33. The flux density of bursts ranges from tens to…

高能天体物理现象 · 物理学 2026-01-21 A. M. Anpilogov , S. A. Tyul'bashev

We interpret recent observations of high-to-low frequency drifting features in the spectra of the repeating FRBs as evidence of sharply changing plasma properties in the emission region, presumably the neutron stars magnetospheres. The…

高能天体物理现象 · 物理学 2019-08-21 Maxim Lyutikov

Aims: Our aim is to explore the broad-band radio continuum spectrum of LSI+61303 during its outbursts by employing the available set of secondary focus receivers of the Effelsberg 100 m telescope. Methods: The clear periodicity of the…

高能天体物理现象 · 物理学 2015-07-22 L. Zimmermann , L. Fuhrmann , M. Massi

We discuss flaring variability of radio emission of microquasars, measured in monitoring programs with the RATAN-600 radio telescope. We carried out a multi-frequency (1-30 GHz) daily monitoring of the radio flux variability of the…

天体物理学 · 物理学 2009-11-13 Sergei A. Trushkin , Nikolaj N. Bursov , Nikolaj A. Nizhelskij

We report about the multi-frequency (1-30 GHz) daily monitoring of the radio flux variability of the three microquasars: SS433, GRS1915+105 and Cyg X-3 during the period from September 2005 to May 2006. 1. We detected clear correlation of…

天体物理学 · 物理学 2007-05-23 S. A. Trushkin , N. N. Bursov , T. Kotani , N. A. Nizhelskij , M. Namiki , M. Tsuboi , P. A. Voitsik

The first appearance of radio type II burst emission at decameter-hectometer (DH) waves typically occurs in connection, and often simultaneously, with other types of radio emissions. As type II bursts are signatures of propagating shock…

太阳与恒星天体物理 · 物理学 2021-05-18 Silja Pohjolainen , Nasrin Talebpour Sheshvan

We present meter wave solar radio spectra of the highest spectrotemporal resolution achieved to date. The observations, obtained with the first station of the Long Wavelength Array (LWA1), show unprecedented detail of solar emissions across…

太阳与恒星天体物理 · 物理学 2015-11-04 Samuel Tun Beltran , Sean Cutchin , Stephen White

Fast radio bursts remain one of the most enigmatic astrophysical sources. Observations have significantly progressed over the last few years, thanks to the capabilities of new radio telescopes and the refurbishment of existing ones. Here we…

GCRT J1745-3009 is a transient bursting radio source located in the direction of the Galactic center, discovered in 330 MHz VLA observations from 2002 September 30--October 1 by Hyman et al. We have searched for bursting activity from GCRT…

天体物理学 · 物理学 2009-11-13 Scott D. Hyman , T. Joseph W. Lazio , Subhashis Roy , Paul S. Ray , Namir E. Kassim

We report the discovery of burst oscillations at the spin frequency in ten thermonuclear bursts from the accreting millisecond X-ray pulsar (AMXP) IGR J17511-3057. The burst oscillation properties are, like those from the persistent AMXPs…

高能天体物理现象 · 物理学 2015-05-19 D. Altamirano , A. Watts , M. Linares , C. B. Markwardt , T. Strohmayer , A. Patruno

The results of a search for individual fast radio bursts with the Large Phased Array of the Lebedev Physical Institute at 111 MHz during July 2012 through August 2018 are presented. The signals were distinguished by convolving the data with…

天体物理仪器与方法 · 物理学 2019-12-03 V. A. Fedorova , A. E. Rodin

We report observations of type III radio bursts at decimeter wavelengths (type IIIdm bursts) -- signatures of suprathermal electron beams propagating in the low corona -- using the new technique of radio dynamic imaging spectroscopy…

太阳与恒星天体物理 · 物理学 2015-06-12 Bin Chen , Timothy S. Bastian , Stephen M. White , Dale E. Gary , Richard A. Perley , Michael P. Rupen , Brent R. Carlson

Fast Radio Bursts are millisecond bursts of radio radiation at frequencies of about 1 GHz, recently discovered in pulsar surveys. They have not yet been definitively identified with any other astronomical object or phenomenon. The bursts…

高能天体物理现象 · 物理学 2016-05-10 J. I. Katz

We report the results of (a) extensive follow-up observations of the gamma-ray pulsar J1732-3131 that has been recently detected at decameter wavelengths, and (b) deep searches for counterparts of 9 other radio-quiet gamma-ray pulsars at 34…

高能天体物理现象 · 物理学 2015-06-22 Yogesh Maan , H. A. Aswathappa

High-redshift ($z >3$) $\gamma$-ray blazars are rare, but they are crucial for our understanding of jet evolution, $\gamma$-ray production and propagation, and the growth of supermassive black holes in the early universe. A new analysis of…

高能天体物理现象 · 物理学 2024-06-07 Hai Lei , Ying-Kang Zhang , Xiong Jiang , Sebastian Kiehlmann , Anthony C. S. Readhead , Liang Chen , Neng-Hui Liao , Tao An

Tidal Disruption Events (TDEs) release enormous amounts of energy, offering a promising avenue for detecting Population III (Pop III) stars. However, the radiative properties of TDEs of Pop III stars have so far been studied only…

高能天体物理现象 · 物理学 2026-03-13 Yu-Heng Sheng , De-Fu Bu , Liang Chen , Shi-Yin Shen , Bo-Yan Chen , Xiao-Hong Yang

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…

高能天体物理现象 · 物理学 2022-07-20 V. A. Samodurov , S. A. Tyul'bashev , M. O. Toropov , S. V. Logvinenko

This study investigates polarimetric characteristics of the blazar 3C~454.3 at 22-129~GHz using decadal~(2011-2022) data sets. In addition, we also delve into the origin of the polarization flare observed in 2019. The data sets were…