Studies on slow radio transients

نویسندگان

چکیده

We present a brief overview of very extensive study the group active galactic nuclei (AGNs) that transitioned to radio-loud state over past few decades. The sample consists 12 sources, both quasars and galaxies, showing characteristics gigahertz-peaked spectrum objects undergoing relatively rapid changes, due evolution their newly born radio jets. Discussed also show wide range physical parameters such as bolometric luminosity, black hole mass, jet power, suggesting great diversity among young AGNs hosts. Furthermore, we introduce new observational project, aim which will be investigate gain more in-depth understanding phenomenon slow transients.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Searches for Fast Radio Transients

We discuss optimal detection of fast radio transients from astrophysical objects while taking into account the effects of propagation through intervening ionized media, including dispersion, scattering and scintillation. Our analysis applies to the giant-pulse phenomenon exhibited by some pulsars, for which we show examples, and to radio pulses from other astrophysical sources, such as prompt r...

متن کامل

Radio Frequency Interference and Detection of Fast Radio Transients

Exploring the transient radio sky is one of the major science drivers for several upcoming and planned radio telescopes, including the Square Kilometer Array (SKA). The detection of transient signals, particularly of relatively short durations, can however be considerably hampered by the prevalent and ever growing problem of radio frequency interference (RFI) in radio astronomy. With the goal o...

متن کامل

Bayesian detection of radio transmitter turn-on transients

This paper describes an implementation of Bayesian change point detection for extracting transients captured from radio transmitter transmissions. When a radio transmitter is activated, it goes through a relatively short transient phase during which the signals generated by the unit have characteristics that can be unique. If these turnon transients can be separated, they can be analyzed to ide...

متن کامل

SubmilliJansky Transients in Archival Radio Observations

We report the results of a 944-epoch survey for transient sources with archival data from the Very Large Array spanning 22 years with a typical epoch separation of 7 days. Observations were obtained at 5 or 8.4 GHz for a single field of view with a full-width at half-maximum of 8.6 and 5.1, respectively, and achieved a typical point-source detection threshold at the beam center of ∼< 300 μJy pe...

متن کامل

Physical Interpretations of Rotating Radio Transients

Nearly a dozen of Rotating RAdio Transients (RRATs) have been discovered recently. These objects share similar spin parameters with normal radio pulsars but distinguish themselves from normal pulsars by being quiescent most of the time and only becoming radio bright occasionally. We discuss two possible interpretations to the phenomenon. The first model suggests that these objects are pulsars s...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Astronomische Nachrichten

سال: 2021

ISSN: ['0004-6337', '1521-3994']

DOI: https://doi.org/10.1002/asna.20210046