Zobrazeno 1 - 10
of 147
pro vyhledávání: '"Paliya, Vaidehi S."'
Autor:
Paliya, Vaidehi S., Saikia, D. J.
The astrophysical $\gamma$-ray photons carry the signatures of the violent phenomena happening on various astronomical scales in our Universe. This includes supernova remnants, pulsars, and pulsar wind nebulae in the Galactic environment and extragal
Externí odkaz:
http://arxiv.org/abs/2405.04898
Autor:
Paliya, Vaidehi S.
Understanding the high-energy emission processes and variability patterns are two of the most challenging research problems associated with relativistic jets. In particular, the long-term (months-to-years) flux variability at very high energies (VHE,
Externí odkaz:
http://arxiv.org/abs/2401.11762
Narrow-line Seyfert 1 (NLSy1) galaxies are an enigmatic class of active galactic nuclei (AGN) that exhibit peculiar multiwavelength properties across the electromagnetic spectrum. For example, these sources have allowed us to explore the innermost re
Externí odkaz:
http://arxiv.org/abs/2311.13818
The long term broadband spectral study of Flat Spectrum Radio Quasars during different flux states has the potential to infer the emission mechanisms and the cause of spectral variations. To scrutinize this, we performed a detailed broadband spectral
Externí odkaz:
http://arxiv.org/abs/2310.06819
The latest entry in the jetted active galactic nuclei (AGN) family is the Fanaroff-Riley type 0 (FR0) radio galaxies. They share several observational characteristics, e.g., nuclear emission and host galaxy morphology, with FR I sources; however, the
Externí odkaz:
http://arxiv.org/abs/2310.03321
Autor:
Nandi, Payel, Stalin, C. S., Saikia, D. J., Riffel, Rogemar A., Manna, Arijit, Pal, Sabyasachi, Dors, O. L., Wylezalek, Dominika, Paliya, Vaidehi S., Saikia, P., Dabhade, Pratik, Patig, Markus-Kissler, Sagar, Ram
Black hole driven outflows in galaxies hosting active galactic nuclei (AGN) may interact with their interstellar medium (ISM) affecting star formation. Such feedback processes, reminiscent of those seen in massive galaxies, have been reported recentl
Externí odkaz:
http://arxiv.org/abs/2307.13263
Autor:
Rodrigues, Xavier, Paliya, Vaidehi S., Garrappa, Simone, Omeliukh, Anastasiia, Franckowiak, Anna, Winter, Walter
Publikováno v:
Astron. Astrophys. 681, A119 (2024)
The origin of the diffuse astrophysical neutrino flux observed by the IceCube experiment is still under debate. In recent years there have been associations of neutrino events with individual blazars, which are active galaxies with relativistic jets
Externí odkaz:
http://arxiv.org/abs/2307.13024
The orientation of the jet axis to the line of sight of the observer plays a major role in explaining the phenomena observed from blazars and radio galaxies. In the gamma-ray band, only a handful of radio galaxies have been identified, all being loca
Externí odkaz:
http://arxiv.org/abs/2212.08789
Autor:
Finke, Justin D., Ajello, Marco, Dominguez, Alberto, Desai, Abhishek, Hartmann, Dieter H., Paliya, Vaidehi S., Saldana-Lopez, Alberto
We present an updated model for the extragalactic background light (EBL) from stars and dust, over wavelengths approximately 0.1 to 1000 $\mu$m. This model uses accurate theoretical stellar spectra, and tracks the evolution of star formation, stellar
Externí odkaz:
http://arxiv.org/abs/2210.01157
Autor:
Olmo-GarcÍa, Amanda, Paliya, Vaidehi S., Crespo, Nuria Álvarez, Kumar, Brajesh, Domínguez, Alberto, de Paz, Armando Gil, Sánchez-Blázquez, Patricia
The classification of gamma-ray-detected blazar candidates of uncertain type (BCU) is a relevant problem in extragalactic gamma-ray astronomy. Here we report the optical spectroscopic characterization, using two 3-4~m class telescopes, Telescopio Naz
Externí odkaz:
http://arxiv.org/abs/2209.06518