Results 101 to 110 of about 34,122 (236)

Boosted dark matter versus dark matter-induced neutrinos from single and stacked blazars

Journal of High Energy Physics
The physics responsible for the production of observed high-energy neutrinos have not been established so far, neither for the diffuse astrophysical ones nor for those detected from single blazars.
Andrea Giovanni De Marchi, Alessandro Granelli, Jacopo Nava, Filippo Sala   +3 more
doaj   +1 more source

FSRQ/BL Lac dichotomy as the magnetized advective accretion process around black holes: a unified classification of blazars

, 2019
The $Fermi$ blazar observations show a strong correlation between $\gamma$-ray luminosities and spectral indices. BL Lac objects are less luminous with harder spectra than flat-spectrum radio quasars (FSRQs).
Mondal, Tushar, Mukhopadhyay, Banibrata
core   +1 more source

Constraining the Einstein equivalence principle with multi-wavelength observations of polarized blazars [PDF]

, 2020
Shuang-Xi Yi, Yuan-Chuan Zou, Xuan Yang, Bin Liao, Shao-Wen Wei   +4 more
openalex   +1 more source

Uncovering the physics behind the blazar sequence using a realistic model for jet emission

EPJ Web of Conferences, 2013
Blazar spectra are one of the most important windows into the physical processes occurring along jets. The spectrum, composed from the different emitting regions along the jet, allows us to constrain the physical conditions in the jet.
Potter William J., Cotter Garret
doaj   +1 more source

The blazar's divide and the properties of Fermi blazars

, 2009
8 pages, 8 figures. Invited talk at the meeting: Accretion and ejection in AGN: a global view (Como, June 2009). To be published in Astron. Soc. of the Pacific Conf. Series (ASPCS)
openaire   +2 more sources

Polarization in Blazars [PDF]

Publications of the Astronomical Society of Japan, 2002
Based on the beaming model, a relation between the observed polarization and the Doppler factor was obtained by Fan et al. (1997, AAA068.159.190), who showed that the polarization is associated with the Doppler factor (boosting factor) in BL Lacertae objects (BLs).
openaire   +1 more source

Immune Regulatory Cell Biology and Clinical Applications to Prevent or Treat Acute Graft-Versus-Host Disease

Engineering, 2019
The most common approaches to prevent and treat graft-versus-host disease (GVHD) are intended to deplete or suppress the T cells capable of mediating or supporting alloresponses; however, this renders the recipients functionally T cell deficient and ...
Bruce R. Blazar
doaj   +1 more source

The jet apparent motion and central engine study of Fermi blazars [PDF]

, 2023
H. B. Xiao, Junshi Zhu, J. H. Fan, Zhichao Pei, Z. J. Luo, S. H. Zhang   +5 more
openalex   +1 more source

Investigating Optical Variability of the Blazar S5 0716+714 on Diverse Timescales

The Astrophysical Journal
We present the results of the observational study of the blazar S5 0716+716 in the optical bands B , V , R , and I between 2019 March and 2023 August to investigate its variability on diverse timescales.
Ergün Ege, Aykut Özdönmez, Aditi Agarwal, Tansel Ak   +3 more
doaj   +1 more source

BlazEr1: The eROSITA Blazar Catalog. Blazars and Blazar Candidates in the First eROSITA Survey

Aims. eROSITA on board of the Spectrum Roentgen Gamma (SRG) spacecraft performed its first X-ray all-sky survey (eRASS1) between December 2019 and June 2020. It detected about 930000 sources, providing us with an unprecedented opportunity for a detailed blazar census.
Haemmerich, S., Gokus, A., McBride, F., Weber, P., Marcotulli, L., Zainab, A., Collmar, W., Salvato, M., Wolf, J., Sbarrato, T., Belladitta, S., Buchner, J., Saeedi, S., Dauner, L., Lorenz, M., Koenig, O., Kirsch, C., Berger, K., Bahic, S., Tubin-Arenas, D., Krumpe, M., Homan, D., Markowitz, A., Benke, P., Roesch, F., Kavitha, P. Rajasekar, Tambe, H., Kadler, M., Ros, E., Ojha, R., Wilms, J.   +30 more
openaire   +2 more sources