Results 91 to 100 of about 1,170,090 (200)

Long‐term impacts of primary school scholarships: Evidence from Cambodia

Journal of Policy Analysis and Management, Volume 43, Issue 1, Page 10-38, Winter 2024.
ABSTRACT This randomized trial investigates the long‐term effects of a primary school scholarship program in rural Cambodia. We estimate impacts—9 years after program inception—on educational attainment, cognitive skills, socio‐emotional outcomes, labor market outcomes, and well‐being.
Felipe Barrera‐Osorio, Andreas de Barros, Deon Filmer   +2 more
wiley   +1 more source

The VHE γ-Ray View of the FSRQ PKS 1510-089

Galaxies, 2019
The flat spectrum radio quasar PKS 1510-089 is a monitored target in many wavelength bands due to its high variability. It was detected as a very-high-energy (VHE) γ-ray emitter with H.E.S.S.
Michael Zacharias, Dijana Dominis Prester, Felix Jankowsky, Elina Lindfors, Manuel Meyer, Mahmoud Mohamed, Heike Prokoph, David Sanchez, Julian Sitarek, Tomislav Terzic, Stefan Wagner, Alicja Wierzcholska, on behalf of the H.E.S.S. and MAGIC Collaborations   +12 more
doaj   +1 more source

Interview with Bruce Blazar

, 2015
Bruce Blazar received a BS in Biology at Rensselaer Polytechnic Institute in Troy, New York, and an MD degree at Albany Medical College in Albany, New York in 1978. He completed a residency in pediatrics (1981) and a fellowship in hematology/oncology and
Blazar, Bruce, Tobbell, Dominique
core  

An Overview of Blazar Variability

, 1996
12 pages, 6 figures, description, uses paspconf macro (latex file with encapsulated postscript). Invited review talk at the Miami meeting on Blazar Variability (February 1996).
openaire   +2 more sources

The dual nature of blazar fast variability. Space and ground observations of S5 0716+714 [PDF]

, 2020
Blazar S5 0716+714 is well-known for its short-term variability, down to intra-day time-scales. We here present the 2-min cadence optical light curve obtained by the TESS space telescope in 2019 December - 2020 January and analyse the object fast ...
Kimeridze, G N, Bonnoli, G, M G Nikolashvili, Vasilyev, A A, Lin, C S, Nakamura, M, A Di Maggio, M I Carnerero, Semkov, E, V M Larionov, Rizzi, N, W-P Chen, A C Gupta, J M Lopez, Tsai, A L, J Otero-Santos, A L Tsai, BALMAVERDE, Barbara, L Stiaccini, Okhmat, D N, Pursimo, T, B Balmaverde, V Dhiman, J A Acosta-Pulido, G V Baida, A A Nikiforova, T Sakamoto, D'AMMANDO, FILIPPO, Nikolashvili, M G, Sigua, L A, Borman, G A, M Villata, M Nakamura, CARNERERO MARTIN, Maria Isabel, Sakamoto, T, Di Maggio, A, D N Okhmat, Matsumoto, K, T Pursimo, A Marchini, Mirzaqulov, D O, Mujica, R, S A Ehgamberdiev, Carosati, D, Zhovtan, A V, L A Sigua, S O Kurtanidze, Hiriart, D, D Carosati, Chen, W-P, Dhiman, V, Ehgamberdiev, S A, Marchini, A, N Rizzi, D Hiriart, G A Borman, R Mujica, VILLATA, Massimo, Lopez, J M, G N Kimeridze, K Matsumoto, G Bonnoli, Nikiforova, A A, Stiaccini, L, O M Kurtanidze, A A Vasilyev, I S Troitsky, Benítez, E, Kurtanidze, S O, Otero-Santos, J, F D’Ammando, Baida, G V, Kurtanidze, O M, E Semkov, D O Mirzaqulov, Acosta-Pulido, J A, C M Raiteri, RAITERI, Claudia Maria, Larionov, V M, E Benítez, C S Lin, Gupta, A C, A V Zhovtan, Troitsky, I S   +83 more
core   +1 more source

Correlated Variability in Blazars

, 2008
Blazars are thought to emit highly-collimated outflows, so-called jets. By their close alignment to our line of sight, relativistic beaming effects enable us to observe these jets over the whole electromagnetic spectrum up to TeV energies, making them ideal laboratories for studying jet physics. In the last years multiwavelength observations of blazars
openaire   +2 more sources

Blazar Optical Polarimetry: Current Progress in Observations and Theories

Galaxies, 2019
Polarimetry has been a standard tool to probe the active galactic nucleus (AGN) jet magnetic field. In recent years, several optical polarization monitoring programs have been carried out, bringing in many exciting new results and insights into jet ...
Haocheng Zhang
doaj   +1 more source

Detection of Periodic Radio Signal from the Blazar J1043+2408

Galaxies, 2018
The search for periodic signals from blazars has become a widely discussed topic in recent years. In the scenario that such periodic changes originate from the innermost regions of blazars, the signals bear imprints of the processes occurring near the ...
Gopal Bhatta
doaj   +1 more source

Role of Magnetic Reconnection in Blazar Variability Using Numerical Simulation

The Astrophysical Journal
Fast γ -ray variability in blazars remains a central puzzle in high-energy astrophysics, challenging standard shock acceleration models. Blazars, a subclass of active galactic nuclei with jets pointed close to our line of sight, offer a unique view into ...
Chandan Kumar Das, Bhargav Vaidya, Amit Shukla, Giancarlo Mattia, Karl Mannheim   +4 more
doaj   +1 more source

PKS 2155-304: A Case Study of Blazar Variability Power Spectrum at the Highest Energies and on the Longest Timescales

Galaxies, 2019
We present the results of our Power Spectral Density (PSD) analysis for the BL Lac object PKS 2155−304, utilizing the nightly-binned long-term light curve from the decade-long monitoring, as well as the minute-binned intra-night light curve from ...
Arti Goyal
doaj   +1 more source