activity
20162026
most citedTeraelectronvolt emission from the -ray burst GRB 190114C

286 citations · 3k across the 102 of their papers we have counts for

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Showing 2024Show all

8 papers · 1 filter

astro-ph.HE2024

An Intermediate Mass Black Hole Hidden Behind Thick Obscuration

Peter G. Boorman, Daniel Stern, Roberto J. Assef +12

Recent models suggest approximately half of all accreting supermassive black holes (SMBHs; 10 M) are expected to undergo intense growth phase…

astro-ph.HE2024★ 3 cited

A Multi-Wavelength Characterization of the Obscuring Medium at the Center of NGC 6300

D. Sengupta, N. Torres-Albà, A. Pizzetti +9

Most of the super-massive black holes in the Universe accrete material in an obscured phase. While it is commonly accepted that the "dusty torus" is responsible for the nuclear obs…

astro-ph.GA2024

An X-ray Significantly Variable, Luminous, Type 2 Quasar at z = 2.99 with a Massive Host Galaxy

Xiurui Zhao, Stefano Marchesi, Marco Ajello +8

We present a comprehensive X-ray analysis and spectral energy distribution (SED) fitting of WISEA J171419.96+602724.6, an extremely luminous type 2 quasar at = 2.99. The source…

astro-ph.HE2024

Discovering High- BL Lacs Using Swift/UVOT and SARA Observations with the Dropout Technique

Y. Sheng, K. Imam, A. Kaur +14

Measuring spectroscopic redshifts for BL Lacertae (BL Lac) objects, a class of blazar, is challenging because their optical spectrum lacks, or has weak, emission lines ( equivalent…

astro-ph.GA2024

Stripe 82-XL: the 54.8 deg and 18.8 Ms Chandra and XMM-Newton point source catalog and number of counts

Alessandro Peca, Nico Cappelluti, Stephanie LaMassa +9

We present an enhanced version of the publicly-available Stripe 82X catalog (S82-XL), featuring a comprehensive set of 22,737 unique X-ray point sources identified with a significa…

astro-ph.HE2024

Hydrogen Column Density Variability in a Sample of Local Compton-Thin AGN II

A. Pizzetti, N. Torres-Alba, S. Marchesi +7

We present the multi-epoch analysis of 13 variable, nearby (z<0.1), Compton-thin (22<logN_H<24) active galactic nuclei (AGN) selected from the 105-month BAT catalog. Analyzing all…

astro-ph.HE2024

Multiwavelength Variability Analysis of Fermi-LAT Blazars

P. Peñil, J. Otero-Santos, M. Ajello +6

Blazars present highly variable -ray emission. This variability, which can range from a few minutes to several years, is also observed at other wavelengths across the entire ele…

astro-ph.HE2024

Historical Fermi All-Sky Variability Analysis of Galactic Flares

Scott D. Joffre, Núria Torres-Albà, Marco Ajello +2

The Fermi All-sky Variability Analysis (FAVA) provides a photometric alternative for identifying week-long gamma-ray flares across the entire sky while being independent of any dif…