output
19962026
most citedMolecular Gas and Star Formation in Nearby Disk Galaxies

681 citations

Showing astro-ph.HEShow all

8 papers · 1 filter

astro-ph.HE2024

A Two-Week Monitoring Campaign on Mrk 421

W. Peter Maksym, Ioannis Liodakis, M. Lynne Saade +153

X-ray polarization is a unique new probe of the particle acceleration in astrophysical jets made possible through the Imaging X-ray Polarimetry Explorer. Here we report on the firs…

astro-ph.HE2024★ 34 cited

Broadband Multi-wavelength Properties of M87 during the 2018 EHT Campaign including a Very High Energy Flaring Episode

J. C. Algaba, M. Balokovic, S. Chandra +738

The nearby elliptical galaxy M87 contains one of the only two supermassive black holes whose emission surrounding the event horizon has been imaged by the Event Horizon Telescope (…

astro-ph.HE2023

Simultaneous mm/X-ray intraday variability in the radio-quiet AGN MCG+08-11-11

P. O. Petrucci, V. Piétu, E. Behar +10

Most of the Active Galactic Nuclei (AGN) are radio-quiet (RQ) and, differently from radio-loud (RL) AGN, do not show signature of large-scale and powerful jets. The physical origin…

astro-ph.HE2017★ 97 cited

Observations of M31 and M33 with the Fermi Large Area Telescope: a galactic center excess in Andromeda?

LAT Collaboration

The Fermi LAT has opened the way for comparative studies of cosmic rays (CRs) and high-energy objects in the Milky Way (MW) and in other, external, star-forming galaxies. Using 2 y…

astro-ph.HE2016★ 166 cited

BlackHoleCam: fundamental physics of the Galactic center

C. Goddi, H. Falcke, M. Kramer +36

Einstein's General Theory of Relativity (GR) successfully describes gravity. The most fundamental predictions of GR are black holes (BHs), but in spite of many convincing BH candid…

astro-ph.HE2013★ 10 cited

GRB 130606A within a sub-DLA at redshift 5.91

A. J. Castro-Tirado, R. Sánchez-Ramírez, S. L. Ellison +38

Events such as GRB130606A at z=5.91, offer an exciting new window into pre-galactic metal enrichment in these very high redshift host galaxies. We study the environment and host ga…

astro-ph.HE2013★ 116 cited

Radio to gamma-ray variability study of blazar S5 0716+714

B. Rani, T. P. Krichbaum, L. Fuhrmann +34

We present the results of a series of radio, optical, X-ray and gamma-ray observations of the BL Lac object S50716+714 carried out between April 2007 and January 2011. The multi-fr…

astro-ph.HE2011★ 4 cited

Location of the Gamma-Ray Flaring Emission in the Parse-Scale Jet of the BL Lac Object AO 0235+164

Ivan Agudo, Alan P. Marscher, Svetlana G. Jorstad +12

We locate the gamma-ray and lower frequency emission in flares of the BL Lac object AO 0235+164 at >12pc in the jet of the source from the central engine. We employ time-dependent…