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- AGH University of KrakowPL999 papers
- Centre National de la Recherche ScientifiqueFR939 papers
- Institute of Nuclear Physics, Polish Academy of SciencesPL824 papers
- European Organization for Nuclear ResearchCH800 papers
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiIT778 papers
- Heidelberg UniversityDE774 papers
- Université Paris-SaclayFR765 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di BolognaIT759 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR756 papers
- Rutherford Appleton LaboratoryGB754 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR746 papers
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10 papers · 2 filters
Discovery of Carbon Radio Recombination Lines in M82
Leah K. Morabito, J. B. R. Oonk, Francisco Salgado +30
Carbon radio recombination lines (RRLs) at low frequencies (<=500 MHz) trace the cold, diffuse phase of the interstellar medium, which is otherwise difficult to observe. We present…
LOFAR low-band antenna observations of the 3C295 and Bootes fields: source counts and ultra-steep spectrum sources
R. J. van Weeren, W. L. Williams, C. Tasse +98
We present LOFAR Low Band observations of the Bootes and 3C295 fields. Our images made at 34, 46, and 62 MHz reach noise levels of 12, 8, and 5 mJy beam, making them the dee…
Discovery of Dramatic Optical Variability in SDSS J1100+4421: A Peculiar Radio-Loud Narrow-Line Seyfert 1 Galaxy?
Masaomi Tanaka, Tomoki Morokuma, Ryosuke Itoh +55
We present our discovery of dramatic variability in SDSS J1100+4421 by the high-cadence transient survey Kiso Supernova Survey (KISS). The source brightened in the optical by at le…
The dust origin of the Broad Line Region and the model consequences for AGN unification scheme
Bozena Czerny, Justyna Modzelewska, Francesco Petrogalli +7
We propose a very simple physical mechanism responsible for the formation of the Low Ionization Line part of the Broad Line Region in Active Galactic Nuclei. It explains the scalin…
Multiwavelength study of the radio emission from a tight galaxy pair Arp 143
B. Nikiel-Wroczyński, M. Jamrozy, M. Soida +1
We present results of the recent low-frequency radio observations of a tight galaxy pair Arp 143 at 234 and 612 MHz. These data are analysed together with the archive data at 1490,…
The nature of the low-frequency emission of M51: First observations of a nearby galaxy with LOFAR
D. D. Mulcahy, A. Horneffer, R. Beck +25
The grand-design spiral galaxy M51 was observed with the LOFAR High Frequency Antennas (HBA) and imaged in total intensity and polarisation. This observation covered the frequencie…