Tentative Blazar Candidate EP240709A Associated with 4FGL J0031.5-5648: NICER and Archival Multiwavelength Observations
arXiv:2411.18718 · doi:10.3847/2515-5172/ad95ff
Abstract
We report on follow-up observations of the recently discovered transient by the Einstein Probe, EP240709A, with the Neutron star Interior Composition Explorer (NICER). We also incorporated archival multiwavelength survey data from the Neil Gehrels Swift Observatory (X-ray), Gaia (optical), the Fermi Gamma-ray Space Telescope (gamma-ray), and the Wide-field Infrared Survey Explorer (infrared) to distinguish between blazars and stellar systems. We suggest that EP240709A is likely an active blazar.
arXiv commentPublished in RNAAS
References in corpus (16)
- SciPy 1.0--Fundamental Algorithms for Scientific Computing in Python
- Astropy: A Community Python Package for Astronomy
- The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance
- Binary companions of evolved stars in APOGEE DR14: Search method and catalog of ~5,000 companions
- Optimal binning of X-ray spectra and response matrix design
- Fourier Techniques for Very Long Astrophysical Time Series Analysis
- The SRG/eROSITA all-sky survey: First X-ray catalogues and data release of the western Galactic hemisphere
- An Empirical Background Model for the NICER X-ray Timing Instrument
- Identification of the infrared non-thermal emission in Blazars
- The Einstein Probe Mission
- Gaia DR3: Apsis III -- Non-stellar content and source classification
- Two new catalogs of blazar candidates in the WISE infrared sky
- Transitional millisecond pulsars
- A real-time transient detector and the Living Swift-XRT Point Source catalogue
- X-Ray Variability of AGN and Relationship to Galactic Black Hole Binary Systems
- 4FGL J1844.4-0306: high-energy emission likely from the supernova remnant G29.37+0.1