News related to the BASS project

(updated on 19 April 2024)
(April 29th - May 1st, 2024)

BASS2024: New Horizons for Understanding Nearby AGN

BASS will be hosting a meeting at University of Maryland April 29-May 1. The purpose is to present the latest scientific results with the Swift-BAT AGN catalog, collaboratively explore critical new science projects for BASS, and, importantly, reconnect in person after a long time apart. Topics include new AGN surveys (BAT 157 month, DR3, etc), binary/dual AGN, and mm and radio emission, and AGN variability.

(26 July 2022)

The BASS DR2 has been released

The BASS DR2 has been released as an ApJ Special issue with 9 papers.
Link to ApJS Special Issue
This release provides 1449 optical and 233 near-IR spectra for the brightest 858 ultrahard X-ray (14–195 keV) selected AGN across the entire sky. This includes a highly complete set of key measurements (emission-line measurements and central velocity dispersions), with 99.9% of AGN with redshift measurements and 98% with black hole mass estimates (among unbeamed AGN outside the Galactic plane).

(21-23 July 2020)

Conference: Collaboration workshop for the BAT AGN Spectroscopic Survey

The next BASS Conference Collaboration was originally planned for July 20-24, 2020 in Washington, DC at University of Maryland.
Due to the ongoing COVID crisis, the BASS conference was held via Zoom from 21st to 23rd in July, 2020

(1 March 2019)

Conference: Collaboration workshop for the BAT AGN Spectroscopic Survey

A BASS workshop was held at the University of Florida (Gainesville, FL) from 3rd to 6th in February, 2019.

  • Time: 3 - 6 (Sun. - Wed.) Feb 2019
  • Venue: University of Florida, Gainesville, FL, USA
  • The detailed workshop program, and selected presentations, can be found in the following link.

(19 January 2018)

Conference: Local hard X-ray selected AGN across the multi-wavelength spectrum

The second BASS conference will be held in ESO (Santiago, Chile) from 12th to 16th in March 2018.

  • Time: 12 - 16 (Mon. - Fri.) March 2018
  • Venue: ESO, Santiago, Chile
More details of the conference including scientific rationale and registration are available here.

(28 September 2017)

BASS paper VII is published in Nature

The 7th BASS paper (Ricci et al. 2017) titled 'The close environments of accreting massive black holes are shaped by radiative feedback' is published in Nature.
The location and evolution of gas and dust that obscure central supermassive black hole have been one of the most actively studied topics in black hole astrophysics. In this recently published paper, Ricci et al. (2017) showed that the main physical mechanism regulating dust distribution in the vicinity of central supermassive black hole is radiation pressure.
See the full article from here (Nature).
Find out more press releases below:

(19 July 2017)

Special Session at the 231st AAS Winter Meeting

Special session for BASS project at the AAS Winter Meeting (231st) was successfully held.
With a title of 'New Results on Nearby AGN with Swift BAT', 9 invited talks and 3 invited posters were presented during 90 minutes of the special session.

  • Time: 2:00pm, 11th (Thursday) January 2018
  • Venue: Gaylord National Resort & Convention Center, Washington DC, USA
The detailed workshop program, and selected presentations, can be found in the following link.

(16 Feb 2016)

Conference: X-ray view of Black Hole Activity in the Local Universe

From 17 to 19 February 2016, the conference "X-ray View of Black Hole Activity in the Local Universe" takes place on the ETH Honggerberg campus.
More than 30 partcipants from all over the world meet in the HIT building (ETH Zurich) to present and discuss the latest results of space-based X-ray missions to observe nearby supermassive black-hole growth (such as NuSTAR, Swift and Maxi).
Discussions include current topics in the field as well as the question of what can be learned from future X-ray missions.

  • Time: 17 - 19 (Wed. - Fri.) February 2016
  • Venue: HIT E51, ETH Zurich, Switzerland

All talk materials (32 speakers) are available here.
See more detail about the conference here including photos.