SDSS-V Black Hole Mapper
@blackholemapper.bsky.social
Member of @sdsssurveys. Exploring quasars across the Universe. Continuing some of the work of @eBOSS… and much more!
Reposted by SDSS-V Black Hole Mapper
All @blackholemapper.bsky.social science programs are available here, www.sdss.org/dr19/bhm/pro..., and they include time domain programs such AQMES (All-Quasar Multi-Epoch Spectroscopy and reverberation mapping, X-ray follow-up programs.
July 11, 2025 at 10:03 AM
All @blackholemapper.bsky.social science programs are available here, www.sdss.org/dr19/bhm/pro..., and they include time domain programs such AQMES (All-Quasar Multi-Epoch Spectroscopy and reverberation mapping, X-ray follow-up programs.
Reposted by SDSS-V Black Hole Mapper
@blackholemapper.bsky.social had already released a few spectra in DR18, but they are going all out for DR19, with lots of galaxy and quasar spectra #DR19
July 11, 2025 at 10:02 AM
@blackholemapper.bsky.social had already released a few spectra in DR18, but they are going all out for DR19, with lots of galaxy and quasar spectra #DR19
Reposted by SDSS-V Black Hole Mapper
Black Hole Mapper also has a range of tutorials available to get you started working on the data: www.sdss.org/dr19/tutoria... #DR19
Tutorials - SDSS
Welcome to the SDSS tutorial section. This section contains a series of hands-on tutorials to learn how to work with different aspects of the SDSS data. If you are unsure what kind of SDSS data or whi...
www.sdss.org
July 11, 2025 at 10:03 AM
Black Hole Mapper also has a range of tutorials available to get you started working on the data: www.sdss.org/dr19/tutoria... #DR19
Reposted by SDSS-V Black Hole Mapper
Yesterday we released our nineteenth data release into the wild: www.sdss.org/dr19, let’s now take a closer look on what is in this data release. #DR19
July 11, 2025 at 9:35 AM
Yesterday we released our nineteenth data release into the wild: www.sdss.org/dr19, let’s now take a closer look on what is in this data release. #DR19
Reposted by SDSS-V Black Hole Mapper
First we have a tutorial around some basic themes relating to @blackholemapper.bsky.social . This introduces quasar spectra and redshift before moving in to time domain astronomy and looking at spectroscopic variability.
You can find it here www.sdss.org/dr19/tutoria... 2/4
You can find it here www.sdss.org/dr19/tutoria... 2/4
BHM In the Classroom - SDSS
This notebook aims to introduce some topics around quasar spectra, redshift and spectral variability. It is suitable for introductory level physics or astronomy majors at the tertiary level but could ...
www.sdss.org
July 11, 2025 at 1:09 PM
First we have a tutorial around some basic themes relating to @blackholemapper.bsky.social . This introduces quasar spectra and redshift before moving in to time domain astronomy and looking at spectroscopic variability.
You can find it here www.sdss.org/dr19/tutoria... 2/4
You can find it here www.sdss.org/dr19/tutoria... 2/4
SDSS-V Black Hole Mapper is releasing “The Sloan Digital Sky Survey DR19 quasar spectral property catalog” www.sdss.org/dr19/data_ac...
Value Added Catalogs - SDSS
In addition to the primary SDSS photometry and spectroscopy, there are a few extra catalogs created by our collaborators that are distributed through the SAS. These Value-Added Catalogs (VACs) are lis...
www.sdss.org
July 10, 2025 at 10:14 PM
SDSS-V Black Hole Mapper is releasing “The Sloan Digital Sky Survey DR19 quasar spectral property catalog” www.sdss.org/dr19/data_ac...
SDSS-V Black Hole Mapper is releasing the “Spectral Identification of eROSITA Sources DR19: Optical and X-ray properties” www.sdss.org/dr19/data_ac...
Value Added Catalogs - SDSS
In addition to the primary SDSS photometry and spectroscopy, there are a few extra catalogs created by our collaborators that are distributed through the SAS. These Value-Added Catalogs (VACs) are lis...
www.sdss.org
July 10, 2025 at 10:13 PM
SDSS-V Black Hole Mapper is releasing the “Spectral Identification of eROSITA Sources DR19: Optical and X-ray properties” www.sdss.org/dr19/data_ac...
We are releasing several new Jupyter Notebook style tutorials to help you use the new SDSS-V DR19 data: www.sdss.org/dr19/bhm/tut... github.com/sdss/dr19_tu...
BHM Tutorials - SDSS
The BHM survey focuses on the study of quasars and other AGN observed with the BOSS spectrograph. To support this science, the survey supplies a number of spectra and summary files that include parame...
www.sdss.org
July 10, 2025 at 10:13 PM
We are releasing several new Jupyter Notebook style tutorials to help you use the new SDSS-V DR19 data: www.sdss.org/dr19/bhm/tut... github.com/sdss/dr19_tu...
Reposted by SDSS-V Black Hole Mapper
We have a data release! Check out sdss.org/dr19 for all the data that just became publicly available with our 19th data release #DR19
Data Release 19 - SDSS
DR19 is the second data release for the fifth phase of the Sloan Digital Sky Survey (SDSS-V). Its content is described in detail on the DR19 data release paper. What's New in DR19 Data Access Scope DR...
sdss.org
July 10, 2025 at 10:11 PM
We have a data release! Check out sdss.org/dr19 for all the data that just became publicly available with our 19th data release #DR19
We are releasing a total of ~380,000 BOSS spectra in DR19 for ~120,000 distinct objects primarily targeted for spectroscopy by BHM, an order of magnitude expansion vs. DR18. www.sdss.org/dr19/bhm/dat... www.sdss.org/dr19/bhm/dat...
BHM Data - SDSS
Previous SDSS data most relevant to BHM Please also see earlier SDSS data releases, including DR16, DR17, and DR18 which e.g., include BHM relevant science and data, from other earlier SDSS programs a...
www.sdss.org
July 10, 2025 at 10:11 PM
We are releasing a total of ~380,000 BOSS spectra in DR19 for ~120,000 distinct objects primarily targeted for spectroscopy by BHM, an order of magnitude expansion vs. DR18. www.sdss.org/dr19/bhm/dat... www.sdss.org/dr19/bhm/dat...
Reposted by SDSS-V Black Hole Mapper
Today is a big day for us: it's DATA RELEASE DAY!!! And to celebrate our nineteenth data release, we have not one, but two papers for you to read all about our data: we have a DR19 paper (arxiv.org/abs/2507.07093) and an SDSS-V Overview paper (arxiv.org/abs/2507.06989) #DR19
Sloan Digital Sky Survey-V: Pioneering Panoptic Spectroscopy
The Sloan Digital Sky Survey-V (SDSS-V) is pioneering panoptic spectroscopy: it is the first all-sky, multi-epoch, optical-to-infrared spectroscopic survey. SDSS-V is mapping the sky with multi-object...
arxiv.org
July 10, 2025 at 9:08 AM
Today is a big day for us: it's DATA RELEASE DAY!!! And to celebrate our nineteenth data release, we have not one, but two papers for you to read all about our data: we have a DR19 paper (arxiv.org/abs/2507.07093) and an SDSS-V Overview paper (arxiv.org/abs/2507.06989) #DR19
This week's BHM science paper highlight is "The SDSS-V Black Hole Mapper Reverberation Mapping Project: A Kinematically Variable Broad-Line Region and Consequences for Masses of Luminous Quasars", by
@loganfries Fries et al. (2024). ui.adsabs.harvard.edu/abs/2024arXi...
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@loganfries Fries et al. (2024). ui.adsabs.harvard.edu/abs/2024arXi...
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The SDSS-V Black Hole Mapper Reverberation Mapping Project: A Kinematically Variable Broad-Line Region and Consequences for Masses of Luminous Quasars
We present a velocity-resolved reverberation mapping analysis of the hypervariable quasar RM160 (SDSS J141041.25+531849.0) at z = 0.359 with 153 spectroscopic epochs of data representing a ten-year ba...
ui.adsabs.harvard.edu
September 25, 2024 at 2:22 PM
This week's BHM science paper highlight is "The SDSS-V Black Hole Mapper Reverberation Mapping Project: A Kinematically Variable Broad-Line Region and Consequences for Masses of Luminous Quasars", by
@loganfries Fries et al. (2024). ui.adsabs.harvard.edu/abs/2024arXi...
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@loganfries Fries et al. (2024). ui.adsabs.harvard.edu/abs/2024arXi...
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This week's BHM paper highlight is "Exploring Changing-look Active Galactic Nuclei with the Sloan Digital Sky Survey V: First Year Results" by Zeltyn et al. (2024). The paper can be found here: arxiv.org/abs/2401.01933
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Exploring Changing-look Active Galactic Nuclei with the Sloan...
"Changing-look" active galactic nuclei (CL-AGNs) challenge our basic ideas about the physics of accretion flows and circumnuclear gas around supermassive black holes. Using first-year Sloan...
arxiv.org
August 14, 2024 at 6:57 PM
This week's BHM paper highlight is "Exploring Changing-look Active Galactic Nuclei with the Sloan Digital Sky Survey V: First Year Results" by Zeltyn et al. (2024). The paper can be found here: arxiv.org/abs/2401.01933
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This week's BHM paper highlight is "The SDSS-V Black Hole Mapper Reverberation Mapping Project: CIV BAL Acceleration in the Quasar SBS 1408+544" by Wheatley et al. (2024). The paper can be found here: arxiv.org/abs/2406.08622
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The SDSS-V Black Hole Mapper Reverberation Mapping Project: CIV...
We present the results of an investigation of a highly variable CIV broad absorption-line feature in the quasar SBS 1408+544 (z=2.337) that shows a significant shift in velocity over time. This...
arxiv.org
August 7, 2024 at 2:32 PM
This week's BHM paper highlight is "The SDSS-V Black Hole Mapper Reverberation Mapping Project: CIV BAL Acceleration in the Quasar SBS 1408+544" by Wheatley et al. (2024). The paper can be found here: arxiv.org/abs/2406.08622
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This week's BHM paper highlight is "The eROSITA Final Equatorial Depth Survey (eFEDS): The Hard X-ray Selected Sample" by K. Nandra et al (2024). The paper can be found here: ui.adsabs.harvard.edu/abs/2024arXi...
The eROSITA Final Equatorial Depth Survey (eFEDS): the hard X-ray selected sample
During its calibration and performance verification phase, the eROSITA instrument aboard the SRG satellite performed a uniform wide--area X-ray survey of approximately 140 deg$^{2}$ in a region of the...
ui.adsabs.harvard.edu
August 2, 2024 at 5:39 PM
This week's BHM paper highlight is "The eROSITA Final Equatorial Depth Survey (eFEDS): The Hard X-ray Selected Sample" by K. Nandra et al (2024). The paper can be found here: ui.adsabs.harvard.edu/abs/2024arXi...
After a bit of a hiatus, we are returning with more weekly-ish BHM Science Paper Highlights! This week's paper highlight is "Compact White Dwarf Binaries in the combined SRG/eROSITA/SDSS eFEDs Survey", by A. Schwope et al. (2024): arxiv.org/abs/2401.17304
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Compact white-dwarf binaries in the combined SRG/eROSITA/SDSS eFEDS survey
Aims. Compact white-dwarf binaries are selected from spectra obtained in the early SDSS-V plate program. A dedicated set of SDSS plate observations were carried out in the eFEDS field, providing...
arxiv.org
July 23, 2024 at 6:13 PM
After a bit of a hiatus, we are returning with more weekly-ish BHM Science Paper Highlights! This week's paper highlight is "Compact White Dwarf Binaries in the combined SRG/eROSITA/SDSS eFEDs Survey", by A. Schwope et al. (2024): arxiv.org/abs/2401.17304
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This week's BHM paper highlight is "The Cosmic Web of X-ray Active Galactic Nuclei seen through the eROSITA Final Equatorial Depth Survey (eFEDS)", by Johan Comparat et al. (2023). The paper can be found here: arxiv.org/abs/2301.01388
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The cosmic web of X-ray active galactic nuclei seen through the...
Which galaxies in the general population turn into active galactic nuclei (AGNs) is a keystone of galaxy formation and evolution. Thanks to SRG/eROSITA's contiguous 140 square degree pilot survey...
arxiv.org
November 28, 2023 at 6:17 PM
This week's BHM paper highlight is "The Cosmic Web of X-ray Active Galactic Nuclei seen through the eROSITA Final Equatorial Depth Survey (eFEDS)", by Johan Comparat et al. (2023). The paper can be found here: arxiv.org/abs/2301.01388
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This week's BHM science paper highlight is "The SDSS-V Black Hole Mapper Reverberation Mapping Project: Unusual Broad-Line Variability in a Luminous Quasar", by
@loganfries
Fries et al. (2023). The paper can be found here: arxiv.org/abs/2301.10252
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@loganfries
Fries et al. (2023). The paper can be found here: arxiv.org/abs/2301.10252
1/3
The SDSS-V Black Hole Mapper Reverberation Mapping Project:...
We present a high-cadence multi-epoch analysis of dramatic variability of three broad emission lines (MgII, H$β$, and H$α$) in the spectra of the luminous quasar ($λ...
arxiv.org
November 20, 2023 at 6:14 PM
This week's BHM science paper highlight is "The SDSS-V Black Hole Mapper Reverberation Mapping Project: Unusual Broad-Line Variability in a Luminous Quasar", by
@loganfries
Fries et al. (2023). The paper can be found here: arxiv.org/abs/2301.10252
1/3
@loganfries
Fries et al. (2023). The paper can be found here: arxiv.org/abs/2301.10252
1/3
This week's BHM paper highlight is "The eROSITA Final Equatorial Depth Survey (eFEDS): Complex Absorption and soft excesses in hard X-ray-selected Active Galactic Nuclei", by Waddell et al. (2023). The paper can be found here: arxiv.org/pdf/2306.009...
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arxiv.org
November 14, 2023 at 9:22 PM
This week's BHM paper highlight is "The eROSITA Final Equatorial Depth Survey (eFEDS): Complex Absorption and soft excesses in hard X-ray-selected Active Galactic Nuclei", by Waddell et al. (2023). The paper can be found here: arxiv.org/pdf/2306.009...
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Today is our first BHM Science Paper Day! The first science results to be published using BHM data were those of Zeltyn et al. (2022). This paper reports the discovery of a "changing-look quasar" using SDSS-V monitoring. The paper can be found here: arxiv.org/abs/2210.07258
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A Transient "Changing-look'' Active Galactic Nucleus...
We report the discovery of a new ``changing-look'' active galactic nucleus (CLAGN) event, in the quasar SDSS J162829.17+432948.5 at z=0.2603, identified through repeat spectroscopy from the fifth...
arxiv.org
November 7, 2023 at 4:47 PM
Today is our first BHM Science Paper Day! The first science results to be published using BHM data were those of Zeltyn et al. (2022). This paper reports the discovery of a "changing-look quasar" using SDSS-V monitoring. The paper can be found here: arxiv.org/abs/2210.07258
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Let’s start getting to know some of the science results that have come from the Black Hole Mapper program so far! For the next few months, we will have a weekly “BHM results” post, each featuring a science journal article that has been published using Black Hole Mapper data.
November 7, 2023 at 4:36 PM
Let’s start getting to know some of the science results that have come from the Black Hole Mapper program so far! For the next few months, we will have a weekly “BHM results” post, each featuring a science journal article that has been published using Black Hole Mapper data.
A few of our Black Hole Mapper team members are representing at the “Multi-wavelength AGN Structure and Cosmological Applications” conference in Nice! We’re learning about all things AGN and enjoying copious amounts of French pastries. Here we are at Observatoire de la Côte d’Azur!
October 12, 2023 at 1:51 PM
A few of our Black Hole Mapper team members are representing at the “Multi-wavelength AGN Structure and Cosmological Applications” conference in Nice! We’re learning about all things AGN and enjoying copious amounts of French pastries. Here we are at Observatoire de la Côte d’Azur!
Hello, BlueSky! We are the Black Hole Mapper, a part of the SDSS-V survey aimed at exploring quasars across the Universe. We’ve finally made it over here and are happy to join the astronomy community here!
October 12, 2023 at 1:14 PM
Hello, BlueSky! We are the Black Hole Mapper, a part of the SDSS-V survey aimed at exploring quasars across the Universe. We’ve finally made it over here and are happy to join the astronomy community here!
Reposted by SDSS-V Black Hole Mapper
Huge congratulations to the Local Volume Mapper team, who passed Operational Readiness Review today! Lots of commissioning data from the IFUs, but now ready to official embark on their mission. Here's to the 4 little 🔭's that can!
October 11, 2023 at 8:56 PM
Huge congratulations to the Local Volume Mapper team, who passed Operational Readiness Review today! Lots of commissioning data from the IFUs, but now ready to official embark on their mission. Here's to the 4 little 🔭's that can!