Probing the cold magnetised Universe with SPICA-POL (B-BOP)

André, Ph.; Hughes, Annie; Guillet, V.; Boulanger, F.; Bracco, A.; Ntormousi, Evangelia; Arzoumanian, D.; Maury, A.; Bernard, J.-P.; Bontemps, Sylvain; Ristorcelli, I.; Girart, J. M.; Motte, F.; Tassis, Konstantinos; Pantin, É.; Montmerle, T.; Johnstone, Doug; Gabici, S.; Efstathiou, A.; Basu, Shantanu; Béthermin, M.; Beuther, H.; Braine, J.; Francesco, James Di; Falgarone, É.; Ferrière, K.; Fletcher, Andrew; Galametz, M.; Giard, M.; Hennebelle, P.; Jones, A. P.; Kepley, Amanda A.; Kwon, Jungmi; Lagache, G.; Lesaffre, Pierre; Levrier, F.; Li, D.; Li, Z.-Y.; Mao, Sui Ann; Onaka, Takashi; Paladino, R.; Peretto, N.; Poglitsch, A.; Revéret, V.; Rodrı́guez, Luis F.; Sauvage, M.; Soler, J. D.; Spinoglio, L.; Tabatabaei, F. S.; Tritsis, Aris; Tak, F. F. S. van der; Ward-Thompson, Derek; Wiesemeyer, H.; Ysard, N.; Zhang, H.

doi:10.1017/pasa.2019.20

Cited by 20 publications

(12 citation statements)

References 361 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…HAWC+ on board SOFIA pioneers polarimetry of low column density gas around bright star-forming regions (e.g., Chuss et al 2019;Santos et al 2019). Extensive observations can be conducted by future space-borne facilities (e.g., André et al 2019;Leisawitz et al 2019).…”

Section: Discussionmentioning

confidence: 99%

The JCMT BISTRO Survey: Magnetic Fields Associated with a Network of Filaments in NGC 1333

Doi¹,

Hasegawa

Furuya

et al. 2020

ApJ

View full text Add to dashboard Cite

We present new observations of the active star formation region NGC 1333 in the Perseus molecular cloud complex from the James Clerk Maxwell Telescope B-Fields In Star-forming Region Observations (BISTRO) survey with the POL-2 instrument. The BISTRO data cover the entire NGC 1333 complex (∼1.5 pc×2 pc) at 0.02 pc resolution and spatially resolve the polarized emission from individual filamentary structures for the first time. The inferred magnetic field structure is complex as a whole, with each individual filament aligned at different position angles relative to the local field orientation. We combine the BISTRO data with low-and high-resolution data derived from Planck and interferometers to study the multiscale magnetic field structure in this region. The magnetic field morphology drastically changes below a scale of ∼1 pc and remains continuous from the scales of filaments (∼0.1 pc) to that of protostellar envelopes (∼0.005 pc or ∼1000 au). Finally, we construct simple models in which we assume that the magnetic field is always perpendicular to the long axis of the filaments. We demonstrate that the observed variation of the relative orientation between the filament axes and the magnetic field angles are well reproduced by this model, taking into account the projection effects of the magnetic field and filaments relative to the plane of the sky. These projection effects may explain the apparent complexity of the magnetic field structure observed at the resolution of BISTRO data toward the filament network.

show abstract

Section: Discussionmentioning

confidence: 99%

The JCMT BISTRO Survey: Magnetic Fields Associated with a Network of Filaments in NGC 1333

Doi¹,

Hasegawa

Furuya

et al. 2020

ApJ

View full text Add to dashboard Cite

show abstract

“…We will evaluate these functions at three representative wavelengths: 70, 200, and 350 μm. These correspond to the peak wavelengths for blackbody emission at 72.9, 25.5, and 14.6 K and are also the centers of the bands for the B-BOP polarimeter on board the proposed ESA/JAXA M5 mission SPICA (Roelfsema et al 2018;André et al 2019). We will only show the zenith angle range [0, π/2], since our results are symmetric with respect to the θ=π/2 axis.…”

Section: Polarized Dust Emissionmentioning

confidence: 63%

“…The polarization of detected radiation from astrophysical sources offers an additional window on some of the physical processes that happen in these sources (Matthews et al 2009;André et al 2019). A consistent polarization signature in the radiation scattered off spherical dust grains, e.g., contains information about the spatial origin of that radiation.…”

Section: Introductionmentioning

confidence: 99%

“…More recently, ALMA (Cortes et al 2016), the POL-2/SCUBA2 polarimeter on the JCMT (Pattle et al 2017), and the HAWC+ polarimeter on the SOFIA telescope (Santos et al 2019;Lopez-Rodriguez et al 2020) have started opening up a new level of magnetic field surveys by producing polarization maps for star-forming molecular clouds and external galaxies. Other polarimeters are being commissioned, e.g., the TolTEC instrument on the Large Millimeter Telescope (Bryan et al 2018), or are being proposed, e.g., the B-BOP polarimeter aboard the ESA/JAXA mission SPICA (Roelfsema et al 2018;André et al 2019).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

CosTuuM: Polarized Thermal Dust Emission by Magnetically Oriented Spheroidal Grains

Vandenbroucke

Baes

Camps

2020

View full text Add to dashboard Cite

We present the new open-source C++-based Python library COSTUUM that can be used to generate infrared absorption and emission coefficients for arbitrary mixtures of spheroidal dust grains that are (partially) aligned with a magnetic field. We outline the algorithms underlying the software, demonstrate the accuracy of our results using benchmarks from literature, and use our tool to investigate some commonly used approximative recipes. We find that the linear polarization fraction for a partially aligned dust grain mixture can be accurately represented by an appropriate linear combination of perfectly aligned grains and grains that are randomly oriented, but that the commonly used picket fence alignment breaks down for short wavelengths. We also find that for a fixed dust grain size, the absorption coefficients and linear polarization fraction for a realistic mixture of grains with various shapes cannot both be accurately represented by a single representative grain with a fixed shape, but that instead an average over an appropriate shape distribution should be used. Insufficient knowledge of an appropriate shape distribution is the main obstacle in obtaining accurate optical properties. COSTUUM is available as a standalone Python library and can be used to generate optical properties to be used in radiative transfer applications.

show abstract

“…It provides wide field 70 − 350 µm polarimetric images in Stokes Q and U of comparable quality (in terms of resolution, signal-to-noise ratio, and both intensity and spatial dynamic ranges) to Herschel images in Stokes I. More details about the B-BOP instrument are in Rodriguez et al (2018) and André et al (2019).…”

Section: B-bopmentioning

confidence: 99%

The role of SPICA-like missions and the Origins Space Telescope in the quest for heavily obscured AGN and synergies with Athena

Barchiesi

Pozzi

Vignali

et al. 2021

Publ. Astron. Soc. Aust.

Self Cite

View full text Add to dashboard Cite

In the black hole (BH)–galaxy co-evolution framework, most of the star formation (SF) and the BH accretion are expected to take place in highly obscured conditions. The large amount of gas and dust absorbs most of the UV-to-soft-X radiation and re-emits it at longer wavelengths, mostly in the IR. Thus, obscured active galactic nuclei (AGN) are very difficult to identify in optical or X-ray bands but shine bright in the IR. Moreover, X-ray background (XRB) synthesis models predict that a large fraction of the yet-unresolved XRB is due to the most obscured (Compton thick, CT: N $_{\text{H}}\ge 10^{24} \,\mathrm{cm}^{-2}$ ) of these AGN. In this work, we investigate the synergies between putative IR missions [using SPace Infrared telescope for Cosmology and Astrophysics (SPICA), proposed for European Space Agency (ESA)/M5 but withdrawn in 2020 October, and Origins Space Telescope, OST, as ‘templates’] and the X-ray mission Athena (Advanced Telescope for High ENergy Astrophysics), which should fly in early 2030s, in detecting and characterising AGN, with a particular focus on the most obscured ones. Using an XRB synthesis model, we estimated the number of AGN and the number of those which will be detected in the X-rays by Athena. For each AGN, we associated an optical-to-Far InfraRed (FIR) spectral energy distribution (SED) from observed AGN with both X-ray data and SED decomposition and used these SEDs to check if the AGN will be detected by SPICA-like or OST at IR wavelengths. We expect that, with the deepest Athena and SPICA-like (or OST) surveys, we will be able to photometrically detect in the IR more than 90% of all the AGN (down to $L_{2-10\text{keV}} \sim 10^{42}\,\mathrm{erg\ s}^{-1}$ and up to $z \sim 10$ ) predicted by XRB synthesis modeling, and we will detect at least half of them in the X-rays. The spectroscopic capabilities of the OST can provide ${\approx}51\,000$ and ${\approx}3\,400$ AGN spectra with $R= 300$ at 25–588 $\unicode[Times]{x03BC}$ m in the wide and deep surveys, respectively, the last one up to $z\approx 4$ . Athena will be extremely powerful in detecting and discerning moderate- and high-luminosity AGN, allowing us to properly select AGN even when the mid-IR torus emission is ‘hidden’ by the host galaxy contribution. We will constrain the intrinsic luminosity and the amount of obscuration for $\sim\!20\%$ of all the AGN (and $\sim\!50\%$ of those with $L_{2-10\text{keV}} > 3.2 \times 10^{43}\,\mathrm{erg\ s}^{-1}$ ) using the X-ray spectra provided by Athena WFI. We find that the most obscured and elusive CT-AGN will be exquisitely sampled by SPICA-like mission or OST and that Athena will allow a fine characterisation of the most luminous ones. This will provide a significant step forward in the process of placing stronger constraints on the yet-unresolved XRB and investigating the BH accretion rate evolution up to very high redshift ( $z \ge 4$ ).

show abstract

Probing the cold magnetised Universe with SPICA-POL (B-BOP)

Cited by 20 publications

References 361 publications

The JCMT BISTRO Survey: Magnetic Fields Associated with a Network of Filaments in NGC 1333

The JCMT BISTRO Survey: Magnetic Fields Associated with a Network of Filaments in NGC 1333

CosTuuM: Polarized Thermal Dust Emission by Magnetically Oriented Spheroidal Grains

The role of SPICA-like missions and the Origins Space Telescope in the quest for heavily obscured AGN and synergies with Athena

Contact Info

Product

Resources

About